diff options
Diffstat (limited to 'arch/i386')
93 files changed, 2813 insertions, 1235 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index dfd904f6883..6c02336fe2e 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -68,7 +68,6 @@ config X86_VOYAGER config X86_NUMAQ bool "NUMAQ (IBM/Sequent)" - select DISCONTIGMEM select NUMA help This option is used for getting Linux to run on a (IBM/Sequent) NUMA @@ -511,28 +510,7 @@ config SCHED_SMT cost of slightly increased overhead in some places. If unsure say N here. -config PREEMPT - bool "Preemptible Kernel" - help - This option reduces the latency of the kernel when reacting to - real-time or interactive events by allowing a low priority process to - be preempted even if it is in kernel mode executing a system call. - This allows applications to run more reliably even when the system is - under load. - - Say Y here if you are building a kernel for a desktop, embedded - or real-time system. Say N if you are unsure. - -config PREEMPT_BKL - bool "Preempt The Big Kernel Lock" - depends on PREEMPT - default y - help - This option reduces the latency of the kernel by making the - big kernel lock preemptible. - - Say Y here if you are building a kernel for a desktop system. - Say N if you are unsure. +source "kernel/Kconfig.preempt" config X86_UP_APIC bool "Local APIC support on uniprocessors" @@ -783,25 +761,48 @@ comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support" comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI" depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI) -config DISCONTIGMEM - bool - depends on NUMA - default y - config HAVE_ARCH_BOOTMEM_NODE bool depends on NUMA default y -config HAVE_MEMORY_PRESENT +config ARCH_HAVE_MEMORY_PRESENT bool depends on DISCONTIGMEM default y config NEED_NODE_MEMMAP_SIZE bool - depends on DISCONTIGMEM + depends on DISCONTIGMEM || SPARSEMEM + default y + +config HAVE_ARCH_ALLOC_REMAP + bool + depends on NUMA + default y + +config ARCH_DISCONTIGMEM_ENABLE + def_bool y + depends on NUMA + +config ARCH_DISCONTIGMEM_DEFAULT + def_bool y + depends on NUMA + +config ARCH_SPARSEMEM_ENABLE + def_bool y + depends on NUMA + +config ARCH_SELECT_MEMORY_MODEL + def_bool y + depends on ARCH_SPARSEMEM_ENABLE + +source "mm/Kconfig" + +config HAVE_ARCH_EARLY_PFN_TO_NID + bool default y + depends on NUMA config HIGHPTE bool "Allocate 3rd-level pagetables from highmem" @@ -939,6 +940,43 @@ config SECCOMP If unsure, say Y. Only embedded should say N here. +source kernel/Kconfig.hz + +config PHYSICAL_START + hex "Physical address where the kernel is loaded" if EMBEDDED + default "0x100000" + help + This gives the physical address where the kernel is loaded. + Primarily used in the case of kexec on panic where the + fail safe kernel needs to run at a different address than + the panic-ed kernel. + + Don't change this unless you know what you are doing. + +config KEXEC + bool "kexec system call (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + kexec is a system call that implements the ability to shutdown your + current kernel, and to start another kernel. It is like a reboot + but it is indepedent of the system firmware. And like a reboot + you can start any kernel with it, not just Linux. + + The name comes from the similiarity to the exec system call. + + It is an ongoing process to be certain the hardware in a machine + is properly shutdown, so do not be surprised if this code does not + initially work for you. It may help to enable device hotplugging + support. As of this writing the exact hardware interface is + strongly in flux, so no good recommendation can be made. + +config CRASH_DUMP + bool "kernel crash dumps (EXPERIMENTAL)" + depends on EMBEDDED + depends on EXPERIMENTAL + depends on HIGHMEM + help + Generate crash dump after being started by kexec. endmenu @@ -1226,6 +1264,15 @@ config SCx200 This support is also available as a module. If compiled as a module, it will be called scx200. +config HOTPLUG_CPU + bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" + depends on SMP && HOTPLUG && EXPERIMENTAL + ---help--- + Say Y here to experiment with turning CPUs off and on. CPUs + can be controlled through /sys/devices/system/cpu. + + Say N. + source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" diff --git a/arch/i386/Makefile b/arch/i386/Makefile index 1c36ca332a9..bf7c9ba709f 100644 --- a/arch/i386/Makefile +++ b/arch/i386/Makefile @@ -17,6 +17,13 @@ # 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net> # Added support for GEODE CPU +HAS_BIARCH := $(call cc-option-yn, -m32) +ifeq ($(HAS_BIARCH),y) +AS := $(AS) --32 +LD := $(LD) -m elf_i386 +CC := $(CC) -m32 +endif + LDFLAGS := -m elf_i386 OBJCOPYFLAGS := -O binary -R .note -R .comment -S LDFLAGS_vmlinux := diff --git a/arch/i386/boot/Makefile b/arch/i386/boot/Makefile index aa7064a75ee..1e71382d413 100644 --- a/arch/i386/boot/Makefile +++ b/arch/i386/boot/Makefile @@ -25,8 +25,8 @@ SVGA_MODE := -DSVGA_MODE=NORMAL_VGA #RAMDISK := -DRAMDISK=512 -targets := vmlinux.bin bootsect bootsect.o setup setup.o \ - zImage bzImage +targets := vmlinux.bin bootsect bootsect.o \ + setup setup.o zImage bzImage subdir- := compressed hostprogs-y := tools/build @@ -48,7 +48,7 @@ cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/bootsect $(obj)/setup \ $(obj)/zImage $(obj)/bzImage: $(obj)/bootsect $(obj)/setup \ $(obj)/vmlinux.bin $(obj)/tools/build FORCE $(call if_changed,image) - @echo 'Kernel: $@ is ready' + @echo 'Kernel: $@ is ready' ' (#'`cat .version`')' $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE $(call if_changed,objcopy) diff --git a/arch/i386/boot/compressed/head.S b/arch/i386/boot/compressed/head.S index c5e80b69e7d..b5893e4ecd3 100644 --- a/arch/i386/boot/compressed/head.S +++ b/arch/i386/boot/compressed/head.S @@ -25,6 +25,7 @@ #include <linux/linkage.h> #include <asm/segment.h> +#include <asm/page.h> .globl startup_32 @@ -74,7 +75,7 @@ startup_32: popl %esi # discard address popl %esi # real mode pointer xorl %ebx,%ebx - ljmp $(__BOOT_CS), $0x100000 + ljmp $(__BOOT_CS), $__PHYSICAL_START /* * We come here, if we were loaded high. @@ -99,7 +100,7 @@ startup_32: popl %ecx # lcount popl %edx # high_buffer_start popl %eax # hcount - movl $0x100000,%edi + movl $__PHYSICAL_START,%edi cli # make sure we don't get interrupted ljmp $(__BOOT_CS), $0x1000 # and jump to the move routine @@ -124,5 +125,5 @@ move_routine_start: movsl movl %ebx,%esi # Restore setup pointer xorl %ebx,%ebx - ljmp $(__BOOT_CS), $0x100000 + ljmp $(__BOOT_CS), $__PHYSICAL_START move_routine_end: diff --git a/arch/i386/boot/compressed/misc.c b/arch/i386/boot/compressed/misc.c index cedc55cc47d..82a807f9f5e 100644 --- a/arch/i386/boot/compressed/misc.c +++ b/arch/i386/boot/compressed/misc.c @@ -13,6 +13,7 @@ #include <linux/vmalloc.h> #include <linux/tty.h> #include <asm/io.h> +#include <asm/page.h> /* * gzip declarations @@ -308,7 +309,7 @@ static void setup_normal_output_buffer(void) #else if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory"); #endif - output_data = (char *)0x100000; /* Points to 1M */ + output_data = (char *)__PHYSICAL_START; /* Normally Points to 1M */ free_mem_end_ptr = (long)real_mode; } @@ -333,8 +334,8 @@ static void setup_output_buffer_if_we_run_high(struct moveparams *mv) low_buffer_size = low_buffer_end - LOW_BUFFER_START; high_loaded = 1; free_mem_end_ptr = (long)high_buffer_start; - if ( (0x100000 + low_buffer_size) > ((ulg)high_buffer_start)) { - high_buffer_start = (uch *)(0x100000 + low_buffer_size); + if ( (__PHYSICAL_START + low_buffer_size) > ((ulg)high_buffer_start)) { + high_buffer_start = (uch *)(__PHYSICAL_START + low_buffer_size); mv->hcount = 0; /* say: we need not to move high_buffer */ } else mv->hcount = -1; @@ -353,7 +354,6 @@ static void close_output_buffer_if_we_run_high(struct moveparams *mv) } } - asmlinkage int decompress_kernel(struct moveparams *mv, void *rmode) { real_mode = rmode; diff --git a/arch/i386/boot/edd.S b/arch/i386/boot/edd.S index 027d6b354ff..d8d69f2b911 100644 --- a/arch/i386/boot/edd.S +++ b/arch/i386/boot/edd.S @@ -6,7 +6,7 @@ * projects 1572D, 1484D, 1386D, 1226DT * disk signature read by Matt Domsch <Matt_Domsch@dell.com> * and Andrew Wilks <Andrew_Wilks@dell.com> September 2003, June 2004 - * legacy CHS retreival by Patrick J. LoPresti <patl@users.sourceforge.net> + * legacy CHS retrieval by Patrick J. LoPresti <patl@users.sourceforge.net> * March 2004 * Command line option parsing, Matt Domsch, November 2004 */ diff --git a/arch/i386/boot/install.sh b/arch/i386/boot/install.sh index 90f2452b3b9..f17b40dfc0f 100644 --- a/arch/i386/boot/install.sh +++ b/arch/i386/boot/install.sh @@ -21,8 +21,8 @@ # User may have a custom install script -if [ -x ~/bin/installkernel ]; then exec ~/bin/installkernel "$@"; fi -if [ -x /sbin/installkernel ]; then exec /sbin/installkernel "$@"; fi +if [ -x ~/bin/${CROSS_COMPILE}installkernel ]; then exec ~/bin/${CROSS_COMPILE}installkernel "$@"; fi +if [ -x /sbin/${CROSS_COMPILE}installkernel ]; then exec /sbin/${CROSS_COMPILE}installkernel "$@"; fi # Default install - same as make zlilo diff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S index caa1fde6904..8cb420f40c5 100644 --- a/arch/i386/boot/setup.S +++ b/arch/i386/boot/setup.S @@ -33,7 +33,7 @@ * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999. * <stiker@northlink.com> * - * Fix to work around buggy BIOSes which dont use carry bit correctly + * Fix to work around buggy BIOSes which don't use carry bit correctly * and/or report extended memory in CX/DX for e801h memory size detection * call. As a result the kernel got wrong figures. The int15/e801h docs * from Ralf Brown interrupt list seem to indicate AX/BX should be used @@ -357,7 +357,7 @@ bail820: meme801: stc # fix to work around buggy - xorw %cx,%cx # BIOSes which dont clear/set + xorw %cx,%cx # BIOSes which don't clear/set xorw %dx,%dx # carry on pass/error of # e801h memory size call # or merely pass cx,dx though @@ -847,7 +847,7 @@ flush_instr: # # but we yet haven't reloaded the CS register, so the default size # of the target offset still is 16 bit. -# However, using an operand prefix (0x66), the CPU will properly +# However, using an operand prefix (0x66), the CPU will properly # take our 48 bit far pointer. (INTeL 80386 Programmer's Reference # Manual, Mixing 16-bit and 32-bit code, page 16-6) diff --git a/arch/i386/boot/tools/build.c b/arch/i386/boot/tools/build.c index 26509b826ae..4a17956512e 100644 --- a/arch/i386/boot/tools/build.c +++ b/arch/i386/boot/tools/build.c @@ -1,6 +1,4 @@ /* - * $Id: build.c,v 1.5 1997/05/19 12:29:58 mj Exp $ - * * Copyright (C) 1991, 1992 Linus Torvalds * Copyright (C) 1997 Martin Mares */ @@ -8,7 +6,8 @@ /* * This file builds a disk-image from three different files: * - * - bootsect: exactly 512 bytes of 8086 machine code, loads the rest + * - bootsect: compatibility mbr which prints an error message if + * someone tries to boot the kernel directly. * - setup: 8086 machine code, sets up system parm * - system: 80386 code for actual system * diff --git a/arch/i386/crypto/aes.c b/arch/i386/crypto/aes.c index 1019430fc1f..88ee85c3b43 100644 --- a/arch/i386/crypto/aes.c +++ b/arch/i386/crypto/aes.c @@ -59,7 +59,7 @@ struct aes_ctx { }; #define WPOLY 0x011b -#define u32_in(x) le32_to_cpu(*(const u32 *)(x)) +#define u32_in(x) le32_to_cpup((const __le32 *)(x)) #define bytes2word(b0, b1, b2, b3) \ (((u32)(b3) << 24) | ((u32)(b2) << 16) | ((u32)(b1) << 8) | (b0)) diff --git a/arch/i386/defconfig b/arch/i386/defconfig index 28e62038379..ca07b95c06b 100644 --- a/arch/i386/defconfig +++ b/arch/i386/defconfig @@ -126,7 +126,6 @@ CONFIG_HAVE_DEC_LOCK=y # CONFIG_PM=y CONFIG_SOFTWARE_SUSPEND=y -# CONFIG_PM_DISK is not set # # ACPI (Advanced Configuration and Power Interface) Support diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile index 0fbcfe00dd8..4cc83b322b3 100644 --- a/arch/i386/kernel/Makefile +++ b/arch/i386/kernel/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_X86_MPPARSE) += mpparse.o obj-$(CONFIG_X86_LOCAL_APIC) += apic.o nmi.o obj-$(CONFIG_X86_IO_APIC) += io_apic.o obj-$(CONFIG_X86_REBOOTFIXUPS) += reboot_fixups.o +obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o crash.o obj-$(CONFIG_X86_NUMAQ) += numaq.o obj-$(CONFIG_X86_SUMMIT_NUMA) += summit.o obj-$(CONFIG_KPROBES) += kprobes.o @@ -43,7 +44,7 @@ obj-$(CONFIG_SCx200) += scx200.o # Note: kbuild does not track this dependency due to usage of .incbin $(obj)/vsyscall.o: $(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so targets += $(foreach F,int80 sysenter,vsyscall-$F.o vsyscall-$F.so) -targets += vsyscall.lds +targets += vsyscall-note.o vsyscall.lds # The DSO images are built using a special linker script. quiet_cmd_syscall = SYSCALL $@ diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c index 848bb97af7c..9f63ae0f404 100644 --- a/arch/i386/kernel/acpi/boot.c +++ b/arch/i386/kernel/acpi/boot.c @@ -29,6 +29,7 @@ #include <linux/efi.h> #include <linux/irq.h> #include <linux/module.h> +#include <linux/dmi.h> #include <asm/pgtable.h> #include <asm/io_apic.h> @@ -815,6 +816,219 @@ acpi_process_madt(void) return; } +extern int acpi_force; + +#ifdef __i386__ + +#ifdef CONFIG_ACPI_PCI +static int __init disable_acpi_irq(struct dmi_system_id *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", + d->ident); + acpi_noirq_set(); + } + return 0; +} + +static int __init disable_acpi_pci(struct dmi_system_id *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", + d->ident); + acpi_disable_pci(); + } + return 0; +} +#endif + +static int __init dmi_disable_acpi(struct dmi_system_id *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: acpi off\n",d->ident); + disable_acpi(); + } else { + printk(KERN_NOTICE + "Warning: DMI blacklist says broken, but acpi forced\n"); + } + return 0; +} + +/* + * Limit ACPI to CPU enumeration for HT + */ +static int __init force_acpi_ht(struct dmi_system_id *d) +{ + if (!acpi_force) { + printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", d->ident); + disable_acpi(); + acpi_ht = 1; + } else { + printk(KERN_NOTICE + "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); + } + return 0; +} + +/* + * If your system is blacklisted here, but you find that acpi=force + * works for you, please contact acpi-devel@sourceforge.net + */ +static struct dmi_system_id __initdata acpi_dmi_table[] = { + /* + * Boxes that need ACPI disabled + */ + { + .callback = dmi_disable_acpi, + .ident = "IBM Thinkpad", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), + DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), + }, + }, + + /* + * Boxes that need acpi=ht + */ + { + .callback = force_acpi_ht, + .ident = "FSC Primergy T850", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), + DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "DELL GX240", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"), + DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "HP VISUALIZE NT Workstation", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "Compaq Workstation W8000", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), + DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "ASUS P4B266", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "P4B266"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "ASUS P2B-DS", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "ASUS CUR-DLS", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "ABIT i440BX-W83977", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), + DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "IBM Bladecenter", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), + DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "IBM eServer xSeries 360", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), + DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "IBM eserver xSeries 330", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), + DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), + }, + }, + { + .callback = force_acpi_ht, + .ident = "IBM eserver xSeries 440", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), + DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), + }, + }, + +#ifdef CONFIG_ACPI_PCI + /* + * Boxes that need ACPI PCI IRQ routing disabled + */ + { + .callback = disable_acpi_irq, + .ident = "ASUS A7V", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), + DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), + /* newer BIOS, Revision 1011, does work */ + DMI_MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"), + }, + }, + + /* + * Boxes that need ACPI PCI IRQ routing and PCI scan disabled + */ + { /* _BBN 0 bug */ + .callback = disable_acpi_pci, + .ident = "ASUS PR-DLS", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), + DMI_MATCH(DMI_BIOS_VERSION, "ASUS PR-DLS ACPI BIOS Revision 1010"), + DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") + }, + }, + { + .callback = disable_acpi_pci, + .ident = "Acer TravelMate 36x Laptop", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), + }, + }, +#endif + { } +}; + +#endif /* __i386__ */ + /* * acpi_boot_table_init() and acpi_boot_init() * called from setup_arch(), always. @@ -843,6 +1057,10 @@ acpi_boot_table_init(void) { int error; +#ifdef __i386__ + dmi_check_system(acpi_dmi_table); +#endif + /* * If acpi_disabled, bail out * One exception: acpi=ht continues far enough to enumerate LAPICs @@ -870,8 +1088,6 @@ acpi_boot_table_init(void) */ error = acpi_blacklisted(); if (error) { - extern int acpi_force; - if (acpi_force) { printk(KERN_WARNING PREFIX "acpi=force override\n"); } else { diff --git a/arch/i386/kernel/acpi/sleep.c b/arch/i386/kernel/acpi/sleep.c index 28bb0514bb6..c1af93032ff 100644 --- a/arch/i386/kernel/acpi/sleep.c +++ b/arch/i386/kernel/acpi/sleep.c @@ -7,6 +7,7 @@ #include <linux/acpi.h> #include <linux/bootmem.h> +#include <linux/dmi.h> #include <asm/smp.h> #include <asm/tlbflush.h> @@ -91,3 +92,29 @@ static int __init acpi_sleep_setup(char *str) __setup("acpi_sleep=", acpi_sleep_setup); + + +static __init int reset_videomode_after_s3(struct dmi_system_id *d) +{ + acpi_video_flags |= 2; + return 0; +} + +static __initdata struct dmi_system_id acpisleep_dmi_table[] = { + { /* Reset video mode after returning from ACPI S3 sleep */ + .callback = reset_videomode_after_s3, + .ident = "Toshiba Satellite 4030cdt", + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), + }, + }, + { } +}; + +static int __init acpisleep_dmi_init(void) +{ + dmi_check_system(acpisleep_dmi_table); + return 0; +} + +core_initcall(acpisleep_dmi_init); diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c index d509836b70c..93df90bbb87 100644 --- a/arch/i386/kernel/apic.c +++ b/arch/i386/kernel/apic.c @@ -26,6 +26,7 @@ #include <linux/mc146818rtc.h> #include <linux/kernel_stat.h> #include <linux/sysdev.h> +#include <linux/cpu.h> #include <asm/atomic.h> #include <asm/smp.h> @@ -40,6 +41,11 @@ #include "io_ports.h" /* + * Knob to control our willingness to enable the local APIC. + */ +int enable_local_apic __initdata = 0; /* -1=force-disable, +1=force-enable */ + +/* * Debug level */ int apic_verbosity; @@ -205,7 +211,7 @@ void __init connect_bsp_APIC(void) enable_apic_mode(); } -void disconnect_bsp_APIC(void) +void disconnect_bsp_APIC(int virt_wire_setup) { if (pic_mode) { /* @@ -219,6 +225,42 @@ void disconnect_bsp_APIC(void) outb(0x70, 0x22); outb(0x00, 0x23); } + else { + /* Go back to Virtual Wire compatibility mode */ + unsigned long value; + + /* For the spurious interrupt use vector F, and enable it */ + value = apic_read(APIC_SPIV); + value &= ~APIC_VECTOR_MASK; + value |= APIC_SPIV_APIC_ENABLED; + value |= 0xf; + apic_write_around(APIC_SPIV, value); + + if (!virt_wire_setup) { + /* For LVT0 make it edge triggered, active high, external and enabled */ + value = apic_read(APIC_LVT0); + value &= ~(APIC_MODE_MASK | APIC_SEND_PENDING | + APIC_INPUT_POLARITY | APIC_LVT_REMOTE_IRR | + APIC_LVT_LEVEL_TRIGGER | APIC_LVT_MASKED ); + value |= APIC_LVT_REMOTE_IRR | APIC_SEND_PENDING; + value = SET_APIC_DELIVERY_MODE(value, APIC_MODE_EXTINT); + apic_write_around(APIC_LVT0, value); + } + else { + /* Disable LVT0 */ + apic_write_around(APIC_LVT0, APIC_LVT_MASKED); + } + + /* For LVT1 make it edge triggered, active high, nmi and enabled */ + value = apic_read(APIC_LVT1); + value &= ~( + APIC_MODE_MASK | APIC_SEND_PENDING | + APIC_INPUT_POLARITY | APIC_LVT_REMOTE_IRR | + APIC_LVT_LEVEL_TRIGGER | APIC_LVT_MASKED); + value |= APIC_LVT_REMOTE_IRR | APIC_SEND_PENDING; + value = SET_APIC_DELIVERY_MODE(value, APIC_MODE_NMI); + apic_write_around(APIC_LVT1, value); + } } void disable_local_APIC(void) @@ -363,7 +405,7 @@ void __init init_bsp_APIC(void) apic_write_around(APIC_LVT1, value); } -void __init setup_local_APIC (void) +void __devinit setup_local_APIC(void) { unsigned long oldvalue, value, ver, maxlvt; @@ -634,7 +676,7 @@ static struct sys_device device_lapic = { .cls = &lapic_sysclass, }; -static void __init apic_pm_activate(void) +static void __devinit apic_pm_activate(void) { apic_pm_state.active = 1; } @@ -665,26 +707,6 @@ static void apic_pm_activate(void) { } * Original code written by Keir Fraser. */ -/* - * Knob to control our willingness to enable the local APIC. - */ -int enable_local_apic __initdata = 0; /* -1=force-disable, +1=force-enable */ - -static int __init lapic_disable(char *str) -{ - enable_local_apic = -1; - clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); - return 0; -} -__setup("nolapic", lapic_disable); - -static int __init lapic_enable(char *str) -{ - enable_local_apic = 1; - return 0; -} -__setup("lapic", lapic_enable); - static int __init apic_set_verbosity(char *str) { if (strcmp("debug", str) == 0) @@ -855,7 +877,7 @@ fake_ioapic_page: * but we do not accept timer interrupts yet. We only allow the BP * to calibrate. */ -static unsigned int __init get_8254_timer_count(void) +static unsigned int __devinit get_8254_timer_count(void) { extern spinlock_t i8253_lock; unsigned long flags; @@ -874,7 +896,7 @@ static unsigned int __init get_8254_timer_count(void) } /* next tick in 8254 can be caught by catching timer wraparound */ -static void __init wait_8254_wraparound(void) +static void __devinit wait_8254_wraparound(void) { unsigned int curr_count, prev_count; @@ -894,7 +916,7 @@ static void __init wait_8254_wraparound(void) * Default initialization for 8254 timers. If we use other timers like HPET, * we override this later */ -void (*wait_timer_tick)(void) __initdata = wait_8254_wraparound; +void (*wait_timer_tick)(void) __devinitdata = wait_8254_wraparound; /* * This function sets up the local APIC timer, with a timeout of @@ -930,7 +952,7 @@ static void __setup_APIC_LVTT(unsigned int clocks) apic_write_around(APIC_TMICT, clocks/APIC_DIVISOR); } -static void __init setup_APIC_timer(unsigned int clocks) +static void __devinit setup_APIC_timer(unsigned int clocks) { unsigned long flags; @@ -1043,12 +1065,12 @@ void __init setup_boot_APIC_clock(void) local_irq_enable(); } -void __init setup_secondary_APIC_clock(void) +void __devinit setup_secondary_APIC_clock(void) { setup_APIC_timer(calibration_result); } -void __init disable_APIC_timer(void) +void __devinit disable_APIC_timer(void) { if (using_apic_timer) { unsigned long v; @@ -1133,7 +1155,7 @@ inline void smp_local_timer_interrupt(struct pt_regs * regs) } #ifdef CONFIG_SMP - update_process_times(user_mode(regs)); + update_process_times(user_mode_vm(regs)); #endif } diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c index 45641a87255..d48ce929096 100644 --- a/arch/i386/kernel/apm.c +++ b/arch/i386/kernel/apm.c @@ -346,10 +346,10 @@ extern int (*console_blank_hook)(int); struct apm_user { int magic; struct apm_user * next; - int suser: 1; - int writer: 1; - int reader: 1; - int suspend_wait: 1; + unsigned int suser: 1; + unsigned int writer: 1; + unsigned int reader: 1; + unsigned int suspend_wait: 1; int suspend_result; int suspends_pending; int standbys_pending; @@ -1222,6 +1222,7 @@ static int suspend(int vetoable) save_processor_state(); err = set_system_power_state(APM_STATE_SUSPEND); + ignore_normal_resume = 1; restore_processor_state(); local_irq_disable(); @@ -1229,7 +1230,6 @@ static int suspend(int vetoable) spin_lock(&i8253_lock); reinit_timer(); set_time(); - ignore_normal_resume = 1; spin_unlock(&i8253_lock); write_sequnlock(&xtime_lock); diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index d199e525680..2203a9d2021 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -24,9 +24,9 @@ EXPORT_PER_CPU_SYMBOL(cpu_gdt_table); DEFINE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]); EXPORT_PER_CPU_SYMBOL(cpu_16bit_stack); -static int cachesize_override __initdata = -1; -static int disable_x86_fxsr __initdata = 0; -static int disable_x86_serial_nr __initdata = 1; +static int cachesize_override __devinitdata = -1; +static int disable_x86_fxsr __devinitdata = 0; +static int disable_x86_serial_nr __devinitdata = 1; struct cpu_dev * cpu_devs[X86_VENDOR_NUM] = {}; @@ -59,7 +59,7 @@ static int __init cachesize_setup(char *str) } __setup("cachesize=", cachesize_setup); -int __init get_model_name(struct cpuinfo_x86 *c) +int __devinit get_model_name(struct cpuinfo_x86 *c) { unsigned int *v; char *p, *q; @@ -89,7 +89,7 @@ int __init get_model_name(struct cpuinfo_x86 *c) } -void __init display_cacheinfo(struct cpuinfo_x86 *c) +void __devinit display_cacheinfo(struct cpuinfo_x86 *c) { unsigned int n, dummy, ecx, edx, l2size; @@ -130,7 +130,7 @@ void __init display_cacheinfo(struct cpuinfo_x86 *c) /* in particular, if CPUID levels 0x80000002..4 are supported, this isn't used */ /* Look up CPU names by table lookup. */ -static char __init *table_lookup_model(struct cpuinfo_x86 *c) +static char __devinit *table_lookup_model(struct cpuinfo_x86 *c) { struct cpu_model_info *info; @@ -151,7 +151,7 @@ static char __init *table_lookup_model(struct cpuinfo_x86 *c) } -void __init get_cpu_vendor(struct cpuinfo_x86 *c, int early) +void __devinit get_cpu_vendor(struct cpuinfo_x86 *c, int early) { char *v = c->x86_vendor_id; int i; @@ -202,7 +202,7 @@ static inline int flag_is_changeable_p(u32 flag) /* Probe for the CPUID instruction */ -static int __init have_cpuid_p(void) +static int __devinit have_cpuid_p(void) { return flag_is_changeable_p(X86_EFLAGS_ID); } @@ -249,7 +249,7 @@ static void __init early_cpu_detect(void) #endif } -void __init generic_identify(struct cpuinfo_x86 * c) +void __devinit generic_identify(struct cpuinfo_x86 * c) { u32 tfms, xlvl; int junk; @@ -296,7 +296,7 @@ void __init generic_identify(struct cpuinfo_x86 * c) } } -static void __init squash_the_stupid_serial_number(struct cpuinfo_x86 *c) +static void __devinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c) { if (cpu_has(c, X86_FEATURE_PN) && disable_x86_serial_nr ) { /* Disable processor serial number */ @@ -324,7 +324,7 @@ __setup("serialnumber", x86_serial_nr_setup); /* * This does the hard work of actually picking apart the CPU stuff... */ -void __init identify_cpu(struct cpuinfo_x86 *c) +void __devinit identify_cpu(struct cpuinfo_x86 *c) { int i; @@ -432,10 +432,13 @@ void __init identify_cpu(struct cpuinfo_x86 *c) #ifdef CONFIG_X86_MCE mcheck_init(c); #endif + if (c == &boot_cpu_data) + sysenter_setup(); + enable_sep_cpu(); } #ifdef CONFIG_X86_HT -void __init detect_ht(struct cpuinfo_x86 *c) +void __devinit detect_ht(struct cpuinfo_x86 *c) { u32 eax, ebx, ecx, edx; int index_msb, tmp; @@ -490,7 +493,7 @@ void __init detect_ht(struct cpuinfo_x86 *c) } #endif -void __init print_cpu_info(struct cpuinfo_x86 *c) +void __devinit print_cpu_info(struct cpuinfo_x86 *c) { char *vendor = NULL; @@ -513,7 +516,7 @@ void __init print_cpu_info(struct cpuinfo_x86 *c) printk("\n"); } -cpumask_t cpu_initialized __initdata = CPU_MASK_NONE; +cpumask_t cpu_initialized __devinitdata = CPU_MASK_NONE; /* This is hacky. :) * We're emulating future behavior. @@ -560,7 +563,7 @@ void __init early_cpu_init(void) * and IDT. We reload them nevertheless, this function acts as a * 'CPU state barrier', nothing should get across. */ -void __init cpu_init (void) +void __devinit cpu_init(void) { int cpu = smp_processor_id(); struct tss_struct * t = &per_cpu(init_tss, cpu); @@ -635,7 +638,7 @@ void __init cpu_init (void) /* Clear all 6 debug registers: */ -#define CD(register) __asm__("movl %0,%%db" #register ::"r"(0) ); +#define CD(register) set_debugreg(0, register) CD(0); CD(1); CD(2); CD(3); /* no db4 and db5 */; CD(6); CD(7); @@ -648,3 +651,15 @@ void __init cpu_init (void) clear_used_math(); mxcsr_feature_mask_init(); } + +#ifdef CONFIG_HOTPLUG_CPU +void __devinit cpu_uninit(void) +{ + int cpu = raw_smp_processor_id(); + cpu_clear(cpu, cpu_initialized); + + /* lazy TLB state */ + per_cpu(cpu_tlbstate, cpu).state = 0; + per_cpu(cpu_tlbstate, cpu).active_mm = &init_mm; +} +#endif diff --git a/arch/i386/kernel/cpu/cpufreq/Kconfig b/arch/i386/kernel/cpu/cpufreq/Kconfig index f25ffd74235..0f1eb507233 100644 --- a/arch/i386/kernel/cpu/cpufreq/Kconfig +++ b/arch/i386/kernel/cpu/cpufreq/Kconfig @@ -23,7 +23,7 @@ config X86_ACPI_CPUFREQ If in doubt, say N. config ELAN_CPUFREQ - tristate "AMD Elan" + tristate "AMD Elan SC400 and SC410" select CPU_FREQ_TABLE depends on X86_ELAN ---help--- @@ -38,6 +38,18 @@ config ELAN_CPUFREQ If in doubt, say N. +config SC520_CPUFREQ + tristate "AMD Elan SC520" + select CPU_FREQ_TABLE + depends on X86_ELAN + ---help--- + This adds the CPUFreq driver for AMD Elan SC520 processor. + + For details, take a look at <file:Documentation/cpu-freq/>. + + If in doubt, say N. + + config X86_POWERNOW_K6 tristate "AMD Mobile K6-2/K6-3 PowerNow!" select CPU_FREQ_TABLE diff --git a/arch/i386/kernel/cpu/cpufreq/Makefile b/arch/i386/kernel/cpu/cpufreq/Makefile index a922e97aeed..2e894f1c891 100644 --- a/arch/i386/kernel/cpu/cpufreq/Makefile +++ b/arch/i386/kernel/cpu/cpufreq/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_X86_POWERNOW_K7) += powernow-k7.o obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o obj-$(CONFIG_X86_LONGHAUL) += longhaul.o obj-$(CONFIG_ELAN_CPUFREQ) += elanfreq.o +obj-$(CONFIG_SC520_CPUFREQ) += sc520_freq.o obj-$(CONFIG_X86_LONGRUN) += longrun.o obj-$(CONFIG_X86_GX_SUSPMOD) += gx-suspmod.o obj-$(CONFIG_X86_SPEEDSTEP_ICH) += speedstep-ich.o diff --git a/arch/i386/kernel/cpu/cpufreq/longhaul.c b/arch/i386/kernel/cpu/cpufreq/longhaul.c index ab0f9f5aac1..04e3563da4f 100644 --- a/arch/i386/kernel/cpu/cpufreq/longhaul.c +++ b/arch/i386/kernel/cpu/cpufreq/longhaul.c @@ -29,6 +29,7 @@ #include <linux/cpufreq.h> #include <linux/slab.h> #include <linux/string.h> +#include <linux/pci.h> #include <asm/msr.h> #include <asm/timex.h> @@ -119,7 +120,13 @@ static int longhaul_get_cpu_mult(void) static void do_powersaver(union msr_longhaul *longhaul, unsigned int clock_ratio_index) { + struct pci_dev *dev; + unsigned long flags; + unsigned int tmp_mask; int version; + int i; + u16 pci_cmd; + u16 cmd_state[64]; switch (cpu_model) { case CPU_EZRA_T: @@ -137,17 +144,58 @@ static void do_powersaver(union msr_longhaul *longhaul, longhaul->bits.SoftBusRatio4 = (clock_ratio_index & 0x10) >> 4; longhaul->bits.EnableSoftBusRatio = 1; longhaul->bits.RevisionKey = 0; - local_irq_disable(); - wrmsrl(MSR_VIA_LONGHAUL, longhaul->val); + + preempt_disable(); + local_irq_save(flags); + + /* + * get current pci bus master state for all devices + * and clear bus master bit + */ + dev = NULL; + i = 0; + do { + dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); + if (dev != NULL) { + pci_read_config_word(dev, PCI_COMMAND, &pci_cmd); + cmd_state[i++] = pci_cmd; + pci_cmd &= ~PCI_COMMAND_MASTER; + pci_write_config_word(dev, PCI_COMMAND, pci_cmd); + } + } while (dev != NULL); + + tmp_mask=inb(0x21); /* works on C3. save mask. */ + outb(0xFE,0x21); /* TMR0 only */ + outb(0xFF,0x80); /* delay */ + local_irq_enable(); + + __hlt(); + wrmsrl(MSR_VIA_LONGHAUL, longhaul->val); __hlt(); + local_irq_disable(); + + outb(tmp_mask,0x21); /* restore mask */ + + /* restore pci bus master state for all devices */ + dev = NULL; + i = 0; + do { + dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); + if (dev != NULL) { + pci_cmd = cmd_state[i++]; + pci_write_config_byte(dev, PCI_COMMAND, pci_cmd); + } + } while (dev != NULL); + local_irq_restore(flags); + preempt_enable(); + + /* disable bus ratio bit */ rdmsrl(MSR_VIA_LONGHAUL, longhaul->val); longhaul->bits.EnableSoftBusRatio = 0; longhaul->bits.RevisionKey = version; - local_irq_disable(); wrmsrl(MSR_VIA_LONGHAUL, longhaul->val); - local_irq_enable(); } /** @@ -578,7 +626,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy) longhaul_setup_voltagescaling(); policy->governor = CPUFREQ_DEFAULT_GOVERNOR; - policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; + policy->cpuinfo.transition_latency = 200000; /* nsec */ policy->cur = calc_speed(longhaul_get_cpu_mult()); ret = cpufreq_frequency_table_cpuinfo(policy, longhaul_table); diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c index 913f652623d..73a5dc5b26b 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c @@ -23,6 +23,7 @@ #include <linux/dmi.h> #include <asm/msr.h> +#include <asm/timer.h> #include <asm/timex.h> #include <asm/io.h> #include <asm/system.h> @@ -586,13 +587,17 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy) rdmsrl (MSR_K7_FID_VID_STATUS, fidvidstatus.val); - /* A K7 with powernow technology is set to max frequency by BIOS */ - fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.MFID]; + /* recalibrate cpu_khz */ + result = recalibrate_cpu_khz(); + if (result) + return result; + + fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.CFID]; if (!fsb) { printk(KERN_WARNING PFX "can not determine bus frequency\n"); return -EINVAL; } - dprintk("FSB: %3d.%03d MHz\n", fsb/1000, fsb%1000); + dprintk("FSB: %3dMHz\n", fsb/1000); if (dmi_check_system(powernow_dmi_table) || acpi_force) { printk (KERN_INFO PFX "PSB/PST known to be broken. Trying ACPI instead\n"); @@ -643,9 +648,7 @@ static int powernow_cpu_exit (struct cpufreq_policy *policy) { } #endif - if (powernow_table) - kfree(powernow_table); - + kfree(powernow_table); return 0; } diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c index a65ff7e32e5..10cc096c0ad 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c @@ -4,7 +4,7 @@ * GNU general public license version 2. See "COPYING" or * http://www.gnu.org/licenses/gpl.html * - * Support : paul.devriendt@amd.com + * Support : mark.langsdorf@amd.com * * Based on the powernow-k7.c module written by Dave Jones. * (C) 2003 Dave Jones <davej@codemonkey.org.uk> on behalf of SuSE Labs @@ -15,12 +15,13 @@ * * Valuable input gratefully received from Dave Jones, Pavel Machek, * Dominik Brodowski, and others. + * Originally developed by Paul Devriendt. * Processor information obtained from Chapter 9 (Power and Thermal Management) * of the "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD * Opteron Processors" available for download from www.amd.com * * Tables for specific CPUs can be infrerred from - * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf + * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf */ #include <linux/kernel.h> @@ -30,6 +31,7 @@ #include <linux/cpufreq.h> #include <linux/slab.h> #include <linux/string.h> +#include <linux/cpumask.h> #include <asm/msr.h> #include <asm/io.h> @@ -42,7 +44,7 @@ #define PFX "powernow-k8: " #define BFX PFX "BIOS error: " -#define VERSION "version 1.00.09e" +#define VERSION "version 1.40.2" #include "powernow-k8.h" /* serialize freq changes */ @@ -50,6 +52,10 @@ static DECLARE_MUTEX(fidvid_sem); static struct powernow_k8_data *powernow_data[NR_CPUS]; +#ifndef CONFIG_SMP +static cpumask_t cpu_core_map[1]; +#endif + /* Return a frequency in MHz, given an input fid */ static u32 find_freq_from_fid(u32 fid) { @@ -274,11 +280,18 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid { u32 rvosteps = data->rvo; u32 savefid = data->currfid; + u32 maxvid, lo; dprintk("ph1 (cpu%d): start, currfid 0x%x, currvid 0x%x, reqvid 0x%x, rvo 0x%x\n", smp_processor_id(), data->currfid, data->currvid, reqvid, data->rvo); + rdmsr(MSR_FIDVID_STATUS, lo, maxvid); + maxvid = 0x1f & (maxvid >> 16); + dprintk("ph1 maxvid=0x%x\n", maxvid); + if (reqvid < maxvid) /* lower numbers are higher voltages */ + reqvid = maxvid; + while (data->currvid > reqvid) { dprintk("ph1: curr 0x%x, req vid 0x%x\n", data->currvid, reqvid); @@ -286,8 +299,8 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid return 1; } - while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) { - if (data->currvid == 0) { + while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) { + if (data->currvid == maxvid) { rvosteps = 0; } else { dprintk("ph1: changing vid for rvo, req 0x%x\n", @@ -671,7 +684,7 @@ static int find_psb_table(struct powernow_k8_data *data) * BIOS and Kernel Developer's Guide, which is available on * www.amd.com */ - printk(KERN_ERR PFX "BIOS error - no PSB\n"); + printk(KERN_INFO PFX "BIOS error - no PSB or ACPI _PSS objects\n"); return -ENODEV; } @@ -695,7 +708,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) struct cpufreq_frequency_table *powernow_table; if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) { - dprintk("register performance failed\n"); + dprintk("register performance failed: bad ACPI data\n"); return -EIO; } @@ -746,22 +759,23 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) continue; } - if (fid < HI_FID_TABLE_BOTTOM) { - if (cntlofreq) { - /* if both entries are the same, ignore this - * one... - */ - if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) || - (powernow_table[i].index != powernow_table[cntlofreq].index)) { - printk(KERN_ERR PFX "Too many lo freq table entries\n"); - goto err_out_mem; - } - - dprintk("double low frequency table entry, ignoring it.\n"); - powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID; - continue; - } else - cntlofreq = i; + /* verify only 1 entry from the lo frequency table */ + if (fid < HI_FID_TABLE_BOTTOM) { + if (cntlofreq) { + /* if both entries are the same, ignore this + * one... + */ + if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) || + (powernow_table[i].index != powernow_table[cntlofreq].index)) { + printk(KERN_ERR PFX "Too many lo freq table entries\n"); + goto err_out_mem; + } + + dprintk("double low frequency table entry, ignoring it.\n"); + powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID; + continue; + } else + cntlofreq = i; } if (powernow_table[i].frequency != (data->acpi_data.states[i].core_frequency * 1000)) { @@ -816,7 +830,7 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde { u32 fid; u32 vid; - int res; + int res, i; struct cpufreq_freqs freqs; dprintk("cpu %d transition to index %u\n", smp_processor_id(), index); @@ -841,7 +855,8 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde } if ((fid < HI_FID_TABLE_BOTTOM) && (data->currfid < HI_FID_TABLE_BOTTOM)) { - printk("ignoring illegal change in lo freq table-%x to 0x%x\n", + printk(KERN_ERR PFX + "ignoring illegal change in lo freq table-%x to 0x%x\n", data->currfid, fid); return 1; } @@ -850,18 +865,20 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde smp_processor_id(), fid, vid); freqs.cpu = data->cpu; - freqs.old = find_khz_freq_from_fid(data->currfid); freqs.new = find_khz_freq_from_fid(fid); - cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + for_each_cpu_mask(i, cpu_core_map[data->cpu]) { + freqs.cpu = i; + cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + } - down(&fidvid_sem); res = transition_fid_vid(data, fid, vid); - up(&fidvid_sem); freqs.new = find_khz_freq_from_fid(data->currfid); - cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); - + for_each_cpu_mask(i, cpu_core_map[data->cpu]) { + freqs.cpu = i; + cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); + } return res; } @@ -874,6 +891,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi u32 checkvid = data->currvid; unsigned int newstate; int ret = -EIO; + int i; /* only run on specific CPU from here on */ oldmask = current->cpus_allowed; @@ -902,22 +920,41 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi data->currfid, data->currvid); if ((checkvid != data->currvid) || (checkfid != data->currfid)) { - printk(KERN_ERR PFX - "error - out of sync, fid 0x%x 0x%x, vid 0x%x 0x%x\n", - checkfid, data->currfid, checkvid, data->currvid); + printk(KERN_INFO PFX + "error - out of sync, fix 0x%x 0x%x, vid 0x%x 0x%x\n", + checkfid, data->currfid, checkvid, data->currvid); } if (cpufreq_frequency_table_target(pol, data->powernow_table, targfreq, relation, &newstate)) goto err_out; + down(&fidvid_sem); + + for_each_cpu_mask(i, cpu_core_map[pol->cpu]) { + /* make sure the sibling is initialized */ + if (!powernow_data[i]) { + ret = 0; + up(&fidvid_sem); + goto err_out; + } + } + powernow_k8_acpi_pst_values(data, newstate); if (transition_frequency(data, newstate)) { printk(KERN_ERR PFX "transition frequency failed\n"); ret = 1; + up(&fidvid_sem); goto err_out; } + /* Update all the fid/vids of our siblings */ + for_each_cpu_mask(i, cpu_core_map[pol->cpu]) { + powernow_data[i]->currvid = data->currvid; + powernow_data[i]->currfid = data->currfid; + } + up(&fidvid_sem); + pol->cur = find_khz_freq_from_fid(data->currfid); ret = 0; @@ -962,7 +999,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol) */ if ((num_online_cpus() != 1) || (num_possible_cpus() != 1)) { - printk(KERN_INFO PFX "MP systems not supported by PSB BIOS structure\n"); + printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n"); kfree(data); return -ENODEV; } @@ -1003,6 +1040,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol) schedule(); pol->governor = CPUFREQ_DEFAULT_GOVERNOR; + pol->cpus = cpu_core_map[pol->cpu]; /* Take a crude guess here. * That guess was in microseconds, so multiply with 1000 */ @@ -1069,7 +1107,7 @@ static unsigned int powernowk8_get (unsigned int cpu) return 0; } preempt_disable(); - + if (query_current_values_with_pending_wait(data)) goto out; @@ -1127,9 +1165,10 @@ static void __exit powernowk8_exit(void) cpufreq_unregister_driver(&cpufreq_amd64_driver); } -MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com>"); +MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com."); MODULE_DESCRIPTION("AMD Athlon 64 and Opteron processor frequency driver."); MODULE_LICENSE("GPL"); late_initcall(powernowk8_init); module_exit(powernowk8_exit); + diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h index 63ebc8470f5..9ed5bf221cb 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h @@ -174,3 +174,18 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, u32 reqvi static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid); static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index); + +#ifndef for_each_cpu_mask +#define for_each_cpu_mask(i,mask) for (i=0;i<1;i++) +#endif + +#ifdef CONFIG_SMP +static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[]) +{ +} +#else +static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[]) +{ + cpu_set(0, cpu_sharedcore_mask[0]); +} +#endif diff --git a/arch/i386/kernel/cpu/cpufreq/sc520_freq.c b/arch/i386/kernel/cpu/cpufreq/sc520_freq.c new file mode 100644 index 00000000000..ef457d50f4a --- /dev/null +++ b/arch/i386/kernel/cpu/cpufreq/sc520_freq.c @@ -0,0 +1,186 @@ +/* + * sc520_freq.c: cpufreq driver for the AMD Elan sc520 + * + * Copyright (C) 2005 Sean Young <sean@mess.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Based on elanfreq.c + * + * 2005-03-30: - initial revision + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> + +#include <linux/delay.h> +#include <linux/cpufreq.h> + +#include <asm/msr.h> +#include <asm/timex.h> +#include <asm/io.h> + +#define MMCR_BASE 0xfffef000 /* The default base address */ +#define OFFS_CPUCTL 0x2 /* CPU Control Register */ + +static __u8 __iomem *cpuctl; + +#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "sc520_freq", msg) + +static struct cpufreq_frequency_table sc520_freq_table[] = { + {0x01, 100000}, + {0x02, 133000}, + {0, CPUFREQ_TABLE_END}, +}; + +static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu) +{ + u8 clockspeed_reg = *cpuctl; + + switch (clockspeed_reg & 0x03) { + default: + printk(KERN_ERR "sc520_freq: error: cpuctl register has unexpected value %02x\n", clockspeed_reg); + case 0x01: + return 100000; + case 0x02: + return 133000; + } +} + +static void sc520_freq_set_cpu_state (unsigned int state) +{ + + struct cpufreq_freqs freqs; + u8 clockspeed_reg; + + freqs.old = sc520_freq_get_cpu_frequency(0); + freqs.new = sc520_freq_table[state].frequency; + freqs.cpu = 0; /* AMD Elan is UP */ + + cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + + dprintk("attempting to set frequency to %i kHz\n", + sc520_freq_table[state].frequency); + + local_irq_disable(); + + clockspeed_reg = *cpuctl & ~0x03; + *cpuctl = clockspeed_reg | sc520_freq_table[state].index; + + local_irq_enable(); + + cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); +}; + +static int sc520_freq_verify (struct cpufreq_policy *policy) +{ + return cpufreq_frequency_table_verify(policy, &sc520_freq_table[0]); +} + +static int sc520_freq_target (struct cpufreq_policy *policy, + unsigned int target_freq, + unsigned int relation) +{ + unsigned int newstate = 0; + + if (cpufreq_frequency_table_target(policy, sc520_freq_table, target_freq, relation, &newstate)) + return -EINVAL; + + sc520_freq_set_cpu_state(newstate); + + return 0; +} + + +/* + * Module init and exit code + */ + +static int sc520_freq_cpu_init(struct cpufreq_policy *policy) +{ + struct cpuinfo_x86 *c = cpu_data; + int result; + + /* capability check */ + if (c->x86_vendor != X86_VENDOR_AMD || + c->x86 != 4 || c->x86_model != 9) + return -ENODEV; + + /* cpuinfo and default policy values */ + policy->governor = CPUFREQ_DEFAULT_GOVERNOR; + policy->cpuinfo.transition_latency = 1000000; /* 1ms */ + policy->cur = sc520_freq_get_cpu_frequency(0); + + result = cpufreq_frequency_table_cpuinfo(policy, sc520_freq_table); + if (result) + return (result); + + cpufreq_frequency_table_get_attr(sc520_freq_table, policy->cpu); + + return 0; +} + + +static int sc520_freq_cpu_exit(struct cpufreq_policy *policy) +{ + cpufreq_frequency_table_put_attr(policy->cpu); + return 0; +} + + +static struct freq_attr* sc520_freq_attr[] = { + &cpufreq_freq_attr_scaling_available_freqs, + NULL, +}; + + +static struct cpufreq_driver sc520_freq_driver = { + .get = sc520_freq_get_cpu_frequency, + .verify = sc520_freq_verify, + .target = sc520_freq_target, + .init = sc520_freq_cpu_init, + .exit = sc520_freq_cpu_exit, + .name = "sc520_freq", + .owner = THIS_MODULE, + .attr = sc520_freq_attr, +}; + + +static int __init sc520_freq_init(void) +{ + struct cpuinfo_x86 *c = cpu_data; + + /* Test if we have the right hardware */ + if(c->x86_vendor != X86_VENDOR_AMD || + c->x86 != 4 || c->x86_model != 9) { + dprintk("no Elan SC520 processor found!\n"); + return -ENODEV; + } + cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1); + if(!cpuctl) { + printk(KERN_ERR "sc520_freq: error: failed to remap memory\n"); + return -ENOMEM; + } + + return cpufreq_register_driver(&sc520_freq_driver); +} + + +static void __exit sc520_freq_exit(void) +{ + cpufreq_unregister_driver(&sc520_freq_driver); + iounmap(cpuctl); +} + + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Sean Young <sean@mess.org>"); +MODULE_DESCRIPTION("cpufreq driver for AMD's Elan sc520 CPU"); + +module_init(sc520_freq_init); +module_exit(sc520_freq_exit); + diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c index 07d5612dc00..7dcbf70fc16 100644 --- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c @@ -54,6 +54,8 @@ enum { CPU_DOTHAN_A1, CPU_DOTHAN_A2, CPU_DOTHAN_B0, + CPU_MP4HT_D0, + CPU_MP4HT_E0, }; static const struct cpu_id cpu_ids[] = { @@ -61,6 +63,8 @@ static const struct cpu_id cpu_ids[] = { [CPU_DOTHAN_A1] = { 6, 13, 1 }, [CPU_DOTHAN_A2] = { 6, 13, 2 }, [CPU_DOTHAN_B0] = { 6, 13, 6 }, + [CPU_MP4HT_D0] = {15, 3, 4 }, + [CPU_MP4HT_E0] = {15, 4, 1 }, }; #define N_IDS (sizeof(cpu_ids)/sizeof(cpu_ids[0])) @@ -226,6 +230,8 @@ static struct cpu_model models[] = { &cpu_ids[CPU_DOTHAN_A1], NULL, 0, NULL }, { &cpu_ids[CPU_DOTHAN_A2], NULL, 0, NULL }, { &cpu_ids[CPU_DOTHAN_B0], NULL, 0, NULL }, + { &cpu_ids[CPU_MP4HT_D0], NULL, 0, NULL }, + { &cpu_ids[CPU_MP4HT_E0], NULL, 0, NULL }, { NULL, } }; diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-lib.c b/arch/i386/kernel/cpu/cpufreq/speedstep-lib.c index 8ba430a9c3a..d368b3f5fce 100644 --- a/arch/i386/kernel/cpu/cpufreq/speedstep-lib.c +++ b/arch/i386/kernel/cpu/cpufreq/speedstep-lib.c @@ -336,7 +336,7 @@ unsigned int speedstep_get_freqs(unsigned int processor, if (!prev_speed) return -EIO; - dprintk("previous seped is %u\n", prev_speed); + dprintk("previous speed is %u\n", prev_speed); local_irq_save(flags); @@ -348,7 +348,7 @@ unsigned int speedstep_get_freqs(unsigned int processor, goto out; } - dprintk("low seped is %u\n", *low_speed); + dprintk("low speed is %u\n", *low_speed); /* switch to high state */ set_state(SPEEDSTEP_HIGH); @@ -358,7 +358,7 @@ unsigned int speedstep_get_freqs(unsigned int processor, goto out; } - dprintk("high seped is %u\n", *high_speed); + dprintk("high speed is %u\n", *high_speed); if (*low_speed == *high_speed) { ret = -ENODEV; diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c b/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c index 79440b3f087..b25fb6b635a 100644 --- a/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c +++ b/arch/i386/kernel/cpu/cpufreq/speedstep-smi.c @@ -357,6 +357,9 @@ static int __init speedstep_init(void) case SPEEDSTEP_PROCESSOR_PIII_C: case SPEEDSTEP_PROCESSOR_PIII_C_EARLY: break; + case SPEEDSTEP_PROCESSOR_P4M: + printk(KERN_INFO "speedstep-smi: you're trying to use this cpufreq driver on a Pentium 4-based CPU. Most likely it will not work.\n"); + break; default: speedstep_processor = 0; } diff --git a/arch/i386/kernel/cpu/intel.c b/arch/i386/kernel/cpu/intel.c index 121aa2176e6..96a75d04583 100644 --- a/arch/i386/kernel/cpu/intel.c +++ b/arch/i386/kernel/cpu/intel.c @@ -28,7 +28,7 @@ extern int trap_init_f00f_bug(void); struct movsl_mask movsl_mask; #endif -void __init early_intel_workaround(struct cpuinfo_x86 *c) +void __devinit early_intel_workaround(struct cpuinfo_x86 *c) { if (c->x86_vendor != X86_VENDOR_INTEL) return; @@ -43,7 +43,7 @@ void __init early_intel_workaround(struct cpuinfo_x86 *c) * This is called before we do cpu ident work */ -int __init ppro_with_ram_bug(void) +int __devinit ppro_with_ram_bug(void) { /* Uses data from early_cpu_detect now */ if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && @@ -61,7 +61,7 @@ int __init ppro_with_ram_bug(void) * P4 Xeon errata 037 workaround. * Hardware prefetcher may cause stale data to be loaded into the cache. */ -static void __init Intel_errata_workarounds(struct cpuinfo_x86 *c) +static void __devinit Intel_errata_workarounds(struct cpuinfo_x86 *c) { unsigned long lo, hi; @@ -80,7 +80,7 @@ static void __init Intel_errata_workarounds(struct cpuinfo_x86 *c) /* * find out the number of processor cores on the die */ -static int __init num_cpu_cores(struct cpuinfo_x86 *c) +static int __devinit num_cpu_cores(struct cpuinfo_x86 *c) { unsigned int eax; @@ -98,7 +98,7 @@ static int __init num_cpu_cores(struct cpuinfo_x86 *c) return 1; } -static void __init init_intel(struct cpuinfo_x86 *c) +static void __devinit init_intel(struct cpuinfo_x86 *c) { unsigned int l2 = 0; char *p = NULL; @@ -204,7 +204,7 @@ static unsigned int intel_size_cache(struct cpuinfo_x86 * c, unsigned int size) return size; } -static struct cpu_dev intel_cpu_dev __initdata = { +static struct cpu_dev intel_cpu_dev __devinitdata = { .c_vendor = "Intel", .c_ident = { "GenuineIntel" }, .c_models = { diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c index aeb5b4ef8c8..1d768b26326 100644 --- a/arch/i386/kernel/cpu/intel_cacheinfo.c +++ b/arch/i386/kernel/cpu/intel_cacheinfo.c @@ -28,7 +28,7 @@ struct _cache_table }; /* all the cache descriptor types we care about (no TLB or trace cache entries) */ -static struct _cache_table cache_table[] __initdata = +static struct _cache_table cache_table[] __devinitdata = { { 0x06, LVL_1_INST, 8 }, /* 4-way set assoc, 32 byte line size */ { 0x08, LVL_1_INST, 16 }, /* 4-way set assoc, 32 byte line size */ @@ -118,7 +118,7 @@ struct _cpuid4_info { }; #define MAX_CACHE_LEAVES 4 -static unsigned short __devinitdata num_cache_leaves; +static unsigned short num_cache_leaves; static int __devinit cpuid4_cache_lookup(int index, struct _cpuid4_info *this_leaf) { @@ -160,7 +160,7 @@ static int __init find_num_cache_leaves(void) return retval; } -unsigned int __init init_intel_cacheinfo(struct cpuinfo_x86 *c) +unsigned int __devinit init_intel_cacheinfo(struct cpuinfo_x86 *c) { unsigned int trace = 0, l1i = 0, l1d = 0, l2 = 0, l3 = 0; /* Cache sizes */ unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */ diff --git a/arch/i386/kernel/cpu/mcheck/k7.c b/arch/i386/kernel/cpu/mcheck/k7.c index 8df52e86c4d..c4abe765739 100644 --- a/arch/i386/kernel/cpu/mcheck/k7.c +++ b/arch/i386/kernel/cpu/mcheck/k7.c @@ -69,7 +69,7 @@ static fastcall void k7_machine_check(struct pt_regs * regs, long error_code) /* AMD K7 machine check is Intel like */ -void __init amd_mcheck_init(struct cpuinfo_x86 *c) +void __devinit amd_mcheck_init(struct cpuinfo_x86 *c) { u32 l, h; int i; diff --git a/arch/i386/kernel/cpu/mcheck/mce.c b/arch/i386/kernel/cpu/mcheck/mce.c index bf6d1aefafc..2cf25d2ba0f 100644 --- a/arch/i386/kernel/cpu/mcheck/mce.c +++ b/arch/i386/kernel/cpu/mcheck/mce.c @@ -16,7 +16,7 @@ #include "mce.h" -int mce_disabled __initdata = 0; +int mce_disabled __devinitdata = 0; int nr_mce_banks; EXPORT_SYMBOL_GPL(nr_mce_banks); /* non-fatal.o */ @@ -31,7 +31,7 @@ static fastcall void unexpected_machine_check(struct pt_regs * regs, long error_ void fastcall (*machine_check_vector)(struct pt_regs *, long error_code) = unexpected_machine_check; /* This has to be run for each processor */ -void __init mcheck_init(struct cpuinfo_x86 *c) +void __devinit mcheck_init(struct cpuinfo_x86 *c) { if (mce_disabled==1) return; diff --git a/arch/i386/kernel/cpu/mcheck/p4.c b/arch/i386/kernel/cpu/mcheck/p4.c index 8b16ceb929b..0abccb6fdf9 100644 --- a/arch/i386/kernel/cpu/mcheck/p4.c +++ b/arch/i386/kernel/cpu/mcheck/p4.c @@ -78,7 +78,7 @@ fastcall void smp_thermal_interrupt(struct pt_regs *regs) } /* P4/Xeon Thermal regulation detect and init */ -static void __init intel_init_thermal(struct cpuinfo_x86 *c) +static void __devinit intel_init_thermal(struct cpuinfo_x86 *c) { u32 l, h; unsigned int cpu = smp_processor_id(); @@ -232,7 +232,7 @@ static fastcall void intel_machine_check(struct pt_regs * regs, long error_code) } -void __init intel_p4_mcheck_init(struct cpuinfo_x86 *c) +void __devinit intel_p4_mcheck_init(struct cpuinfo_x86 *c) { u32 l, h; int i; diff --git a/arch/i386/kernel/cpu/mcheck/p5.c b/arch/i386/kernel/cpu/mcheck/p5.c index c45a1b485c8..ec0614cd292 100644 --- a/arch/i386/kernel/cpu/mcheck/p5.c +++ b/arch/i386/kernel/cpu/mcheck/p5.c @@ -29,7 +29,7 @@ static fastcall void pentium_machine_check(struct pt_regs * regs, long error_cod } /* Set up machine check reporting for processors with Intel style MCE */ -void __init intel_p5_mcheck_init(struct cpuinfo_x86 *c) +void __devinit intel_p5_mcheck_init(struct cpuinfo_x86 *c) { u32 l, h; diff --git a/arch/i386/kernel/cpu/mcheck/p6.c b/arch/i386/kernel/cpu/mcheck/p6.c index 46640f8c249..f01b73f947e 100644 --- a/arch/i386/kernel/cpu/mcheck/p6.c +++ b/arch/i386/kernel/cpu/mcheck/p6.c @@ -80,7 +80,7 @@ static fastcall void intel_machine_check(struct pt_regs * regs, long error_code) } /* Set up machine check reporting for processors with Intel style MCE */ -void __init intel_p6_mcheck_init(struct cpuinfo_x86 *c) +void __devinit intel_p6_mcheck_init(struct cpuinfo_x86 *c) { u32 l, h; int i; diff --git a/arch/i386/kernel/cpu/mcheck/winchip.c b/arch/i386/kernel/cpu/mcheck/winchip.c index 753fa7acb98..7bae68fa168 100644 --- a/arch/i386/kernel/cpu/mcheck/winchip.c +++ b/arch/i386/kernel/cpu/mcheck/winchip.c @@ -23,7 +23,7 @@ static fastcall void winchip_machine_check(struct pt_regs * regs, long error_cod } /* Set up machine check reporting on the Winchip C6 series */ -void __init winchip_mcheck_init(struct cpuinfo_x86 *c) +void __devinit winchip_mcheck_init(struct cpuinfo_x86 *c) { u32 lo, hi; machine_check_vector = winchip_machine_check; diff --git a/arch/i386/kernel/cpu/mtrr/generic.c b/arch/i386/kernel/cpu/mtrr/generic.c index f468a979e9a..64d91f73a0a 100644 --- a/arch/i386/kernel/cpu/mtrr/generic.c +++ b/arch/i386/kernel/cpu/mtrr/generic.c @@ -70,8 +70,7 @@ void __init get_mtrr_state(void) /* Free resources associated with a struct mtrr_state */ void __init finalize_mtrr_state(void) { - if (mtrr_state.var_ranges) - kfree(mtrr_state.var_ranges); + kfree(mtrr_state.var_ranges); mtrr_state.var_ranges = NULL; } diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c index e1c2042b9b7..d66b09e0c82 100644 --- a/arch/i386/kernel/cpu/mtrr/main.c +++ b/arch/i386/kernel/cpu/mtrr/main.c @@ -375,6 +375,19 @@ int mtrr_add_page(unsigned long base, unsigned long size, return error; } +static int mtrr_check(unsigned long base, unsigned long size) +{ + if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) { + printk(KERN_WARNING + "mtrr: size and base must be multiples of 4 kiB\n"); + printk(KERN_DEBUG + "mtrr: size: 0x%lx base: 0x%lx\n", size, base); + dump_stack(); + return -1; + } + return 0; +} + /** * mtrr_add - Add a memory type region * @base: Physical base address of region @@ -415,11 +428,8 @@ int mtrr_add(unsigned long base, unsigned long size, unsigned int type, char increment) { - if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) { - printk(KERN_WARNING "mtrr: size and base must be multiples of 4 kiB\n"); - printk(KERN_DEBUG "mtrr: size: 0x%lx base: 0x%lx\n", size, base); + if (mtrr_check(base, size)) return -EINVAL; - } return mtrr_add_page(base >> PAGE_SHIFT, size >> PAGE_SHIFT, type, increment); } @@ -511,11 +521,8 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size) int mtrr_del(int reg, unsigned long base, unsigned long size) { - if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) { - printk(KERN_INFO "mtrr: size and base must be multiples of 4 kiB\n"); - printk(KERN_DEBUG "mtrr: size: 0x%lx base: 0x%lx\n", size, base); + if (mtrr_check(base, size)) return -EINVAL; - } return mtrr_del_page(reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT); } diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c index 7323c19f354..8bd77d948a8 100644 --- a/arch/i386/kernel/cpu/proc.c +++ b/arch/i386/kernel/cpu/proc.c @@ -86,7 +86,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, "stepping\t: unknown\n"); if ( cpu_has(c, X86_FEATURE_TSC) ) { - seq_printf(m, "cpu MHz\t\t: %lu.%03lu\n", + seq_printf(m, "cpu MHz\t\t: %u.%03u\n", cpu_khz / 1000, (cpu_khz % 1000)); } diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c index 2e2756345bb..4647db4ad6d 100644 --- a/arch/i386/kernel/cpuid.c +++ b/arch/i386/kernel/cpuid.c @@ -45,7 +45,7 @@ #include <asm/uaccess.h> #include <asm/system.h> -static struct class_simple *cpuid_class; +static struct class *cpuid_class; #ifdef CONFIG_SMP @@ -158,12 +158,12 @@ static struct file_operations cpuid_fops = { .open = cpuid_open, }; -static int cpuid_class_simple_device_add(int i) +static int cpuid_class_device_create(int i) { int err = 0; struct class_device *class_err; - class_err = class_simple_device_add(cpuid_class, MKDEV(CPUID_MAJOR, i), NULL, "cpu%d",i); + class_err = class_device_create(cpuid_class, MKDEV(CPUID_MAJOR, i), NULL, "cpu%d",i); if (IS_ERR(class_err)) err = PTR_ERR(class_err); return err; @@ -175,10 +175,10 @@ static int __devinit cpuid_class_cpu_callback(struct notifier_block *nfb, unsign switch (action) { case CPU_ONLINE: - cpuid_class_simple_device_add(cpu); + cpuid_class_device_create(cpu); break; case CPU_DEAD: - class_simple_device_remove(MKDEV(CPUID_MAJOR, cpu)); + class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu)); break; } return NOTIFY_OK; @@ -200,13 +200,13 @@ static int __init cpuid_init(void) err = -EBUSY; goto out; } - cpuid_class = class_simple_create(THIS_MODULE, "cpuid"); + cpuid_class = class_create(THIS_MODULE, "cpuid"); if (IS_ERR(cpuid_class)) { err = PTR_ERR(cpuid_class); goto out_chrdev; } for_each_online_cpu(i) { - err = cpuid_class_simple_device_add(i); + err = cpuid_class_device_create(i); if (err != 0) goto out_class; } @@ -218,9 +218,9 @@ static int __init cpuid_init(void) out_class: i = 0; for_each_online_cpu(i) { - class_simple_device_remove(MKDEV(CPUID_MAJOR, i)); + class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, i)); } - class_simple_destroy(cpuid_class); + class_destroy(cpuid_class); out_chrdev: unregister_chrdev(CPUID_MAJOR, "cpu/cpuid"); out: @@ -232,8 +232,8 @@ static void __exit cpuid_exit(void) int cpu = 0; for_each_online_cpu(cpu) - class_simple_device_remove(MKDEV(CPUID_MAJOR, cpu)); - class_simple_destroy(cpuid_class); + class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu)); + class_destroy(cpuid_class); unregister_chrdev(CPUID_MAJOR, "cpu/cpuid"); unregister_cpu_notifier(&cpuid_class_cpu_notifier); } diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c new file mode 100644 index 00000000000..e5fab12f792 --- /dev/null +++ b/arch/i386/kernel/crash.c @@ -0,0 +1,223 @@ +/* + * Architecture specific (i386) functions for kexec based crash dumps. + * + * Created by: Hariprasad Nellitheertha (hari@in.ibm.com) + * + * Copyright (C) IBM Corporation, 2004. All rights reserved. + * + */ + +#include <linux/init.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/smp.h> +#include <linux/irq.h> +#include <linux/reboot.h> +#include <linux/kexec.h> +#include <linux/irq.h> +#include <linux/delay.h> +#include <linux/elf.h> +#include <linux/elfcore.h> + +#include <asm/processor.h> +#include <asm/hardirq.h> +#include <asm/nmi.h> +#include <asm/hw_irq.h> +#include <asm/apic.h> +#include <mach_ipi.h> + + +note_buf_t crash_notes[NR_CPUS]; +/* This keeps a track of which one is crashing cpu. */ +static int crashing_cpu; + +static u32 *append_elf_note(u32 *buf, char *name, unsigned type, void *data, + size_t data_len) +{ + struct elf_note note; + + note.n_namesz = strlen(name) + 1; + note.n_descsz = data_len; + note.n_type = type; + memcpy(buf, ¬e, sizeof(note)); + buf += (sizeof(note) +3)/4; + memcpy(buf, name, note.n_namesz); + buf += (note.n_namesz + 3)/4; + memcpy(buf, data, note.n_descsz); + buf += (note.n_descsz + 3)/4; + + return buf; +} + +static void final_note(u32 *buf) +{ + struct elf_note note; + + note.n_namesz = 0; + note.n_descsz = 0; + note.n_type = 0; + memcpy(buf, ¬e, sizeof(note)); +} + +static void crash_save_this_cpu(struct pt_regs *regs, int cpu) +{ + struct elf_prstatus prstatus; + u32 *buf; + + if ((cpu < 0) || (cpu >= NR_CPUS)) + return; + + /* Using ELF notes here is opportunistic. + * I need a well defined structure format + * for the data I pass, and I need tags + * on the data to indicate what information I have + * squirrelled away. ELF notes happen to provide + * all of that that no need to invent something new. + */ + buf = &crash_notes[cpu][0]; + memset(&prstatus, 0, sizeof(prstatus)); + prstatus.pr_pid = current->pid; + elf_core_copy_regs(&prstatus.pr_reg, regs); + buf = append_elf_note(buf, "CORE", NT_PRSTATUS, &prstatus, + sizeof(prstatus)); + final_note(buf); +} + +static void crash_get_current_regs(struct pt_regs *regs) +{ + __asm__ __volatile__("movl %%ebx,%0" : "=m"(regs->ebx)); + __asm__ __volatile__("movl %%ecx,%0" : "=m"(regs->ecx)); + __asm__ __volatile__("movl %%edx,%0" : "=m"(regs->edx)); + __asm__ __volatile__("movl %%esi,%0" : "=m"(regs->esi)); + __asm__ __volatile__("movl %%edi,%0" : "=m"(regs->edi)); + __asm__ __volatile__("movl %%ebp,%0" : "=m"(regs->ebp)); + __asm__ __volatile__("movl %%eax,%0" : "=m"(regs->eax)); + __asm__ __volatile__("movl %%esp,%0" : "=m"(regs->esp)); + __asm__ __volatile__("movw %%ss, %%ax;" :"=a"(regs->xss)); + __asm__ __volatile__("movw %%cs, %%ax;" :"=a"(regs->xcs)); + __asm__ __volatile__("movw %%ds, %%ax;" :"=a"(regs->xds)); + __asm__ __volatile__("movw %%es, %%ax;" :"=a"(regs->xes)); + __asm__ __volatile__("pushfl; popl %0" :"=m"(regs->eflags)); + + regs->eip = (unsigned long)current_text_addr(); +} + +/* CPU does not save ss and esp on stack if execution is already + * running in kernel mode at the time of NMI occurrence. This code + * fixes it. + */ +static void crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs) +{ + memcpy(newregs, oldregs, sizeof(*newregs)); + newregs->esp = (unsigned long)&(oldregs->esp); + __asm__ __volatile__("xorl %eax, %eax;"); + __asm__ __volatile__ ("movw %%ss, %%ax;" :"=a"(newregs->xss)); +} + +/* We may have saved_regs from where the error came from + * or it is NULL if via a direct panic(). + */ +static void crash_save_self(struct pt_regs *saved_regs) +{ + struct pt_regs regs; + int cpu; + + cpu = smp_processor_id(); + if (saved_regs) + crash_setup_regs(®s, saved_regs); + else + crash_get_current_regs(®s); + crash_save_this_cpu(®s, cpu); +} + +#ifdef CONFIG_SMP +static atomic_t waiting_for_crash_ipi; + +static int crash_nmi_callback(struct pt_regs *regs, int cpu) +{ + struct pt_regs fixed_regs; + + /* Don't do anything if this handler is invoked on crashing cpu. + * Otherwise, system will completely hang. Crashing cpu can get + * an NMI if system was initially booted with nmi_watchdog parameter. + */ + if (cpu == crashing_cpu) + return 1; + local_irq_disable(); + + if (!user_mode(regs)) { + crash_setup_regs(&fixed_regs, regs); + regs = &fixed_regs; + } + crash_save_this_cpu(regs, cpu); + disable_local_APIC(); + atomic_dec(&waiting_for_crash_ipi); + /* Assume hlt works */ + __asm__("hlt"); + for(;;); + + return 1; +} + +/* + * By using the NMI code instead of a vector we just sneak thru the + * word generator coming out with just what we want. AND it does + * not matter if clustered_apic_mode is set or not. + */ +static void smp_send_nmi_allbutself(void) +{ + send_IPI_allbutself(APIC_DM_NMI); +} + +static void nmi_shootdown_cpus(void) +{ + unsigned long msecs; + + atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1); + /* Would it be better to replace the trap vector here? */ + set_nmi_callback(crash_nmi_callback); + /* Ensure the new callback function is set before sending + * out the NMI + */ + wmb(); + + smp_send_nmi_allbutself(); + + msecs = 1000; /* Wait at most a second for the other cpus to stop */ + while ((atomic_read(&waiting_for_crash_ipi) > 0) && msecs) { + mdelay(1); + msecs--; + } + + /* Leave the nmi callback set */ + disable_local_APIC(); +} +#else +static void nmi_shootdown_cpus(void) +{ + /* There are no cpus to shootdown */ +} +#endif + +void machine_crash_shutdown(struct pt_regs *regs) +{ + /* This function is only called after the system + * has paniced or is otherwise in a critical state. + * The minimum amount of code to allow a kexec'd kernel + * to run successfully needs to happen here. + * + * In practice this means shooting down the other cpus in + * an SMP system. + */ + /* The kernel is broken so disable interrupts */ + local_irq_disable(); + + /* Make a note of crashing cpu. Will be used in NMI callback.*/ + crashing_cpu = smp_processor_id(); + nmi_shootdown_cpus(); + lapic_shutdown(); +#if defined(CONFIG_X86_IO_APIC) + disable_IO_APIC(); +#endif + crash_save_self(regs); +} diff --git a/arch/i386/kernel/dmi_scan.c b/arch/i386/kernel/dmi_scan.c index 6ed7e28f306..a3cdf894302 100644 --- a/arch/i386/kernel/dmi_scan.c +++ b/arch/i386/kernel/dmi_scan.c @@ -1,22 +1,15 @@ #include <linux/types.h> -#include <linux/kernel.h> #include <linux/string.h> #include <linux/init.h> #include <linux/module.h> -#include <linux/slab.h> -#include <linux/acpi.h> -#include <asm/io.h> -#include <linux/pm.h> -#include <asm/system.h> #include <linux/dmi.h> #include <linux/bootmem.h> -struct dmi_header -{ - u8 type; - u8 length; - u16 handle; +struct dmi_header { + u8 type; + u8 length; + u16 handle; }; #undef DMI_DEBUG @@ -29,15 +22,13 @@ struct dmi_header static char * __init dmi_string(struct dmi_header *dm, u8 s) { - u8 *bp=(u8 *)dm; - bp+=dm->length; - if(!s) + u8 *bp = ((u8 *) dm) + dm->length; + + if (!s) return ""; s--; - while(s>0 && *bp) - { - bp+=strlen(bp); - bp++; + while (s > 0 && *bp) { + bp += strlen(bp) + 1; s--; } return bp; @@ -47,16 +38,14 @@ static char * __init dmi_string(struct dmi_header *dm, u8 s) * We have to be cautious here. We have seen BIOSes with DMI pointers * pointing to completely the wrong place for example */ - -static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dmi_header *)) +static int __init dmi_table(u32 base, int len, int num, + void (*decode)(struct dmi_header *)) { - u8 *buf; - struct dmi_header *dm; - u8 *data; - int i=0; + u8 *buf, *data; + int i = 0; buf = bt_ioremap(base, len); - if(buf==NULL) + if (buf == NULL) return -1; data = buf; @@ -65,36 +54,34 @@ static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dm * Stop when we see all the items the table claimed to have * OR we run off the end of the table (also happens) */ - - while(i<num && data-buf+sizeof(struct dmi_header)<=len) - { - dm=(struct dmi_header *)data; + while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { + struct dmi_header *dm = (struct dmi_header *)data; /* * We want to know the total length (formated area and strings) * before decoding to make sure we won't run off the table in * dmi_decode or dmi_string */ - data+=dm->length; - while(data-buf<len-1 && (data[0] || data[1])) + data += dm->length; + while ((data - buf < len - 1) && (data[0] || data[1])) data++; - if(data-buf<len-1) + if (data - buf < len - 1) decode(dm); - data+=2; + data += 2; i++; } bt_iounmap(buf, len); return 0; } - -inline static int __init dmi_checksum(u8 *buf) +static int __init dmi_checksum(u8 *buf) { - u8 sum=0; + u8 sum = 0; int a; - for(a=0; a<15; a++) - sum+=buf[a]; - return (sum==0); + for (a = 0; a < 15; a++) + sum += buf[a]; + + return sum == 0; } static int __init dmi_iterate(void (*decode)(struct dmi_header *)) @@ -110,28 +97,30 @@ static int __init dmi_iterate(void (*decode)(struct dmi_header *)) p = ioremap(0xF0000, 0x10000); if (p == NULL) return -1; + for (q = p; q < p + 0x10000; q += 16) { memcpy_fromio(buf, q, 15); - if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf)) - { - u16 num=buf[13]<<8|buf[12]; - u16 len=buf[7]<<8|buf[6]; - u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8]; + if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) { + u16 num = (buf[13] << 8) | buf[12]; + u16 len = (buf[7] << 8) | buf[6]; + u32 base = (buf[11] << 24) | (buf[10] << 16) | + (buf[9] << 8) | buf[8]; /* * DMI version 0.0 means that the real version is taken from * the SMBIOS version, which we don't know at this point. */ - if(buf[14]!=0) + if (buf[14] != 0) printk(KERN_INFO "DMI %d.%d present.\n", - buf[14]>>4, buf[14]&0x0F); + buf[14] >> 4, buf[14] & 0xF); else printk(KERN_INFO "DMI present.\n"); + dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n", num, len)); - dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", - base)); - if(dmi_table(base,len, num, decode)==0) + dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", base)); + + if (dmi_table(base,len, num, decode) == 0) return 0; } } @@ -143,16 +132,17 @@ static char *dmi_ident[DMI_STRING_MAX]; /* * Save a DMI string */ - static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string) { char *d = (char*)dm; char *p = dmi_string(dm, d[string]); - if(p==NULL || *p == 0) + + if (p == NULL || *p == 0) return; if (dmi_ident[slot]) return; - dmi_ident[slot] = alloc_bootmem(strlen(p)+1); + + dmi_ident[slot] = alloc_bootmem(strlen(p) + 1); if(dmi_ident[slot]) strcpy(dmi_ident[slot], p); else @@ -160,281 +150,47 @@ static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string) } /* - * Ugly compatibility crap. - */ -#define dmi_blacklist dmi_system_id -#define NO_MATCH { DMI_NONE, NULL} -#define MATCH DMI_MATCH - -/* - * Toshiba keyboard likes to repeat keys when they are not repeated. - */ - -static __init int broken_toshiba_keyboard(struct dmi_blacklist *d) -{ - printk(KERN_WARNING "Toshiba with broken keyboard detected. If your keyboard sometimes generates 3 keypresses instead of one, see http://davyd.ucc.asn.au/projects/toshiba/README\n"); - return 0; -} - - -#ifdef CONFIG_ACPI_SLEEP -static __init int reset_videomode_after_s3(struct dmi_blacklist *d) -{ - /* See acpi_wakeup.S */ - extern long acpi_video_flags; - acpi_video_flags |= 2; - return 0; -} -#endif - - -#ifdef CONFIG_ACPI_BOOT -extern int acpi_force; - -static __init __attribute__((unused)) int dmi_disable_acpi(struct dmi_blacklist *d) -{ - if (!acpi_force) { - printk(KERN_NOTICE "%s detected: acpi off\n",d->ident); - disable_acpi(); - } else { - printk(KERN_NOTICE - "Warning: DMI blacklist says broken, but acpi forced\n"); - } - return 0; -} - -/* - * Limit ACPI to CPU enumeration for HT - */ -static __init __attribute__((unused)) int force_acpi_ht(struct dmi_blacklist *d) -{ - if (!acpi_force) { - printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", d->ident); - disable_acpi(); - acpi_ht = 1; - } else { - printk(KERN_NOTICE - "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); - } - return 0; -} -#endif - -#ifdef CONFIG_ACPI_PCI -static __init int disable_acpi_irq(struct dmi_blacklist *d) -{ - if (!acpi_force) { - printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", - d->ident); - acpi_noirq_set(); - } - return 0; -} -static __init int disable_acpi_pci(struct dmi_blacklist *d) -{ - if (!acpi_force) { - printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", - d->ident); - acpi_disable_pci(); - } - return 0; -} -#endif - -/* - * Process the DMI blacklists - */ - - -/* - * This will be expanded over time to force things like the APM - * interrupt mask settings according to the laptop - */ - -static __initdata struct dmi_blacklist dmi_blacklist[]={ - - { broken_toshiba_keyboard, "Toshiba Satellite 4030cdt", { /* Keyboard generates spurious repeats */ - MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), - NO_MATCH, NO_MATCH, NO_MATCH - } }, -#ifdef CONFIG_ACPI_SLEEP - { reset_videomode_after_s3, "Toshiba Satellite 4030cdt", { /* Reset video mode after returning from ACPI S3 sleep */ - MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), - NO_MATCH, NO_MATCH, NO_MATCH - } }, -#endif - -#ifdef CONFIG_ACPI_BOOT - /* - * If your system is blacklisted here, but you find that acpi=force - * works for you, please contact acpi-devel@sourceforge.net - */ - - /* - * Boxes that need ACPI disabled - */ - - { dmi_disable_acpi, "IBM Thinkpad", { - MATCH(DMI_BOARD_VENDOR, "IBM"), - MATCH(DMI_BOARD_NAME, "2629H1G"), - NO_MATCH, NO_MATCH }}, - - /* - * Boxes that need acpi=ht - */ - - { force_acpi_ht, "FSC Primergy T850", { - MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), - MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "DELL GX240", { - MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"), - MATCH(DMI_BOARD_NAME, "OptiPlex GX240"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "HP VISUALIZE NT Workstation", { - MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), - MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "Compaq Workstation W8000", { - MATCH(DMI_SYS_VENDOR, "Compaq"), - MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "ASUS P4B266", { - MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), - MATCH(DMI_BOARD_NAME, "P4B266"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "ASUS P2B-DS", { - MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), - MATCH(DMI_BOARD_NAME, "P2B-DS"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "ASUS CUR-DLS", { - MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), - MATCH(DMI_BOARD_NAME, "CUR-DLS"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "ABIT i440BX-W83977", { - MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), - MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "IBM Bladecenter", { - MATCH(DMI_BOARD_VENDOR, "IBM"), - MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "IBM eServer xSeries 360", { - MATCH(DMI_BOARD_VENDOR, "IBM"), - MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "IBM eserver xSeries 330", { - MATCH(DMI_BOARD_VENDOR, "IBM"), - MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), - NO_MATCH, NO_MATCH }}, - - { force_acpi_ht, "IBM eserver xSeries 440", { - MATCH(DMI_BOARD_VENDOR, "IBM"), - MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), - NO_MATCH, NO_MATCH }}, - -#endif // CONFIG_ACPI_BOOT - -#ifdef CONFIG_ACPI_PCI - /* - * Boxes that need ACPI PCI IRQ routing disabled - */ - - { disable_acpi_irq, "ASUS A7V", { - MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), - MATCH(DMI_BOARD_NAME, "<A7V>"), - /* newer BIOS, Revision 1011, does work */ - MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"), - NO_MATCH }}, - - /* - * Boxes that need ACPI PCI IRQ routing and PCI scan disabled - */ - { disable_acpi_pci, "ASUS PR-DLS", { /* _BBN 0 bug */ - MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), - MATCH(DMI_BOARD_NAME, "PR-DLS"), - MATCH(DMI_BIOS_VERSION, "ASUS PR-DLS ACPI BIOS Revision 1010"), - MATCH(DMI_BIOS_DATE, "03/21/2003") }}, - - { disable_acpi_pci, "Acer TravelMate 36x Laptop", { - MATCH(DMI_SYS_VENDOR, "Acer"), - MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), - NO_MATCH, NO_MATCH - } }, - -#endif - - { NULL, } -}; - -/* * Process a DMI table entry. Right now all we care about are the BIOS * and machine entries. For 2.5 we should pull the smbus controller info * out of here. */ - static void __init dmi_decode(struct dmi_header *dm) { -#ifdef DMI_DEBUG - u8 *data = (u8 *)dm; -#endif + u8 *data __attribute__((__unused__)) = (u8 *)dm; - switch(dm->type) - { - case 0: - dmi_printk(("BIOS Vendor: %s\n", - dmi_string(dm, data[4]))); - dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); - dmi_printk(("BIOS Version: %s\n", - dmi_string(dm, data[5]))); - dmi_save_ident(dm, DMI_BIOS_VERSION, 5); - dmi_printk(("BIOS Release: %s\n", - dmi_string(dm, data[8]))); - dmi_save_ident(dm, DMI_BIOS_DATE, 8); - break; - case 1: - dmi_printk(("System Vendor: %s\n", - dmi_string(dm, data[4]))); - dmi_save_ident(dm, DMI_SYS_VENDOR, 4); - dmi_printk(("Product Name: %s\n", - dmi_string(dm, data[5]))); - dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); - dmi_printk(("Version: %s\n", - dmi_string(dm, data[6]))); - dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); - dmi_printk(("Serial Number: %s\n", - dmi_string(dm, data[7]))); - break; - case 2: - dmi_printk(("Board Vendor: %s\n", - dmi_string(dm, data[4]))); - dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); - dmi_printk(("Board Name: %s\n", - dmi_string(dm, data[5]))); - dmi_save_ident(dm, DMI_BOARD_NAME, 5); - dmi_printk(("Board Version: %s\n", - dmi_string(dm, data[6]))); - dmi_save_ident(dm, DMI_BOARD_VERSION, 6); - break; + switch(dm->type) { + case 0: + dmi_printk(("BIOS Vendor: %s\n", dmi_string(dm, data[4]))); + dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); + dmi_printk(("BIOS Version: %s\n", dmi_string(dm, data[5]))); + dmi_save_ident(dm, DMI_BIOS_VERSION, 5); + dmi_printk(("BIOS Release: %s\n", dmi_string(dm, data[8]))); + dmi_save_ident(dm, DMI_BIOS_DATE, 8); + break; + case 1: + dmi_printk(("System Vendor: %s\n", dmi_string(dm, data[4]))); + dmi_save_ident(dm, DMI_SYS_VENDOR, 4); + dmi_printk(("Product Name: %s\n", dmi_string(dm, data[5]))); + dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); + dmi_printk(("Version: %s\n", dmi_string(dm, data[6]))); + dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); + dmi_printk(("Serial Number: %s\n", dmi_string(dm, data[7]))); + dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); + break; + case 2: + dmi_printk(("Board Vendor: %s\n", dmi_string(dm, data[4]))); + dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); + dmi_printk(("Board Name: %s\n", dmi_string(dm, data[5]))); + dmi_save_ident(dm, DMI_BOARD_NAME, 5); + dmi_printk(("Board Version: %s\n", dmi_string(dm, data[6]))); + dmi_save_ident(dm, DMI_BOARD_VERSION, 6); + break; } } void __init dmi_scan_machine(void) { - int err = dmi_iterate(dmi_decode); - if(err == 0) - dmi_check_system(dmi_blacklist); - else + if (dmi_iterate(dmi_decode)) printk(KERN_INFO "DMI not present.\n"); } @@ -470,7 +226,6 @@ fail: d++; return count; } - EXPORT_SYMBOL(dmi_check_system); /** @@ -480,8 +235,8 @@ EXPORT_SYMBOL(dmi_check_system); * Returns one DMI data value, can be used to perform * complex DMI data checks. */ -char * dmi_get_system_info(int field) +char *dmi_get_system_info(int field) { return dmi_ident[field]; } - +EXPORT_SYMBOL(dmi_get_system_info); diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c index f732f427b41..385883ea8c1 100644 --- a/arch/i386/kernel/efi.c +++ b/arch/i386/kernel/efi.c @@ -30,6 +30,7 @@ #include <linux/ioport.h> #include <linux/module.h> #include <linux/efi.h> +#include <linux/kexec.h> #include <asm/setup.h> #include <asm/io.h> @@ -598,6 +599,9 @@ efi_initialize_iomem_resources(struct resource *code_resource, if (md->type == EFI_CONVENTIONAL_MEMORY) { request_resource(res, code_resource); request_resource(res, data_resource); +#ifdef CONFIG_KEXEC + request_resource(res, &crashk_res); +#endif } } } diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S index e966fc8c44c..4477bb10709 100644 --- a/arch/i386/kernel/head.S +++ b/arch/i386/kernel/head.S @@ -299,7 +299,6 @@ is386: movl $2,%ecx # set MP movl %eax,%cr0 call check_x87 - incb ready lgdt cpu_gdt_descr lidt idt_descr ljmp $(__KERNEL_CS),$1f @@ -316,8 +315,9 @@ is386: movl $2,%ecx # set MP lldt %ax cld # gcc2 wants the direction flag cleared at all times #ifdef CONFIG_SMP - movb ready, %cl - cmpb $1,%cl + movb ready, %cl + movb $1, ready + cmpb $0,%cl je 1f # the first CPU calls start_kernel # all other CPUs call initialize_secondary call initialize_secondary diff --git a/arch/i386/kernel/i386_ksyms.c b/arch/i386/kernel/i386_ksyms.c index 903190a4b3f..180f070d03c 100644 --- a/arch/i386/kernel/i386_ksyms.c +++ b/arch/i386/kernel/i386_ksyms.c @@ -1,97 +1,17 @@ #include <linux/config.h> #include <linux/module.h> -#include <linux/smp.h> -#include <linux/user.h> -#include <linux/elfcore.h> -#include <linux/mca.h> -#include <linux/sched.h> -#include <linux/in6.h> -#include <linux/interrupt.h> -#include <linux/smp_lock.h> -#include <linux/pm.h> -#include <linux/pci.h> -#include <linux/apm_bios.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/tty.h> -#include <linux/highmem.h> -#include <linux/time.h> - -#include <asm/semaphore.h> -#include <asm/processor.h> -#include <asm/i387.h> -#include <asm/uaccess.h> #include <asm/checksum.h> -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/mmx.h> #include <asm/desc.h> -#include <asm/pgtable.h> -#include <asm/tlbflush.h> -#include <asm/nmi.h> -#include <asm/ist.h> -#include <asm/kdebug.h> - -extern void dump_thread(struct pt_regs *, struct user *); -extern spinlock_t rtc_lock; /* This is definitely a GPL-only symbol */ EXPORT_SYMBOL_GPL(cpu_gdt_table); -#if defined(CONFIG_APM_MODULE) -extern void machine_real_restart(unsigned char *, int); -EXPORT_SYMBOL(machine_real_restart); -extern void default_idle(void); -EXPORT_SYMBOL(default_idle); -#endif - -#ifdef CONFIG_SMP -extern void FASTCALL( __write_lock_failed(rwlock_t *rw)); -extern void FASTCALL( __read_lock_failed(rwlock_t *rw)); -#endif - -#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE) -extern struct drive_info_struct drive_info; -EXPORT_SYMBOL(drive_info); -#endif - -extern unsigned long cpu_khz; -extern unsigned long get_cmos_time(void); - -/* platform dependent support */ -EXPORT_SYMBOL(boot_cpu_data); -#ifdef CONFIG_DISCONTIGMEM -EXPORT_SYMBOL(node_data); -EXPORT_SYMBOL(physnode_map); -#endif -#ifdef CONFIG_X86_NUMAQ -EXPORT_SYMBOL(xquad_portio); -#endif -EXPORT_SYMBOL(dump_thread); -EXPORT_SYMBOL(dump_fpu); -EXPORT_SYMBOL_GPL(kernel_fpu_begin); -EXPORT_SYMBOL(__ioremap); -EXPORT_SYMBOL(ioremap_nocache); -EXPORT_SYMBOL(iounmap); -EXPORT_SYMBOL(kernel_thread); -EXPORT_SYMBOL(pm_idle); -EXPORT_SYMBOL(pm_power_off); -EXPORT_SYMBOL(get_cmos_time); -EXPORT_SYMBOL(cpu_khz); -EXPORT_SYMBOL(apm_info); - EXPORT_SYMBOL(__down_failed); EXPORT_SYMBOL(__down_failed_interruptible); EXPORT_SYMBOL(__down_failed_trylock); EXPORT_SYMBOL(__up_wakeup); /* Networking helper routines. */ EXPORT_SYMBOL(csum_partial_copy_generic); -/* Delay loops */ -EXPORT_SYMBOL(__ndelay); -EXPORT_SYMBOL(__udelay); -EXPORT_SYMBOL(__delay); -EXPORT_SYMBOL(__const_udelay); EXPORT_SYMBOL(__get_user_1); EXPORT_SYMBOL(__get_user_2); @@ -105,87 +25,11 @@ EXPORT_SYMBOL(__put_user_8); EXPORT_SYMBOL(strpbrk); EXPORT_SYMBOL(strstr); -EXPORT_SYMBOL(strncpy_from_user); -EXPORT_SYMBOL(__strncpy_from_user); -EXPORT_SYMBOL(clear_user); -EXPORT_SYMBOL(__clear_user); -EXPORT_SYMBOL(__copy_from_user_ll); -EXPORT_SYMBOL(__copy_to_user_ll); -EXPORT_SYMBOL(strnlen_user); - -EXPORT_SYMBOL(dma_alloc_coherent); -EXPORT_SYMBOL(dma_free_coherent); - -#ifdef CONFIG_PCI -EXPORT_SYMBOL(pci_mem_start); -#endif - -#ifdef CONFIG_PCI_BIOS -EXPORT_SYMBOL(pcibios_set_irq_routing); -EXPORT_SYMBOL(pcibios_get_irq_routing_table); -#endif - -#ifdef CONFIG_X86_USE_3DNOW -EXPORT_SYMBOL(_mmx_memcpy); -EXPORT_SYMBOL(mmx_clear_page); -EXPORT_SYMBOL(mmx_copy_page); -#endif - -#ifdef CONFIG_X86_HT -EXPORT_SYMBOL(smp_num_siblings); -EXPORT_SYMBOL(cpu_sibling_map); -#endif - #ifdef CONFIG_SMP -EXPORT_SYMBOL(cpu_data); -EXPORT_SYMBOL(cpu_online_map); -EXPORT_SYMBOL(cpu_callout_map); +extern void FASTCALL( __write_lock_failed(rwlock_t *rw)); +extern void FASTCALL( __read_lock_failed(rwlock_t *rw)); EXPORT_SYMBOL(__write_lock_failed); EXPORT_SYMBOL(__read_lock_failed); - -/* Global SMP stuff */ -EXPORT_SYMBOL(smp_call_function); - -/* TLB flushing */ -EXPORT_SYMBOL(flush_tlb_page); -#endif - -#ifdef CONFIG_X86_IO_APIC -EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); -#endif - -#ifdef CONFIG_MCA -EXPORT_SYMBOL(machine_id); -#endif - -#ifdef CONFIG_VT -EXPORT_SYMBOL(screen_info); -#endif - -EXPORT_SYMBOL(get_wchan); - -EXPORT_SYMBOL(rtc_lock); - -EXPORT_SYMBOL_GPL(set_nmi_callback); -EXPORT_SYMBOL_GPL(unset_nmi_callback); - -EXPORT_SYMBOL(register_die_notifier); -#ifdef CONFIG_HAVE_DEC_LOCK -EXPORT_SYMBOL(_atomic_dec_and_lock); -#endif - -EXPORT_SYMBOL(__PAGE_KERNEL); - -#ifdef CONFIG_HIGHMEM -EXPORT_SYMBOL(kmap); -EXPORT_SYMBOL(kunmap); -EXPORT_SYMBOL(kmap_atomic); -EXPORT_SYMBOL(kunmap_atomic); -EXPORT_SYMBOL(kmap_atomic_to_page); -#endif - -#if defined(CONFIG_X86_SPEEDSTEP_SMI) || defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) -EXPORT_SYMBOL(ist_info); #endif EXPORT_SYMBOL(csum_partial); diff --git a/arch/i386/kernel/i387.c b/arch/i386/kernel/i387.c index c55e037f08f..b817168d9c6 100644 --- a/arch/i386/kernel/i387.c +++ b/arch/i386/kernel/i387.c @@ -10,6 +10,7 @@ #include <linux/config.h> #include <linux/sched.h> +#include <linux/module.h> #include <asm/processor.h> #include <asm/i387.h> #include <asm/math_emu.h> @@ -79,6 +80,7 @@ void kernel_fpu_begin(void) } clts(); } +EXPORT_SYMBOL_GPL(kernel_fpu_begin); void restore_fpu( struct task_struct *tsk ) { @@ -526,6 +528,7 @@ int dump_fpu( struct pt_regs *regs, struct user_i387_struct *fpu ) return fpvalid; } +EXPORT_SYMBOL(dump_fpu); int dump_task_fpu(struct task_struct *tsk, struct user_i387_struct *fpu) { diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c index 2c4813b47e5..178f4e9bac9 100644 --- a/arch/i386/kernel/i8259.c +++ b/arch/i386/kernel/i8259.c @@ -268,10 +268,22 @@ static int i8259A_suspend(struct sys_device *dev, pm_message_t state) return 0; } +static int i8259A_shutdown(struct sys_device *dev) +{ + /* Put the i8259A into a quiescent state that + * the kernel initialization code can get it + * out of. + */ + outb(0xff, 0x21); /* mask all of 8259A-1 */ + outb(0xff, 0xA1); /* mask all of 8259A-1 */ + return 0; +} + static struct sysdev_class i8259_sysdev_class = { set_kset_name("i8259"), .suspend = i8259A_suspend, .resume = i8259A_resume, + .shutdown = i8259A_shutdown, }; static struct sys_device device_i8259A = { diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c index 7a324e8b86f..35eb8e29c48 100644 --- a/arch/i386/kernel/io_apic.c +++ b/arch/i386/kernel/io_apic.c @@ -31,7 +31,7 @@ #include <linux/mc146818rtc.h> #include <linux/compiler.h> #include <linux/acpi.h> - +#include <linux/module.h> #include <linux/sysdev.h> #include <asm/io.h> #include <asm/smp.h> @@ -573,12 +573,14 @@ static int balanced_irq(void *unused) for ( ; ; ) { set_current_state(TASK_INTERRUPTIBLE); time_remaining = schedule_timeout(time_remaining); - try_to_freeze(PF_FREEZE); + try_to_freeze(); if (time_after(jiffies, prev_balance_time+balanced_irq_interval)) { + preempt_disable(); do_irq_balance(); prev_balance_time = jiffies; time_remaining = balanced_irq_interval; + preempt_enable(); } } return 0; @@ -630,10 +632,8 @@ static int __init balanced_irq_init(void) printk(KERN_ERR "balanced_irq_init: failed to spawn balanced_irq"); failed: for (i = 0; i < NR_CPUS; i++) { - if(irq_cpu_data[i].irq_delta) - kfree(irq_cpu_data[i].irq_delta); - if(irq_cpu_data[i].last_irq) - kfree(irq_cpu_data[i].last_irq); + kfree(irq_cpu_data[i].irq_delta); + kfree(irq_cpu_data[i].last_irq); } return 0; } @@ -812,6 +812,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin) } return best_guess; } +EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); /* * This function currently is only a helper for the i386 smp boot process where @@ -1633,12 +1634,43 @@ static void __init enable_IO_APIC(void) */ void disable_IO_APIC(void) { + int pin; /* * Clear the IO-APIC before rebooting: */ clear_IO_APIC(); - disconnect_bsp_APIC(); + /* + * If the i82559 is routed through an IOAPIC + * Put that IOAPIC in virtual wire mode + * so legacy interrups can be delivered. + */ + pin = find_isa_irq_pin(0, mp_ExtINT); + if (pin != -1) { + struct IO_APIC_route_entry entry; + unsigned long flags; + + memset(&entry, 0, sizeof(entry)); + entry.mask = 0; /* Enabled */ + entry.trigger = 0; /* Edge */ + entry.irr = 0; + entry.polarity = 0; /* High */ + entry.delivery_status = 0; + entry.dest_mode = 0; /* Physical */ + entry.delivery_mode = 7; /* ExtInt */ + entry.vector = 0; + entry.dest.physical.physical_dest = 0; + + + /* + * Add it to the IO-APIC irq-routing table: + */ + spin_lock_irqsave(&ioapic_lock, flags); + io_apic_write(0, 0x11+2*pin, *(((int *)&entry)+1)); + io_apic_write(0, 0x10+2*pin, *(((int *)&entry)+0)); + spin_unlock_irqrestore(&ioapic_lock, flags); + } + disconnect_bsp_APIC(pin != -1); } /* @@ -1659,6 +1691,12 @@ static void __init setup_ioapic_ids_from_mpc(void) unsigned long flags; /* + * Don't check I/O APIC IDs for xAPIC systems. They have + * no meaning without the serial APIC bus. + */ + if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && boot_cpu_data.x86 < 15)) + return; + /* * This is broken; anything with a real cpu count has to * circumvent this idiocy regardless. */ @@ -1684,10 +1722,6 @@ static void __init setup_ioapic_ids_from_mpc(void) mp_ioapics[apic].mpc_apicid = reg_00.bits.ID; } - /* Don't check I/O APIC IDs for some xAPIC systems. They have - * no meaning without the serial APIC bus. */ - if (NO_IOAPIC_CHECK) - continue; /* * Sanity check, is the ID really free? Every APIC in a * system must have a unique ID or we get lots of nice diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c index 73945a3c53c..ce66dcc26d9 100644 --- a/arch/i386/kernel/irq.c +++ b/arch/i386/kernel/irq.c @@ -15,6 +15,9 @@ #include <linux/seq_file.h> #include <linux/interrupt.h> #include <linux/kernel_stat.h> +#include <linux/notifier.h> +#include <linux/cpu.h> +#include <linux/delay.h> DEFINE_PER_CPU(irq_cpustat_t, irq_stat) ____cacheline_maxaligned_in_smp; EXPORT_PER_CPU_SYMBOL(irq_stat); @@ -153,6 +156,11 @@ void irq_ctx_init(int cpu) cpu,hardirq_ctx[cpu],softirq_ctx[cpu]); } +void irq_ctx_exit(int cpu) +{ + hardirq_ctx[cpu] = NULL; +} + extern asmlinkage void __do_softirq(void); asmlinkage void do_softirq(void) @@ -210,9 +218,8 @@ int show_interrupts(struct seq_file *p, void *v) if (i == 0) { seq_printf(p, " "); - for (j=0; j<NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "CPU%d ",j); + for_each_cpu(j) + seq_printf(p, "CPU%d ",j); seq_putc(p, '\n'); } @@ -225,9 +232,8 @@ int show_interrupts(struct seq_file *p, void *v) #ifndef CONFIG_SMP seq_printf(p, "%10u ", kstat_irqs(i)); #else - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); + for_each_cpu(j) + seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); #endif seq_printf(p, " %14s", irq_desc[i].handler->typename); seq_printf(p, " %s", action->name); @@ -240,16 +246,14 @@ skip: spin_unlock_irqrestore(&irq_desc[i].lock, flags); } else if (i == NR_IRQS) { seq_printf(p, "NMI: "); - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "%10u ", nmi_count(j)); + for_each_cpu(j) + seq_printf(p, "%10u ", nmi_count(j)); seq_putc(p, '\n'); #ifdef CONFIG_X86_LOCAL_APIC seq_printf(p, "LOC: "); - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "%10u ", - per_cpu(irq_stat,j).apic_timer_irqs); + for_each_cpu(j) + seq_printf(p, "%10u ", + per_cpu(irq_stat,j).apic_timer_irqs); seq_putc(p, '\n'); #endif seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); @@ -259,3 +263,45 @@ skip: } return 0; } + +#ifdef CONFIG_HOTPLUG_CPU +#include <mach_apic.h> + +void fixup_irqs(cpumask_t map) +{ + unsigned int irq; + static int warned; + + for (irq = 0; irq < NR_IRQS; irq++) { + cpumask_t mask; + if (irq == 2) + continue; + + cpus_and(mask, irq_affinity[irq], map); + if (any_online_cpu(mask) == NR_CPUS) { + printk("Breaking affinity for irq %i\n", irq); + mask = map; + } + if (irq_desc[irq].handler->set_affinity) + irq_desc[irq].handler->set_affinity(irq, mask); + else if (irq_desc[irq].action && !(warned++)) + printk("Cannot set affinity for irq %i\n", irq); + } + +#if 0 + barrier(); + /* Ingo Molnar says: "after the IO-APIC masks have been redirected + [note the nop - the interrupt-enable boundary on x86 is two + instructions from sti] - to flush out pending hardirqs and + IPIs. After this point nothing is supposed to reach this CPU." */ + __asm__ __volatile__("sti; nop; cli"); + barrier(); +#else + /* That doesn't seem sufficient. Give it 1ms. */ + local_irq_enable(); + mdelay(1); + local_irq_disable(); +#endif +} +#endif + diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c index 59ff9b45506..3762f6b35ab 100644 --- a/arch/i386/kernel/kprobes.c +++ b/arch/i386/kernel/kprobes.c @@ -23,6 +23,9 @@ * Rusty Russell). * 2004-July Suparna Bhattacharya <suparna@in.ibm.com> added jumper probes * interface to access function arguments. + * 2005-May Hien Nguyen <hien@us.ibm.com>, Jim Keniston + * <jkenisto@us.ibm.com> and Prasanna S Panchamukhi + * <prasanna@in.ibm.com> added function-return probes. */ #include <linux/config.h> @@ -30,15 +33,14 @@ #include <linux/ptrace.h> #include <linux/spinlock.h> #include <linux/preempt.h> +#include <asm/cacheflush.h> #include <asm/kdebug.h> #include <asm/desc.h> -/* kprobe_status settings */ -#define KPROBE_HIT_ACTIVE 0x00000001 -#define KPROBE_HIT_SS 0x00000002 - static struct kprobe *current_kprobe; static unsigned long kprobe_status, kprobe_old_eflags, kprobe_saved_eflags; +static struct kprobe *kprobe_prev; +static unsigned long kprobe_status_prev, kprobe_old_eflags_prev, kprobe_saved_eflags_prev; static struct pt_regs jprobe_saved_regs; static long *jprobe_saved_esp; /* copy of the kernel stack at the probe fire time */ @@ -68,16 +70,50 @@ int arch_prepare_kprobe(struct kprobe *p) void arch_copy_kprobe(struct kprobe *p) { memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); + p->opcode = *p->addr; } -void arch_remove_kprobe(struct kprobe *p) +void arch_arm_kprobe(struct kprobe *p) { + *p->addr = BREAKPOINT_INSTRUCTION; + flush_icache_range((unsigned long) p->addr, + (unsigned long) p->addr + sizeof(kprobe_opcode_t)); } -static inline void disarm_kprobe(struct kprobe *p, struct pt_regs *regs) +void arch_disarm_kprobe(struct kprobe *p) { *p->addr = p->opcode; - regs->eip = (unsigned long)p->addr; + flush_icache_range((unsigned long) p->addr, + (unsigned long) p->addr + sizeof(kprobe_opcode_t)); +} + +void arch_remove_kprobe(struct kprobe *p) +{ +} + +static inline void save_previous_kprobe(void) +{ + kprobe_prev = current_kprobe; + kprobe_status_prev = kprobe_status; + kprobe_old_eflags_prev = kprobe_old_eflags; + kprobe_saved_eflags_prev = kprobe_saved_eflags; +} + +static inline void restore_previous_kprobe(void) +{ + current_kprobe = kprobe_prev; + kprobe_status = kprobe_status_prev; + kprobe_old_eflags = kprobe_old_eflags_prev; + kprobe_saved_eflags = kprobe_saved_eflags_prev; +} + +static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs) +{ + current_kprobe = p; + kprobe_saved_eflags = kprobe_old_eflags + = (regs->eflags & (TF_MASK | IF_MASK)); + if (is_IF_modifier(p->opcode)) + kprobe_saved_eflags &= ~IF_MASK; } static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs) @@ -91,6 +127,50 @@ static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs) regs->eip = (unsigned long)&p->ainsn.insn; } +struct task_struct *arch_get_kprobe_task(void *ptr) +{ + return ((struct thread_info *) (((unsigned long) ptr) & + (~(THREAD_SIZE -1))))->task; +} + +void arch_prepare_kretprobe(struct kretprobe *rp, struct pt_regs *regs) +{ + unsigned long *sara = (unsigned long *)®s->esp; + struct kretprobe_instance *ri; + static void *orig_ret_addr; + + /* + * Save the return address when the return probe hits + * the first time, and use it to populate the (krprobe + * instance)->ret_addr for subsequent return probes at + * the same addrress since stack address would have + * the kretprobe_trampoline by then. + */ + if (((void*) *sara) != kretprobe_trampoline) + orig_ret_addr = (void*) *sara; + + if ((ri = get_free_rp_inst(rp)) != NULL) { + ri->rp = rp; + ri->stack_addr = sara; + ri->ret_addr = orig_ret_addr; + add_rp_inst(ri); + /* Replace the return addr with trampoline addr */ + *sara = (unsigned long) &kretprobe_trampoline; + } else { + rp->nmissed++; + } +} + +void arch_kprobe_flush_task(struct task_struct *tk) +{ + struct kretprobe_instance *ri; + while ((ri = get_rp_inst_tsk(tk)) != NULL) { + *((unsigned long *)(ri->stack_addr)) = + (unsigned long) ri->ret_addr; + recycle_rp_inst(ri); + } +} + /* * Interrupts are disabled on entry as trap3 is an interrupt gate and they * remain disabled thorough out this function. @@ -127,8 +207,18 @@ static int kprobe_handler(struct pt_regs *regs) unlock_kprobes(); goto no_kprobe; } - disarm_kprobe(p, regs); - ret = 1; + /* We have reentered the kprobe_handler(), since + * another probe was hit while within the handler. + * We here save the original kprobes variables and + * just single step on the instruction of the new probe + * without calling any user handlers. + */ + save_previous_kprobe(); + set_current_kprobe(p, regs); + p->nmissed++; + prepare_singlestep(p, regs); + kprobe_status = KPROBE_REENTER; + return 1; } else { p = current_kprobe; if (p->break_handler && p->break_handler(p, regs)) { @@ -163,11 +253,7 @@ static int kprobe_handler(struct pt_regs *regs) } kprobe_status = KPROBE_HIT_ACTIVE; - current_kprobe = p; - kprobe_saved_eflags = kprobe_old_eflags - = (regs->eflags & (TF_MASK | IF_MASK)); - if (is_IF_modifier(p->opcode)) - kprobe_saved_eflags &= ~IF_MASK; + set_current_kprobe(p, regs); if (p->pre_handler && p->pre_handler(p, regs)) /* handler has already set things up, so skip ss setup */ @@ -184,6 +270,55 @@ no_kprobe: } /* + * For function-return probes, init_kprobes() establishes a probepoint + * here. When a retprobed function returns, this probe is hit and + * trampoline_probe_handler() runs, calling the kretprobe's handler. + */ + void kretprobe_trampoline_holder(void) + { + asm volatile ( ".global kretprobe_trampoline\n" + "kretprobe_trampoline: \n" + "nop\n"); + } + +/* + * Called when we hit the probe point at kretprobe_trampoline + */ +int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs) +{ + struct task_struct *tsk; + struct kretprobe_instance *ri; + struct hlist_head *head; + struct hlist_node *node; + unsigned long *sara = ((unsigned long *) ®s->esp) - 1; + + tsk = arch_get_kprobe_task(sara); + head = kretprobe_inst_table_head(tsk); + + hlist_for_each_entry(ri, node, head, hlist) { + if (ri->stack_addr == sara && ri->rp) { + if (ri->rp->handler) + ri->rp->handler(ri, regs); + } + } + return 0; +} + +void trampoline_post_handler(struct kprobe *p, struct pt_regs *regs, + unsigned long flags) +{ + struct kretprobe_instance *ri; + /* RA already popped */ + unsigned long *sara = ((unsigned long *)®s->esp) - 1; + + while ((ri = get_rp_inst(sara))) { + regs->eip = (unsigned long)ri->ret_addr; + recycle_rp_inst(ri); + } + regs->eflags &= ~TF_MASK; +} + +/* * Called after single-stepping. p->addr is the address of the * instruction whose first byte has been replaced by the "int 3" * instruction. To avoid the SMP problems that can occur when we @@ -263,13 +398,22 @@ static inline int post_kprobe_handler(struct pt_regs *regs) if (!kprobe_running()) return 0; - if (current_kprobe->post_handler) + if ((kprobe_status != KPROBE_REENTER) && current_kprobe->post_handler) { + kprobe_status = KPROBE_HIT_SSDONE; current_kprobe->post_handler(current_kprobe, regs, 0); + } - resume_execution(current_kprobe, regs); + if (current_kprobe->post_handler != trampoline_post_handler) + resume_execution(current_kprobe, regs); regs->eflags |= kprobe_saved_eflags; + /*Restore back the original saved kprobes variables and continue. */ + if (kprobe_status == KPROBE_REENTER) { + restore_previous_kprobe(); + goto out; + } unlock_kprobes(); +out: preempt_enable_no_resched(); /* diff --git a/arch/i386/kernel/machine_kexec.c b/arch/i386/kernel/machine_kexec.c new file mode 100644 index 00000000000..52ed18d8b51 --- /dev/null +++ b/arch/i386/kernel/machine_kexec.c @@ -0,0 +1,226 @@ +/* + * machine_kexec.c - handle transition of Linux booting another kernel + * Copyright (C) 2002-2005 Eric Biederman <ebiederm@xmission.com> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <linux/mm.h> +#include <linux/kexec.h> +#include <linux/delay.h> +#include <asm/pgtable.h> +#include <asm/pgalloc.h> +#include <asm/tlbflush.h> +#include <asm/mmu_context.h> +#include <asm/io.h> +#include <asm/apic.h> +#include <asm/cpufeature.h> + +static inline unsigned long read_cr3(void) +{ + unsigned long cr3; + asm volatile("movl %%cr3,%0": "=r"(cr3)); + return cr3; +} + +#define PAGE_ALIGNED __attribute__ ((__aligned__(PAGE_SIZE))) + +#define L0_ATTR (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY) +#define L1_ATTR (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY) +#define L2_ATTR (_PAGE_PRESENT) + +#define LEVEL0_SIZE (1UL << 12UL) + +#ifndef CONFIG_X86_PAE +#define LEVEL1_SIZE (1UL << 22UL) +static u32 pgtable_level1[1024] PAGE_ALIGNED; + +static void identity_map_page(unsigned long address) +{ + unsigned long level1_index, level2_index; + u32 *pgtable_level2; + + /* Find the current page table */ + pgtable_level2 = __va(read_cr3()); + + /* Find the indexes of the physical address to identity map */ + level1_index = (address % LEVEL1_SIZE)/LEVEL0_SIZE; + level2_index = address / LEVEL1_SIZE; + + /* Identity map the page table entry */ + pgtable_level1[level1_index] = address | L0_ATTR; + pgtable_level2[level2_index] = __pa(pgtable_level1) | L1_ATTR; + + /* Flush the tlb so the new mapping takes effect. + * Global tlb entries are not flushed but that is not an issue. + */ + load_cr3(pgtable_level2); +} + +#else +#define LEVEL1_SIZE (1UL << 21UL) +#define LEVEL2_SIZE (1UL << 30UL) +static u64 pgtable_level1[512] PAGE_ALIGNED; +static u64 pgtable_level2[512] PAGE_ALIGNED; + +static void identity_map_page(unsigned long address) +{ + unsigned long level1_index, level2_index, level3_index; + u64 *pgtable_level3; + + /* Find the current page table */ + pgtable_level3 = __va(read_cr3()); + + /* Find the indexes of the physical address to identity map */ + level1_index = (address % LEVEL1_SIZE)/LEVEL0_SIZE; + level2_index = (address % LEVEL2_SIZE)/LEVEL1_SIZE; + level3_index = address / LEVEL2_SIZE; + + /* Identity map the page table entry */ + pgtable_level1[level1_index] = address | L0_ATTR; + pgtable_level2[level2_index] = __pa(pgtable_level1) | L1_ATTR; + set_64bit(&pgtable_level3[level3_index], + __pa(pgtable_level2) | L2_ATTR); + + /* Flush the tlb so the new mapping takes effect. + * Global tlb entries are not flushed but that is not an issue. + */ + load_cr3(pgtable_level3); +} +#endif + + +static void set_idt(void *newidt, __u16 limit) +{ + unsigned char curidt[6]; + + /* ia32 supports unaliged loads & stores */ + (*(__u16 *)(curidt)) = limit; + (*(__u32 *)(curidt +2)) = (unsigned long)(newidt); + + __asm__ __volatile__ ( + "lidt %0\n" + : "=m" (curidt) + ); +}; + + +static void set_gdt(void *newgdt, __u16 limit) +{ + unsigned char curgdt[6]; + + /* ia32 supports unaligned loads & stores */ + (*(__u16 *)(curgdt)) = limit; + (*(__u32 *)(curgdt +2)) = (unsigned long)(newgdt); + + __asm__ __volatile__ ( + "lgdt %0\n" + : "=m" (curgdt) + ); +}; + +static void load_segments(void) +{ +#define __STR(X) #X +#define STR(X) __STR(X) + + __asm__ __volatile__ ( + "\tljmp $"STR(__KERNEL_CS)",$1f\n" + "\t1:\n" + "\tmovl $"STR(__KERNEL_DS)",%eax\n" + "\tmovl %eax,%ds\n" + "\tmovl %eax,%es\n" + "\tmovl %eax,%fs\n" + "\tmovl %eax,%gs\n" + "\tmovl %eax,%ss\n" + ); +#undef STR +#undef __STR +} + +typedef asmlinkage NORET_TYPE void (*relocate_new_kernel_t)( + unsigned long indirection_page, + unsigned long reboot_code_buffer, + unsigned long start_address, + unsigned int has_pae) ATTRIB_NORET; + +const extern unsigned char relocate_new_kernel[]; +extern void relocate_new_kernel_end(void); +const extern unsigned int relocate_new_kernel_size; + +/* + * A architecture hook called to validate the + * proposed image and prepare the control pages + * as needed. The pages for KEXEC_CONTROL_CODE_SIZE + * have been allocated, but the segments have yet + * been copied into the kernel. + * + * Do what every setup is needed on image and the + * reboot code buffer to allow us to avoid allocations + * later. + * + * Currently nothing. + */ +int machine_kexec_prepare(struct kimage *image) +{ + return 0; +} + +/* + * Undo anything leftover by machine_kexec_prepare + * when an image is freed. + */ +void machine_kexec_cleanup(struct kimage *image) +{ +} + +/* + * Do not allocate memory (or fail in any way) in machine_kexec(). + * We are past the point of no return, committed to rebooting now. + */ +NORET_TYPE void machine_kexec(struct kimage *image) +{ + unsigned long page_list; + unsigned long reboot_code_buffer; + + relocate_new_kernel_t rnk; + + /* Interrupts aren't acceptable while we reboot */ + local_irq_disable(); + + /* Compute some offsets */ + reboot_code_buffer = page_to_pfn(image->control_code_page) + << PAGE_SHIFT; + page_list = image->head; + + /* Set up an identity mapping for the reboot_code_buffer */ + identity_map_page(reboot_code_buffer); + + /* copy it out */ + memcpy((void *)reboot_code_buffer, relocate_new_kernel, + relocate_new_kernel_size); + + /* The segment registers are funny things, they are + * automatically loaded from a table, in memory wherever you + * set them to a specific selector, but this table is never + * accessed again you set the segment to a different selector. + * + * The more common model is are caches where the behide + * the scenes work is done, but is also dropped at arbitrary + * times. + * + * I take advantage of this here by force loading the + * segments, before I zap the gdt with an invalid value. + */ + load_segments(); + /* The gdt & idt are now invalid. + * If you want to load them you must set up your own idt & gdt. + */ + set_gdt(phys_to_virt(0),0); + set_idt(phys_to_virt(0),0); + + /* now call it */ + rnk = (relocate_new_kernel_t) reboot_code_buffer; + (*rnk)(page_list, reboot_code_buffer, image->start, cpu_has_pae); +} diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index 1347ab4939e..af917f609c7 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -67,7 +67,6 @@ unsigned long mp_lapic_addr; /* Processor that is doing the boot up */ unsigned int boot_cpu_physical_apicid = -1U; -unsigned int boot_cpu_logical_apicid = -1U; /* Internal processor count */ static unsigned int __initdata num_processors; @@ -180,7 +179,6 @@ static void __init MP_processor_info (struct mpc_config_processor *m) if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { Dprintk(" Bootup CPU\n"); boot_cpu_physical_apicid = m->mpc_apicid; - boot_cpu_logical_apicid = apicid; } if (num_processors >= NR_CPUS) { @@ -914,7 +912,10 @@ void __init mp_register_ioapic ( mp_ioapics[idx].mpc_apicaddr = address; set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); - mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id); + if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15)) + mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id); + else + mp_ioapics[idx].mpc_apicid = id; mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx); /* @@ -1055,11 +1056,20 @@ void __init mp_config_acpi_legacy_irqs (void) } } +#define MAX_GSI_NUM 4096 + int mp_register_gsi (u32 gsi, int edge_level, int active_high_low) { int ioapic = -1; int ioapic_pin = 0; int idx, bit = 0; + static int pci_irq = 16; + /* + * Mapping between Global System Interrups, which + * represent all possible interrupts, and IRQs + * assigned to actual devices. + */ + static int gsi_to_irq[MAX_GSI_NUM]; #ifdef CONFIG_ACPI_BUS /* Don't set up the ACPI SCI because it's already set up */ @@ -1094,11 +1104,26 @@ int mp_register_gsi (u32 gsi, int edge_level, int active_high_low) if ((1<<bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) { Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n", mp_ioapic_routing[ioapic].apic_id, ioapic_pin); - return gsi; + return gsi_to_irq[gsi]; } mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit); + if (edge_level) { + /* + * For PCI devices assign IRQs in order, avoiding gaps + * due to unused I/O APIC pins. + */ + int irq = gsi; + if (gsi < MAX_GSI_NUM) { + gsi = pci_irq++; + gsi_to_irq[irq] = gsi; + } else { + printk(KERN_ERR "GSI %u is too high\n", gsi); + return gsi; + } + } + io_apic_set_pci_routing(ioapic, ioapic_pin, gsi, edge_level == ACPI_EDGE_SENSITIVE ? 0 : 1, active_high_low == ACPI_ACTIVE_HIGH ? 0 : 1); diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c index 05d9f8f363a..b2f03c39a6f 100644 --- a/arch/i386/kernel/msr.c +++ b/arch/i386/kernel/msr.c @@ -44,7 +44,7 @@ #include <asm/uaccess.h> #include <asm/system.h> -static struct class_simple *msr_class; +static struct class *msr_class; /* Note: "err" is handled in a funny way below. Otherwise one version of gcc or another breaks. */ @@ -260,12 +260,12 @@ static struct file_operations msr_fops = { .open = msr_open, }; -static int msr_class_simple_device_add(int i) +static int msr_class_device_create(int i) { int err = 0; struct class_device *class_err; - class_err = class_simple_device_add(msr_class, MKDEV(MSR_MAJOR, i), NULL, "msr%d",i); + class_err = class_device_create(msr_class, MKDEV(MSR_MAJOR, i), NULL, "msr%d",i); if (IS_ERR(class_err)) err = PTR_ERR(class_err); return err; @@ -277,10 +277,10 @@ static int __devinit msr_class_cpu_callback(struct notifier_block *nfb, unsigned switch (action) { case CPU_ONLINE: - msr_class_simple_device_add(cpu); + msr_class_device_create(cpu); break; case CPU_DEAD: - class_simple_device_remove(MKDEV(MSR_MAJOR, cpu)); + class_device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu)); break; } return NOTIFY_OK; @@ -302,13 +302,13 @@ static int __init msr_init(void) err = -EBUSY; goto out; } - msr_class = class_simple_create(THIS_MODULE, "msr"); + msr_class = class_create(THIS_MODULE, "msr"); if (IS_ERR(msr_class)) { err = PTR_ERR(msr_class); goto out_chrdev; } for_each_online_cpu(i) { - err = msr_class_simple_device_add(i); + err = msr_class_device_create(i); if (err != 0) goto out_class; } @@ -320,8 +320,8 @@ static int __init msr_init(void) out_class: i = 0; for_each_online_cpu(i) - class_simple_device_remove(MKDEV(MSR_MAJOR, i)); - class_simple_destroy(msr_class); + class_device_destroy(msr_class, MKDEV(MSR_MAJOR, i)); + class_destroy(msr_class); out_chrdev: unregister_chrdev(MSR_MAJOR, "cpu/msr"); out: @@ -332,8 +332,8 @@ static void __exit msr_exit(void) { int cpu = 0; for_each_online_cpu(cpu) - class_simple_device_remove(MKDEV(MSR_MAJOR, cpu)); - class_simple_destroy(msr_class); + class_device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu)); + class_destroy(msr_class); unregister_chrdev(MSR_MAJOR, "cpu/msr"); unregister_cpu_notifier(&msr_class_cpu_notifier); } diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c index 2c0ee9c2d02..da6c46d667c 100644 --- a/arch/i386/kernel/nmi.c +++ b/arch/i386/kernel/nmi.c @@ -28,8 +28,7 @@ #include <linux/sysctl.h> #include <asm/smp.h> -#include <asm/mtrr.h> -#include <asm/mpspec.h> +#include <asm/div64.h> #include <asm/nmi.h> #include "mach_traps.h" @@ -324,6 +323,16 @@ static void clear_msr_range(unsigned int base, unsigned int n) wrmsr(base+i, 0, 0); } +static inline void write_watchdog_counter(const char *descr) +{ + u64 count = (u64)cpu_khz * 1000; + + do_div(count, nmi_hz); + if(descr) + Dprintk("setting %s to -0x%08Lx\n", descr, count); + wrmsrl(nmi_perfctr_msr, 0 - count); +} + static void setup_k7_watchdog(void) { unsigned int evntsel; @@ -339,8 +348,7 @@ static void setup_k7_watchdog(void) | K7_NMI_EVENT; wrmsr(MSR_K7_EVNTSEL0, evntsel, 0); - Dprintk("setting K7_PERFCTR0 to %08lx\n", -(cpu_khz/nmi_hz*1000)); - wrmsr(MSR_K7_PERFCTR0, -(cpu_khz/nmi_hz*1000), -1); + write_watchdog_counter("K7_PERFCTR0"); apic_write(APIC_LVTPC, APIC_DM_NMI); evntsel |= K7_EVNTSEL_ENABLE; wrmsr(MSR_K7_EVNTSEL0, evntsel, 0); @@ -361,8 +369,7 @@ static void setup_p6_watchdog(void) | P6_NMI_EVENT; wrmsr(MSR_P6_EVNTSEL0, evntsel, 0); - Dprintk("setting P6_PERFCTR0 to %08lx\n", -(cpu_khz/nmi_hz*1000)); - wrmsr(MSR_P6_PERFCTR0, -(cpu_khz/nmi_hz*1000), 0); + write_watchdog_counter("P6_PERFCTR0"); apic_write(APIC_LVTPC, APIC_DM_NMI); evntsel |= P6_EVNTSEL0_ENABLE; wrmsr(MSR_P6_EVNTSEL0, evntsel, 0); @@ -402,8 +409,7 @@ static int setup_p4_watchdog(void) wrmsr(MSR_P4_CRU_ESCR0, P4_NMI_CRU_ESCR0, 0); wrmsr(MSR_P4_IQ_CCCR0, P4_NMI_IQ_CCCR0 & ~P4_CCCR_ENABLE, 0); - Dprintk("setting P4_IQ_COUNTER0 to 0x%08lx\n", -(cpu_khz/nmi_hz*1000)); - wrmsr(MSR_P4_IQ_COUNTER0, -(cpu_khz/nmi_hz*1000), -1); + write_watchdog_counter("P4_IQ_COUNTER0"); apic_write(APIC_LVTPC, APIC_DM_NMI); wrmsr(MSR_P4_IQ_CCCR0, nmi_p4_cccr_val, 0); return 1; @@ -518,7 +524,7 @@ void nmi_watchdog_tick (struct pt_regs * regs) * other P6 variant */ apic_write(APIC_LVTPC, APIC_DM_NMI); } - wrmsr(nmi_perfctr_msr, -(cpu_khz/nmi_hz*1000), -1); + write_watchdog_counter(NULL); } } diff --git a/arch/i386/kernel/pci-dma.c b/arch/i386/kernel/pci-dma.c index 4de2e03c7b4..1e51427cc9e 100644 --- a/arch/i386/kernel/pci-dma.c +++ b/arch/i386/kernel/pci-dma.c @@ -11,6 +11,7 @@ #include <linux/mm.h> #include <linux/string.h> #include <linux/pci.h> +#include <linux/module.h> #include <asm/io.h> struct dma_coherent_mem { @@ -54,6 +55,7 @@ void *dma_alloc_coherent(struct device *dev, size_t size, } return ret; } +EXPORT_SYMBOL(dma_alloc_coherent); void dma_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle) @@ -68,6 +70,7 @@ void dma_free_coherent(struct device *dev, size_t size, } else free_pages((unsigned long)vaddr, order); } +EXPORT_SYMBOL(dma_free_coherent); int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, dma_addr_t device_addr, size_t size, int flags) diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c index 96e3ea6b17c..5f8cfa6b794 100644 --- a/arch/i386/kernel/process.c +++ b/arch/i386/kernel/process.c @@ -13,6 +13,7 @@ #include <stdarg.h> +#include <linux/cpu.h> #include <linux/errno.h> #include <linux/sched.h> #include <linux/fs.h> @@ -37,6 +38,7 @@ #include <linux/kallsyms.h> #include <linux/ptrace.h> #include <linux/random.h> +#include <linux/kprobes.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -54,6 +56,9 @@ #include <linux/irq.h> #include <linux/err.h> +#include <asm/tlbflush.h> +#include <asm/cpu.h> + asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); static int hlt_counter; @@ -73,6 +78,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk) * Powermanagement idle function, if any.. */ void (*pm_idle)(void); +EXPORT_SYMBOL(pm_idle); static DEFINE_PER_CPU(unsigned int, cpu_idle_state); void disable_hlt(void) @@ -105,6 +111,9 @@ void default_idle(void) cpu_relax(); } } +#ifdef CONFIG_APM_MODULE +EXPORT_SYMBOL(default_idle); +#endif /* * On SMP it's slightly faster (but much more power-consuming!) @@ -138,14 +147,42 @@ static void poll_idle (void) } } +#ifdef CONFIG_HOTPLUG_CPU +#include <asm/nmi.h> +/* We don't actually take CPU down, just spin without interrupts. */ +static inline void play_dead(void) +{ + /* This must be done before dead CPU ack */ + cpu_exit_clear(); + wbinvd(); + mb(); + /* Ack it */ + __get_cpu_var(cpu_state) = CPU_DEAD; + + /* + * With physical CPU hotplug, we should halt the cpu + */ + local_irq_disable(); + while (1) + __asm__ __volatile__("hlt":::"memory"); +} +#else +static inline void play_dead(void) +{ + BUG(); +} +#endif /* CONFIG_HOTPLUG_CPU */ + /* * The idle thread. There's no useful work to be * done, so just try to conserve power and have a * low exit latency (ie sit in a loop waiting for * somebody to say that they'd like to reschedule) */ -void cpu_idle (void) +void cpu_idle(void) { + int cpu = raw_smp_processor_id(); + /* endless idle loop with no priority at all */ while (1) { while (!need_resched()) { @@ -160,6 +197,9 @@ void cpu_idle (void) if (!idle) idle = default_idle; + if (cpu_is_offline(cpu)) + play_dead(); + __get_cpu_var(irq_stat).idle_timestamp = jiffies; idle(); } @@ -218,7 +258,7 @@ static void mwait_idle(void) } } -void __init select_idle_routine(const struct cpuinfo_x86 *c) +void __devinit select_idle_routine(const struct cpuinfo_x86 *c) { if (cpu_has(c, X86_FEATURE_MWAIT)) { printk("monitor/mwait feature present.\n"); @@ -262,7 +302,7 @@ void show_regs(struct pt_regs * regs) printk("EIP: %04x:[<%08lx>] CPU: %d\n",0xffff & regs->xcs,regs->eip, smp_processor_id()); print_symbol("EIP is at %s\n", regs->eip); - if (regs->xcs & 3) + if (user_mode(regs)) printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp); printk(" EFLAGS: %08lx %s (%s)\n", regs->eflags, print_tainted(), system_utsname.release); @@ -325,6 +365,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) /* Ok, create the new process.. */ return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); } +EXPORT_SYMBOL(kernel_thread); /* * Free current thread data structures etc.. @@ -334,6 +375,13 @@ void exit_thread(void) struct task_struct *tsk = current; struct thread_struct *t = &tsk->thread; + /* + * Remove function-return probe instances associated with this task + * and put them back on the free list. Do not insert an exit probe for + * this function, it will be disabled by kprobe_flush_task if you do. + */ + kprobe_flush_task(tsk); + /* The process may have allocated an io port bitmap... nuke it. */ if (unlikely(NULL != t->io_bitmap_ptr)) { int cpu = get_cpu(); @@ -357,6 +405,13 @@ void flush_thread(void) { struct task_struct *tsk = current; + /* + * Remove function-return probe instances associated with this task + * and put them back on the free list. Do not insert an exit probe for + * this function, it will be disabled by kprobe_flush_task if you do. + */ + kprobe_flush_task(tsk); + memset(tsk->thread.debugreg, 0, sizeof(unsigned long)*8); memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array)); /* @@ -508,6 +563,7 @@ void dump_thread(struct pt_regs * regs, struct user * dump) dump->u_fpvalid = dump_fpu (regs, &dump->i387); } +EXPORT_SYMBOL(dump_thread); /* * Capture the user space registers if the task is not running (in user space) @@ -627,13 +683,13 @@ struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct tas * Now maybe reload the debug registers */ if (unlikely(next->debugreg[7])) { - loaddebug(next, 0); - loaddebug(next, 1); - loaddebug(next, 2); - loaddebug(next, 3); + set_debugreg(current->thread.debugreg[0], 0); + set_debugreg(current->thread.debugreg[1], 1); + set_debugreg(current->thread.debugreg[2], 2); + set_debugreg(current->thread.debugreg[3], 3); /* no 4 and 5 */ - loaddebug(next, 6); - loaddebug(next, 7); + set_debugreg(current->thread.debugreg[6], 6); + set_debugreg(current->thread.debugreg[7], 7); } if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr)) @@ -731,6 +787,7 @@ unsigned long get_wchan(struct task_struct *p) } while (count++ < 16); return 0; } +EXPORT_SYMBOL(get_wchan); /* * sys_alloc_thread_area: get a yet unused TLS descriptor index. diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c index e34f651fa13..0da59b42843 100644 --- a/arch/i386/kernel/ptrace.c +++ b/arch/i386/kernel/ptrace.c @@ -668,7 +668,7 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code) info.si_code = TRAP_BRKPT; /* User-mode eip? */ - info.si_addr = user_mode(regs) ? (void __user *) regs->eip : NULL; + info.si_addr = user_mode_vm(regs) ? (void __user *) regs->eip : NULL; /* Send us the fakey SIGTRAP */ force_sig_info(SIGTRAP, &info, tsk); diff --git a/arch/i386/kernel/reboot.c b/arch/i386/kernel/reboot.c index 6dc27eb70ee..b3e58484996 100644 --- a/arch/i386/kernel/reboot.c +++ b/arch/i386/kernel/reboot.c @@ -2,6 +2,7 @@ * linux/arch/i386/kernel/reboot.c */ +#include <linux/config.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/delay.h> @@ -19,12 +20,12 @@ * Power off function, if any */ void (*pm_power_off)(void); +EXPORT_SYMBOL(pm_power_off); static int reboot_mode; static int reboot_thru_bios; #ifdef CONFIG_SMP -int reboot_smp = 0; static int reboot_cpu = -1; /* shamelessly grabbed from lib/vsprintf.c for readability */ #define is_digit(c) ((c) >= '0' && (c) <= '9') @@ -47,7 +48,6 @@ static int __init reboot_setup(char *str) break; #ifdef CONFIG_SMP case 's': /* "smp" reboot by executing reset on BSP or other CPU*/ - reboot_smp = 1; if (is_digit(*(str+1))) { reboot_cpu = (int) (*(str+1) - '0'); if (is_digit(*(str+2))) @@ -86,33 +86,9 @@ static int __init set_bios_reboot(struct dmi_system_id *d) return 0; } -/* - * Some machines require the "reboot=s" commandline option, this quirk makes that automatic. - */ -static int __init set_smp_reboot(struct dmi_system_id *d) -{ -#ifdef CONFIG_SMP - if (!reboot_smp) { - reboot_smp = 1; - printk(KERN_INFO "%s series board detected. Selecting SMP-method for reboots.\n", d->ident); - } -#endif - return 0; -} - -/* - * Some machines require the "reboot=b,s" commandline option, this quirk makes that automatic. - */ -static int __init set_smp_bios_reboot(struct dmi_system_id *d) -{ - set_smp_reboot(d); - set_bios_reboot(d); - return 0; -} - static struct dmi_system_id __initdata reboot_dmi_table[] = { { /* Handle problems with rebooting on Dell 1300's */ - .callback = set_smp_bios_reboot, + .callback = set_bios_reboot, .ident = "Dell PowerEdge 1300", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), @@ -295,42 +271,36 @@ void machine_real_restart(unsigned char *code, int length) : : "i" ((void *) (0x1000 - sizeof (real_mode_switch) - 100))); } +#ifdef CONFIG_APM_MODULE +EXPORT_SYMBOL(machine_real_restart); +#endif -void machine_restart(char * __unused) +void machine_shutdown(void) { #ifdef CONFIG_SMP - int cpuid; - - cpuid = GET_APIC_ID(apic_read(APIC_ID)); - - if (reboot_smp) { - - /* check to see if reboot_cpu is valid - if its not, default to the BSP */ - if ((reboot_cpu == -1) || - (reboot_cpu > (NR_CPUS -1)) || - !physid_isset(cpuid, phys_cpu_present_map)) - reboot_cpu = boot_cpu_physical_apicid; - - reboot_smp = 0; /* use this as a flag to only go through this once*/ - /* re-run this function on the other CPUs - it will fall though this section since we have - cleared reboot_smp, and do the reboot if it is the - correct CPU, otherwise it halts. */ - if (reboot_cpu != cpuid) - smp_call_function((void *)machine_restart , NULL, 1, 0); + int reboot_cpu_id; + + /* The boot cpu is always logical cpu 0 */ + reboot_cpu_id = 0; + + /* See if there has been given a command line override */ + if ((reboot_cpu_id != -1) && (reboot_cpu < NR_CPUS) && + cpu_isset(reboot_cpu, cpu_online_map)) { + reboot_cpu_id = reboot_cpu; } - /* if reboot_cpu is still -1, then we want a tradional reboot, - and if we are not running on the reboot_cpu,, halt */ - if ((reboot_cpu != -1) && (cpuid != reboot_cpu)) { - for (;;) - __asm__ __volatile__ ("hlt"); + /* Make certain the cpu I'm rebooting on is online */ + if (!cpu_isset(reboot_cpu_id, cpu_online_map)) { + reboot_cpu_id = smp_processor_id(); } - /* - * Stop all CPUs and turn off local APICs and the IO-APIC, so - * other OSs see a clean IRQ state. + + /* Make certain I only run on the appropriate processor */ + set_cpus_allowed(current, cpumask_of_cpu(reboot_cpu_id)); + + /* O.K. Now that I'm on the appropriate processor, stop + * all of the others, and disable their local APICs. */ + smp_send_stop(); #endif /* CONFIG_SMP */ @@ -339,6 +309,11 @@ void machine_restart(char * __unused) #ifdef CONFIG_X86_IO_APIC disable_IO_APIC(); #endif +} + +void machine_restart(char * __unused) +{ + machine_shutdown(); if (!reboot_thru_bios) { if (efi_enabled) { diff --git a/arch/i386/kernel/relocate_kernel.S b/arch/i386/kernel/relocate_kernel.S new file mode 100644 index 00000000000..d312616effa --- /dev/null +++ b/arch/i386/kernel/relocate_kernel.S @@ -0,0 +1,120 @@ +/* + * relocate_kernel.S - put the kernel image in place to boot + * Copyright (C) 2002-2004 Eric Biederman <ebiederm@xmission.com> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <linux/linkage.h> + + /* + * Must be relocatable PIC code callable as a C function, that once + * it starts can not use the previous processes stack. + */ + .globl relocate_new_kernel +relocate_new_kernel: + /* read the arguments and say goodbye to the stack */ + movl 4(%esp), %ebx /* page_list */ + movl 8(%esp), %ebp /* reboot_code_buffer */ + movl 12(%esp), %edx /* start address */ + movl 16(%esp), %ecx /* cpu_has_pae */ + + /* zero out flags, and disable interrupts */ + pushl $0 + popfl + + /* set a new stack at the bottom of our page... */ + lea 4096(%ebp), %esp + + /* store the parameters back on the stack */ + pushl %edx /* store the start address */ + + /* Set cr0 to a known state: + * 31 0 == Paging disabled + * 18 0 == Alignment check disabled + * 16 0 == Write protect disabled + * 3 0 == No task switch + * 2 0 == Don't do FP software emulation. + * 0 1 == Proctected mode enabled + */ + movl %cr0, %eax + andl $~((1<<31)|(1<<18)|(1<<16)|(1<<3)|(1<<2)), %eax + orl $(1<<0), %eax + movl %eax, %cr0 + + /* clear cr4 if applicable */ + testl %ecx, %ecx + jz 1f + /* Set cr4 to a known state: + * Setting everything to zero seems safe. + */ + movl %cr4, %eax + andl $0, %eax + movl %eax, %cr4 + + jmp 1f +1: + + /* Flush the TLB (needed?) */ + xorl %eax, %eax + movl %eax, %cr3 + + /* Do the copies */ + movl %ebx, %ecx + jmp 1f + +0: /* top, read another word from the indirection page */ + movl (%ebx), %ecx + addl $4, %ebx +1: + testl $0x1, %ecx /* is it a destination page */ + jz 2f + movl %ecx, %edi + andl $0xfffff000, %edi + jmp 0b +2: + testl $0x2, %ecx /* is it an indirection page */ + jz 2f + movl %ecx, %ebx + andl $0xfffff000, %ebx + jmp 0b +2: + testl $0x4, %ecx /* is it the done indicator */ + jz 2f + jmp 3f +2: + testl $0x8, %ecx /* is it the source indicator */ + jz 0b /* Ignore it otherwise */ + movl %ecx, %esi /* For every source page do a copy */ + andl $0xfffff000, %esi + + movl $1024, %ecx + rep ; movsl + jmp 0b + +3: + + /* To be certain of avoiding problems with self-modifying code + * I need to execute a serializing instruction here. + * So I flush the TLB, it's handy, and not processor dependent. + */ + xorl %eax, %eax + movl %eax, %cr3 + + /* set all of the registers to known values */ + /* leave %esp alone */ + + xorl %eax, %eax + xorl %ebx, %ebx + xorl %ecx, %ecx + xorl %edx, %edx + xorl %esi, %esi + xorl %edi, %edi + xorl %ebp, %ebp + ret +relocate_new_kernel_end: + + .globl relocate_new_kernel_size +relocate_new_kernel_size: + .long relocate_new_kernel_end - relocate_new_kernel diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index 945ec73163c..7306353c520 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -23,8 +23,10 @@ * This file handles the architecture-dependent parts of initialization */ +#include <linux/config.h> #include <linux/sched.h> #include <linux/mm.h> +#include <linux/mmzone.h> #include <linux/tty.h> #include <linux/ioport.h> #include <linux/acpi.h> @@ -41,7 +43,12 @@ #include <linux/init.h> #include <linux/edd.h> #include <linux/nodemask.h> +#include <linux/kexec.h> +#include <linux/crash_dump.h> + #include <video/edid.h> + +#include <asm/apic.h> #include <asm/e820.h> #include <asm/mpspec.h> #include <asm/setup.h> @@ -53,12 +60,15 @@ #include "setup_arch_pre.h" #include <bios_ebda.h> +/* Forward Declaration. */ +void __init find_max_pfn(void); + /* This value is set up by the early boot code to point to the value immediately after the boot time page tables. It contains a *physical* address, and must not be in the .bss segment! */ unsigned long init_pg_tables_end __initdata = ~0UL; -int disable_pse __initdata = 0; +int disable_pse __devinitdata = 0; /* * Machine setup.. @@ -73,6 +83,7 @@ EXPORT_SYMBOL(efi_enabled); struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 }; /* common cpu data for all cpus */ struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 1, 0, 0, -1 }; +EXPORT_SYMBOL(boot_cpu_data); unsigned long mmu_cr4_features; @@ -90,12 +101,18 @@ extern acpi_interrupt_flags acpi_sci_flags; /* for MCA, but anyone else can use it if they want */ unsigned int machine_id; +#ifdef CONFIG_MCA +EXPORT_SYMBOL(machine_id); +#endif unsigned int machine_submodel_id; unsigned int BIOS_revision; unsigned int mca_pentium_flag; /* For PCI or other memory-mapped resources */ unsigned long pci_mem_start = 0x10000000; +#ifdef CONFIG_PCI +EXPORT_SYMBOL(pci_mem_start); +#endif /* Boot loader ID as an integer, for the benefit of proc_dointvec */ int bootloader_type; @@ -107,14 +124,26 @@ static unsigned int highmem_pages = -1; * Setup options */ struct drive_info_struct { char dummy[32]; } drive_info; +#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || \ + defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE) +EXPORT_SYMBOL(drive_info); +#endif struct screen_info screen_info; +#ifdef CONFIG_VT +EXPORT_SYMBOL(screen_info); +#endif struct apm_info apm_info; +EXPORT_SYMBOL(apm_info); struct sys_desc_table_struct { unsigned short length; unsigned char table[0]; }; struct edid_info edid_info; struct ist_info ist_info; +#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ + defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) +EXPORT_SYMBOL(ist_info); +#endif struct e820map e820; extern void early_cpu_init(void); @@ -711,6 +740,15 @@ static void __init parse_cmdline_early (char ** cmdline_p) if (to != command_line) to--; if (!memcmp(from+7, "exactmap", 8)) { +#ifdef CONFIG_CRASH_DUMP + /* If we are doing a crash dump, we + * still need to know the real mem + * size before original memory map is + * reset. + */ + find_max_pfn(); + saved_max_pfn = max_pfn; +#endif from += 8+7; e820.nr_map = 0; userdef = 1; @@ -814,6 +852,44 @@ static void __init parse_cmdline_early (char ** cmdline_p) #endif /* CONFIG_X86_LOCAL_APIC */ #endif /* CONFIG_ACPI_BOOT */ +#ifdef CONFIG_X86_LOCAL_APIC + /* enable local APIC */ + else if (!memcmp(from, "lapic", 5)) + lapic_enable(); + + /* disable local APIC */ + else if (!memcmp(from, "nolapic", 6)) + lapic_disable(); +#endif /* CONFIG_X86_LOCAL_APIC */ + +#ifdef CONFIG_KEXEC + /* crashkernel=size@addr specifies the location to reserve for + * a crash kernel. By reserving this memory we guarantee + * that linux never set's it up as a DMA target. + * Useful for holding code to do something appropriate + * after a kernel panic. + */ + else if (!memcmp(from, "crashkernel=", 12)) { + unsigned long size, base; + size = memparse(from+12, &from); + if (*from == '@') { + base = memparse(from+1, &from); + /* FIXME: Do I want a sanity check + * to validate the memory range? + */ + crashk_res.start = base; + crashk_res.end = base + size - 1; + } + } +#endif +#ifdef CONFIG_CRASH_DUMP + /* elfcorehdr= specifies the location of elf core header + * stored by the crashed kernel. + */ + else if (!memcmp(from, "elfcorehdr=", 11)) + elfcorehdr_addr = memparse(from+11, &from); +#endif + /* * highmem=size forces highmem to be exactly 'size' bytes. * This works even on boxes that have no highmem otherwise. @@ -1022,7 +1098,7 @@ static void __init reserve_ebda_region(void) reserve_bootmem(addr, PAGE_SIZE); } -#ifndef CONFIG_DISCONTIGMEM +#ifndef CONFIG_NEED_MULTIPLE_NODES void __init setup_bootmem_allocator(void); static unsigned long __init setup_memory(void) { @@ -1072,9 +1148,9 @@ void __init zone_sizes_init(void) free_area_init(zones_size); } #else -extern unsigned long setup_memory(void); +extern unsigned long __init setup_memory(void); extern void zone_sizes_init(void); -#endif /* !CONFIG_DISCONTIGMEM */ +#endif /* !CONFIG_NEED_MULTIPLE_NODES */ void __init setup_bootmem_allocator(void) { @@ -1092,8 +1168,8 @@ void __init setup_bootmem_allocator(void) * the (very unlikely) case of us accidentally initializing the * bootmem allocator with an invalid RAM area. */ - reserve_bootmem(HIGH_MEMORY, (PFN_PHYS(min_low_pfn) + - bootmap_size + PAGE_SIZE-1) - (HIGH_MEMORY)); + reserve_bootmem(__PHYSICAL_START, (PFN_PHYS(min_low_pfn) + + bootmap_size + PAGE_SIZE-1) - (__PHYSICAL_START)); /* * reserve physical page 0 - it's a special BIOS page on many boxes, @@ -1149,6 +1225,11 @@ void __init setup_bootmem_allocator(void) } } #endif +#ifdef CONFIG_KEXEC + if (crashk_res.start != crashk_res.end) + reserve_bootmem(crashk_res.start, + crashk_res.end - crashk_res.start + 1); +#endif } /* @@ -1202,6 +1283,9 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat */ request_resource(res, code_resource); request_resource(res, data_resource); +#ifdef CONFIG_KEXEC + request_resource(res, &crashk_res); +#endif } } } @@ -1475,6 +1559,7 @@ void __init setup_arch(char **cmdline_p) #endif paging_init(); remapped_pgdat_init(); + sparse_init(); zone_sizes_init(); /* @@ -1502,11 +1587,13 @@ void __init setup_arch(char **cmdline_p) if (efi_enabled) efi_map_memmap(); +#ifdef CONFIG_ACPI_BOOT /* * Parse the ACPI tables for possible boot-time SMP configuration. */ acpi_boot_table_init(); acpi_boot_init(); +#endif #ifdef CONFIG_X86_LOCAL_APIC if (smp_found_config) diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c index ea46d028af0..89ef7adc63a 100644 --- a/arch/i386/kernel/signal.c +++ b/arch/i386/kernel/signal.c @@ -346,8 +346,8 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) extern void __user __kernel_sigreturn; extern void __user __kernel_rt_sigreturn; -static void setup_frame(int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs * regs) +static int setup_frame(int sig, struct k_sigaction *ka, + sigset_t *set, struct pt_regs * regs) { void __user *restorer; struct sigframe __user *frame; @@ -429,13 +429,14 @@ static void setup_frame(int sig, struct k_sigaction *ka, current->comm, current->pid, frame, regs->eip, frame->pretcode); #endif - return; + return 1; give_sigsegv: force_sigsegv(sig, current); + return 0; } -static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, +static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, struct pt_regs * regs) { void __user *restorer; @@ -522,20 +523,23 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, current->comm, current->pid, frame, regs->eip, frame->pretcode); #endif - return; + return 1; give_sigsegv: force_sigsegv(sig, current); + return 0; } /* * OK, we're invoking a handler */ -static void +static int handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, sigset_t *oldset, struct pt_regs * regs) { + int ret; + /* Are we from a system call? */ if (regs->orig_eax >= 0) { /* If so, check system call restarting.. */ @@ -569,17 +573,19 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, /* Set up the stack frame */ if (ka->sa.sa_flags & SA_SIGINFO) - setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(sig, ka, info, oldset, regs); else - setup_frame(sig, ka, oldset, regs); + ret = setup_frame(sig, ka, oldset, regs); - if (!(ka->sa.sa_flags & SA_NODEFER)) { + if (ret && !(ka->sa.sa_flags & SA_NODEFER)) { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); sigaddset(¤t->blocked,sig); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); } + + return ret; } /* @@ -599,13 +605,11 @@ int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset) * kernel mode. Just return without doing anything * if so. */ - if ((regs->xcs & 3) != 3) + if (!user_mode(regs)) return 1; - if (current->flags & PF_FREEZE) { - refrigerator(0); + if (try_to_freeze()) goto no_signal; - } if (!oldset) oldset = ¤t->blocked; @@ -618,12 +622,11 @@ int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset) * inside the kernel. */ if (unlikely(current->thread.debugreg[7])) { - loaddebug(¤t->thread, 7); + set_debugreg(current->thread.debugreg[7], 7); } /* Whee! Actually deliver the signal. */ - handle_signal(signr, &info, &ka, oldset, regs); - return 1; + return handle_signal(signr, &info, &ka, oldset, regs); } no_signal: diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index 6223c33ac91..cec4bde6716 100644 --- a/arch/i386/kernel/smp.c +++ b/arch/i386/kernel/smp.c @@ -19,6 +19,8 @@ #include <linux/mc146818rtc.h> #include <linux/cache.h> #include <linux/interrupt.h> +#include <linux/cpu.h> +#include <linux/module.h> #include <asm/mtrr.h> #include <asm/tlbflush.h> @@ -163,7 +165,7 @@ void send_IPI_mask_bitmask(cpumask_t cpumask, int vector) unsigned long flags; local_irq_save(flags); - + WARN_ON(mask & ~cpus_addr(cpu_online_map)[0]); /* * Wait for idle. */ @@ -345,21 +347,21 @@ out: static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, unsigned long va) { - cpumask_t tmp; /* * A couple of (to be removed) sanity checks: * - * - we do not send IPIs to not-yet booted CPUs. * - current CPU must not be in mask * - mask must exist :) */ BUG_ON(cpus_empty(cpumask)); - - cpus_and(tmp, cpumask, cpu_online_map); - BUG_ON(!cpus_equal(cpumask, tmp)); BUG_ON(cpu_isset(smp_processor_id(), cpumask)); BUG_ON(!mm); + /* If a CPU which we ran on has gone down, OK. */ + cpus_and(cpumask, cpumask, cpu_online_map); + if (cpus_empty(cpumask)) + return; + /* * i'm not happy about this global shared spinlock in the * MM hot path, but we'll see how contended it is. @@ -452,6 +454,7 @@ void flush_tlb_page(struct vm_area_struct * vma, unsigned long va) preempt_enable(); } +EXPORT_SYMBOL(flush_tlb_page); static void do_flush_tlb_all(void* info) { @@ -474,6 +477,7 @@ void flush_tlb_all(void) */ void smp_send_reschedule(int cpu) { + WARN_ON(cpu_is_offline(cpu)); send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR); } @@ -491,6 +495,16 @@ struct call_data_struct { int wait; }; +void lock_ipi_call_lock(void) +{ + spin_lock_irq(&call_lock); +} + +void unlock_ipi_call_lock(void) +{ + spin_unlock_irq(&call_lock); +} + static struct call_data_struct * call_data; /* @@ -514,10 +528,15 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic, */ { struct call_data_struct data; - int cpus = num_online_cpus()-1; + int cpus; - if (!cpus) + /* Holding any lock stops cpus from going down. */ + spin_lock(&call_lock); + cpus = num_online_cpus() - 1; + if (!cpus) { + spin_unlock(&call_lock); return 0; + } /* Can deadlock when called with interrupts disabled */ WARN_ON(irqs_disabled()); @@ -529,7 +548,6 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic, if (wait) atomic_set(&data.finished, 0); - spin_lock(&call_lock); call_data = &data; mb(); @@ -547,6 +565,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic, return 0; } +EXPORT_SYMBOL(smp_call_function); static void stop_this_cpu (void * dummy) { diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index 35bfe138cb1..d66bf489a2e 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -44,6 +44,9 @@ #include <linux/smp_lock.h> #include <linux/irq.h> #include <linux/bootmem.h> +#include <linux/notifier.h> +#include <linux/cpu.h> +#include <linux/percpu.h> #include <linux/delay.h> #include <linux/mc146818rtc.h> @@ -56,24 +59,46 @@ #include <smpboot_hooks.h> /* Set if we find a B stepping CPU */ -static int __initdata smp_b_stepping; +static int __devinitdata smp_b_stepping; /* Number of siblings per CPU package */ int smp_num_siblings = 1; -int phys_proc_id[NR_CPUS]; /* Package ID of each logical CPU */ +#ifdef CONFIG_X86_HT +EXPORT_SYMBOL(smp_num_siblings); +#endif + +/* Package ID of each logical CPU */ +int phys_proc_id[NR_CPUS] = {[0 ... NR_CPUS-1] = BAD_APICID}; EXPORT_SYMBOL(phys_proc_id); -int cpu_core_id[NR_CPUS]; /* Core ID of each logical CPU */ + +/* Core ID of each logical CPU */ +int cpu_core_id[NR_CPUS] = {[0 ... NR_CPUS-1] = BAD_APICID}; EXPORT_SYMBOL(cpu_core_id); +cpumask_t cpu_sibling_map[NR_CPUS]; +EXPORT_SYMBOL(cpu_sibling_map); + +cpumask_t cpu_core_map[NR_CPUS]; +EXPORT_SYMBOL(cpu_core_map); + /* bitmap of online cpus */ cpumask_t cpu_online_map; +EXPORT_SYMBOL(cpu_online_map); cpumask_t cpu_callin_map; cpumask_t cpu_callout_map; +EXPORT_SYMBOL(cpu_callout_map); static cpumask_t smp_commenced_mask; +/* TSC's upper 32 bits can't be written in eariler CPU (before prescott), there + * is no way to resync one AP against BP. TBD: for prescott and above, we + * should use IA64's algorithm + */ +static int __devinitdata tsc_sync_disabled; + /* Per CPU bogomips and other parameters */ struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned; +EXPORT_SYMBOL(cpu_data); u8 x86_cpu_to_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = 0xff }; @@ -90,13 +115,16 @@ static int trampoline_exec; static void map_cpu_to_logical_apicid(void); +/* State of each CPU. */ +DEFINE_PER_CPU(int, cpu_state) = { 0 }; + /* * Currently trivial. Write the real->protected mode * bootstrap into the page concerned. The caller * has made sure it's suitably aligned. */ -static unsigned long __init setup_trampoline(void) +static unsigned long __devinit setup_trampoline(void) { memcpy(trampoline_base, trampoline_data, trampoline_end - trampoline_data); return virt_to_phys(trampoline_base); @@ -126,7 +154,7 @@ void __init smp_alloc_memory(void) * a given CPU */ -static void __init smp_store_cpu_info(int id) +static void __devinit smp_store_cpu_info(int id) { struct cpuinfo_x86 *c = cpu_data + id; @@ -199,7 +227,7 @@ static void __init synchronize_tsc_bp (void) unsigned long long t0; unsigned long long sum, avg; long long delta; - unsigned long one_usec; + unsigned int one_usec; int buggy = 0; printk(KERN_INFO "checking TSC synchronization across %u CPUs: ", num_booting_cpus()); @@ -320,7 +348,7 @@ extern void calibrate_delay(void); static atomic_t init_deasserted; -static void __init smp_callin(void) +static void __devinit smp_callin(void) { int cpuid, phys_id; unsigned long timeout; @@ -405,16 +433,48 @@ static void __init smp_callin(void) /* * Synchronize the TSC with the BP */ - if (cpu_has_tsc && cpu_khz) + if (cpu_has_tsc && cpu_khz && !tsc_sync_disabled) synchronize_tsc_ap(); } static int cpucount; +static inline void +set_cpu_sibling_map(int cpu) +{ + int i; + + if (smp_num_siblings > 1) { + for (i = 0; i < NR_CPUS; i++) { + if (!cpu_isset(i, cpu_callout_map)) + continue; + if (cpu_core_id[cpu] == cpu_core_id[i]) { + cpu_set(i, cpu_sibling_map[cpu]); + cpu_set(cpu, cpu_sibling_map[i]); + } + } + } else { + cpu_set(cpu, cpu_sibling_map[cpu]); + } + + if (current_cpu_data.x86_num_cores > 1) { + for (i = 0; i < NR_CPUS; i++) { + if (!cpu_isset(i, cpu_callout_map)) + continue; + if (phys_proc_id[cpu] == phys_proc_id[i]) { + cpu_set(i, cpu_core_map[cpu]); + cpu_set(cpu, cpu_core_map[i]); + } + } + } else { + cpu_core_map[cpu] = cpu_sibling_map[cpu]; + } +} + /* * Activate a secondary processor. */ -static void __init start_secondary(void *unused) +static void __devinit start_secondary(void *unused) { /* * Dont put anything before smp_callin(), SMP @@ -437,7 +497,23 @@ static void __init start_secondary(void *unused) * the local TLBs too. */ local_flush_tlb(); + + /* This must be done before setting cpu_online_map */ + set_cpu_sibling_map(raw_smp_processor_id()); + wmb(); + + /* + * We need to hold call_lock, so there is no inconsistency + * between the time smp_call_function() determines number of + * IPI receipients, and the time when the determination is made + * for which cpus receive the IPI. Holding this + * lock helps us to not include this cpu in a currently in progress + * smp_call_function(). + */ + lock_ipi_call_lock(); cpu_set(smp_processor_id(), cpu_online_map); + unlock_ipi_call_lock(); + per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE; /* We can take interrupts now: we're officially "up". */ local_irq_enable(); @@ -452,7 +528,7 @@ static void __init start_secondary(void *unused) * from the task structure * This function must not return. */ -void __init initialize_secondary(void) +void __devinit initialize_secondary(void) { /* * We don't actually need to load the full TSS, @@ -566,7 +642,7 @@ static inline void __inquire_remote_apic(int apicid) * INIT, INIT, STARTUP sequence will reset the chip hard for us, and this * won't ... remember to clear down the APIC, etc later. */ -static int __init +static int __devinit wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip) { unsigned long send_status = 0, accept_status = 0; @@ -612,7 +688,7 @@ wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip) #endif /* WAKE_SECONDARY_VIA_NMI */ #ifdef WAKE_SECONDARY_VIA_INIT -static int __init +static int __devinit wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) { unsigned long send_status = 0, accept_status = 0; @@ -747,8 +823,43 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip) #endif /* WAKE_SECONDARY_VIA_INIT */ extern cpumask_t cpu_initialized; +static inline int alloc_cpu_id(void) +{ + cpumask_t tmp_map; + int cpu; + cpus_complement(tmp_map, cpu_present_map); + cpu = first_cpu(tmp_map); + if (cpu >= NR_CPUS) + return -ENODEV; + return cpu; +} + +#ifdef CONFIG_HOTPLUG_CPU +static struct task_struct * __devinitdata cpu_idle_tasks[NR_CPUS]; +static inline struct task_struct * alloc_idle_task(int cpu) +{ + struct task_struct *idle; + + if ((idle = cpu_idle_tasks[cpu]) != NULL) { + /* initialize thread_struct. we really want to avoid destroy + * idle tread + */ + idle->thread.esp = (unsigned long)(((struct pt_regs *) + (THREAD_SIZE + (unsigned long) idle->thread_info)) - 1); + init_idle(idle, cpu); + return idle; + } + idle = fork_idle(cpu); -static int __init do_boot_cpu(int apicid) + if (!IS_ERR(idle)) + cpu_idle_tasks[cpu] = idle; + return idle; +} +#else +#define alloc_idle_task(cpu) fork_idle(cpu) +#endif + +static int __devinit do_boot_cpu(int apicid, int cpu) /* * NOTE - on most systems this is a PHYSICAL apic ID, but on multiquad * (ie clustered apic addressing mode), this is a LOGICAL apic ID. @@ -757,16 +868,17 @@ static int __init do_boot_cpu(int apicid) { struct task_struct *idle; unsigned long boot_error; - int timeout, cpu; + int timeout; unsigned long start_eip; unsigned short nmi_high = 0, nmi_low = 0; - cpu = ++cpucount; + ++cpucount; + /* * We can't use kernel_thread since we must avoid to * reschedule the child. */ - idle = fork_idle(cpu); + idle = alloc_idle_task(cpu); if (IS_ERR(idle)) panic("failed fork for CPU %d", cpu); idle->thread.eip = (unsigned long) start_secondary; @@ -833,13 +945,16 @@ static int __init do_boot_cpu(int apicid) inquire_remote_apic(apicid); } } - x86_cpu_to_apicid[cpu] = apicid; + if (boot_error) { /* Try to put things back the way they were before ... */ unmap_cpu_to_logical_apicid(cpu); cpu_clear(cpu, cpu_callout_map); /* was set here (do_boot_cpu()) */ cpu_clear(cpu, cpu_initialized); /* was set by cpu_init() */ cpucount--; + } else { + x86_cpu_to_apicid[cpu] = apicid; + cpu_set(cpu, cpu_present_map); } /* mark "stuck" area as not stuck */ @@ -848,6 +963,75 @@ static int __init do_boot_cpu(int apicid) return boot_error; } +#ifdef CONFIG_HOTPLUG_CPU +void cpu_exit_clear(void) +{ + int cpu = raw_smp_processor_id(); + + idle_task_exit(); + + cpucount --; + cpu_uninit(); + irq_ctx_exit(cpu); + + cpu_clear(cpu, cpu_callout_map); + cpu_clear(cpu, cpu_callin_map); + cpu_clear(cpu, cpu_present_map); + + cpu_clear(cpu, smp_commenced_mask); + unmap_cpu_to_logical_apicid(cpu); +} + +struct warm_boot_cpu_info { + struct completion *complete; + int apicid; + int cpu; +}; + +static void __devinit do_warm_boot_cpu(void *p) +{ + struct warm_boot_cpu_info *info = p; + do_boot_cpu(info->apicid, info->cpu); + complete(info->complete); +} + +int __devinit smp_prepare_cpu(int cpu) +{ + DECLARE_COMPLETION(done); + struct warm_boot_cpu_info info; + struct work_struct task; + int apicid, ret; + + lock_cpu_hotplug(); + apicid = x86_cpu_to_apicid[cpu]; + if (apicid == BAD_APICID) { + ret = -ENODEV; + goto exit; + } + + info.complete = &done; + info.apicid = apicid; + info.cpu = cpu; + INIT_WORK(&task, do_warm_boot_cpu, &info); + + tsc_sync_disabled = 1; + + /* init low mem mapping */ + memcpy(swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS, + sizeof(swapper_pg_dir[0]) * KERNEL_PGD_PTRS); + flush_tlb_all(); + schedule_work(&task); + wait_for_completion(&done); + + tsc_sync_disabled = 0; + zap_low_mappings(); + ret = 0; +exit: + unlock_cpu_hotplug(); + return ret; +} +#endif + static void smp_tune_scheduling (void) { unsigned long cachesize; /* kB */ @@ -885,10 +1069,9 @@ static void smp_tune_scheduling (void) static int boot_cpu_logical_apicid; /* Where the IO area was mapped on multiquad, always 0 otherwise */ void *xquad_portio; - -cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned; -cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned; -EXPORT_SYMBOL(cpu_core_map); +#ifdef CONFIG_X86_NUMAQ +EXPORT_SYMBOL(xquad_portio); +#endif static void __init smp_boot_cpus(unsigned int max_cpus) { @@ -1001,7 +1184,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus) if (max_cpus <= cpucount+1) continue; - if (do_boot_cpu(apicid)) + if (((cpu = alloc_cpu_id()) <= 0) || do_boot_cpu(apicid, cpu)) printk("CPU #%d not responding - cannot use it.\n", apicid); else @@ -1053,42 +1236,8 @@ static void __init smp_boot_cpus(unsigned int max_cpus) cpus_clear(cpu_core_map[cpu]); } - for (cpu = 0; cpu < NR_CPUS; cpu++) { - struct cpuinfo_x86 *c = cpu_data + cpu; - int siblings = 0; - int i; - if (!cpu_isset(cpu, cpu_callout_map)) - continue; - - if (smp_num_siblings > 1) { - for (i = 0; i < NR_CPUS; i++) { - if (!cpu_isset(i, cpu_callout_map)) - continue; - if (cpu_core_id[cpu] == cpu_core_id[i]) { - siblings++; - cpu_set(i, cpu_sibling_map[cpu]); - } - } - } else { - siblings++; - cpu_set(cpu, cpu_sibling_map[cpu]); - } - - if (siblings != smp_num_siblings) - printk(KERN_WARNING "WARNING: %d siblings found for CPU%d, should be %d\n", siblings, cpu, smp_num_siblings); - - if (c->x86_num_cores > 1) { - for (i = 0; i < NR_CPUS; i++) { - if (!cpu_isset(i, cpu_callout_map)) - continue; - if (phys_proc_id[cpu] == phys_proc_id[i]) { - cpu_set(i, cpu_core_map[cpu]); - } - } - } else { - cpu_core_map[cpu] = cpu_sibling_map[cpu]; - } - } + cpu_set(0, cpu_sibling_map[0]); + cpu_set(0, cpu_core_map[0]); smpboot_setup_io_apic(); @@ -1105,6 +1254,9 @@ static void __init smp_boot_cpus(unsigned int max_cpus) who understands all this stuff should rewrite it properly. --RR 15/Jul/02 */ void __init smp_prepare_cpus(unsigned int max_cpus) { + smp_commenced_mask = cpumask_of_cpu(0); + cpu_callin_map = cpumask_of_cpu(0); + mb(); smp_boot_cpus(max_cpus); } @@ -1112,23 +1264,98 @@ void __devinit smp_prepare_boot_cpu(void) { cpu_set(smp_processor_id(), cpu_online_map); cpu_set(smp_processor_id(), cpu_callout_map); + cpu_set(smp_processor_id(), cpu_present_map); + per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE; } -int __devinit __cpu_up(unsigned int cpu) +#ifdef CONFIG_HOTPLUG_CPU +static void +remove_siblinginfo(int cpu) { - /* This only works at boot for x86. See "rewrite" above. */ - if (cpu_isset(cpu, smp_commenced_mask)) { - local_irq_enable(); - return -ENOSYS; + int sibling; + + for_each_cpu_mask(sibling, cpu_sibling_map[cpu]) + cpu_clear(cpu, cpu_sibling_map[sibling]); + for_each_cpu_mask(sibling, cpu_core_map[cpu]) + cpu_clear(cpu, cpu_core_map[sibling]); + cpus_clear(cpu_sibling_map[cpu]); + cpus_clear(cpu_core_map[cpu]); + phys_proc_id[cpu] = BAD_APICID; + cpu_core_id[cpu] = BAD_APICID; +} + +int __cpu_disable(void) +{ + cpumask_t map = cpu_online_map; + int cpu = smp_processor_id(); + + /* + * Perhaps use cpufreq to drop frequency, but that could go + * into generic code. + * + * We won't take down the boot processor on i386 due to some + * interrupts only being able to be serviced by the BSP. + * Especially so if we're not using an IOAPIC -zwane + */ + if (cpu == 0) + return -EBUSY; + + /* We enable the timer again on the exit path of the death loop */ + disable_APIC_timer(); + /* Allow any queued timer interrupts to get serviced */ + local_irq_enable(); + mdelay(1); + local_irq_disable(); + + remove_siblinginfo(cpu); + + cpu_clear(cpu, map); + fixup_irqs(map); + /* It's now safe to remove this processor from the online map */ + cpu_clear(cpu, cpu_online_map); + return 0; +} + +void __cpu_die(unsigned int cpu) +{ + /* We don't do anything here: idle task is faking death itself. */ + unsigned int i; + + for (i = 0; i < 10; i++) { + /* They ack this in play_dead by setting CPU_DEAD */ + if (per_cpu(cpu_state, cpu) == CPU_DEAD) { + printk ("CPU %d is now offline\n", cpu); + return; + } + current->state = TASK_UNINTERRUPTIBLE; + schedule_timeout(HZ/10); } + printk(KERN_ERR "CPU %u didn't die...\n", cpu); +} +#else /* ... !CONFIG_HOTPLUG_CPU */ +int __cpu_disable(void) +{ + return -ENOSYS; +} +void __cpu_die(unsigned int cpu) +{ + /* We said "no" in __cpu_disable */ + BUG(); +} +#endif /* CONFIG_HOTPLUG_CPU */ + +int __devinit __cpu_up(unsigned int cpu) +{ /* In case one didn't come up */ if (!cpu_isset(cpu, cpu_callin_map)) { + printk(KERN_DEBUG "skipping cpu%d, didn't come online\n", cpu); local_irq_enable(); return -EIO; } local_irq_enable(); + per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; /* Unleash the CPU! */ cpu_set(cpu, smp_commenced_mask); while (!cpu_isset(cpu, cpu_online_map)) @@ -1142,10 +1369,12 @@ void __init smp_cpus_done(unsigned int max_cpus) setup_ioapic_dest(); #endif zap_low_mappings(); +#ifndef CONFIG_HOTPLUG_CPU /* * Disable executability of the SMP trampoline: */ set_kernel_exec((unsigned long)trampoline_base, trampoline_exec); +#endif } void __init smp_intr_init(void) diff --git a/arch/i386/kernel/syscall_table.S b/arch/i386/kernel/syscall_table.S index 6cd1ed311f0..442a6e937b1 100644 --- a/arch/i386/kernel/syscall_table.S +++ b/arch/i386/kernel/syscall_table.S @@ -251,7 +251,7 @@ ENTRY(sys_call_table) .long sys_io_submit .long sys_io_cancel .long sys_fadvise64 /* 250 */ - .long sys_ni_syscall + .long sys_set_zone_reclaim .long sys_exit_group .long sys_lookup_dcookie .long sys_epoll_create @@ -283,7 +283,7 @@ ENTRY(sys_call_table) .long sys_mq_timedreceive /* 280 */ .long sys_mq_notify .long sys_mq_getsetattr - .long sys_ni_syscall /* reserved for kexec */ + .long sys_kexec_load .long sys_waitid .long sys_ni_syscall /* 285 */ /* available */ .long sys_add_key diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c index 960d8bd137d..0bada1870bd 100644 --- a/arch/i386/kernel/sysenter.c +++ b/arch/i386/kernel/sysenter.c @@ -21,11 +21,16 @@ extern asmlinkage void sysenter_entry(void); -void enable_sep_cpu(void *info) +void enable_sep_cpu(void) { int cpu = get_cpu(); struct tss_struct *tss = &per_cpu(init_tss, cpu); + if (!boot_cpu_has(X86_FEATURE_SEP)) { + put_cpu(); + return; + } + tss->ss1 = __KERNEL_CS; tss->esp1 = sizeof(struct tss_struct) + (unsigned long) tss; wrmsr(MSR_IA32_SYSENTER_CS, __KERNEL_CS, 0); @@ -41,7 +46,7 @@ void enable_sep_cpu(void *info) extern const char vsyscall_int80_start, vsyscall_int80_end; extern const char vsyscall_sysenter_start, vsyscall_sysenter_end; -static int __init sysenter_setup(void) +int __init sysenter_setup(void) { void *page = (void *)get_zeroed_page(GFP_ATOMIC); @@ -58,8 +63,5 @@ static int __init sysenter_setup(void) &vsyscall_sysenter_start, &vsyscall_sysenter_end - &vsyscall_sysenter_start); - on_each_cpu(enable_sep_cpu, NULL, 1, 1); return 0; } - -__initcall(sysenter_setup); diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c index a0dcb7c87c3..e68d9fdb075 100644 --- a/arch/i386/kernel/time.c +++ b/arch/i386/kernel/time.c @@ -77,11 +77,13 @@ u64 jiffies_64 = INITIAL_JIFFIES; EXPORT_SYMBOL(jiffies_64); -unsigned long cpu_khz; /* Detected as we calibrate the TSC */ +unsigned int cpu_khz; /* Detected as we calibrate the TSC */ +EXPORT_SYMBOL(cpu_khz); extern unsigned long wall_jiffies; DEFINE_SPINLOCK(rtc_lock); +EXPORT_SYMBOL(rtc_lock); DEFINE_SPINLOCK(i8253_lock); EXPORT_SYMBOL(i8253_lock); @@ -324,6 +326,8 @@ unsigned long get_cmos_time(void) return retval; } +EXPORT_SYMBOL(get_cmos_time); + static void sync_cmos_clock(unsigned long dummy); static struct timer_list sync_cmos_timer = diff --git a/arch/i386/kernel/time_hpet.c b/arch/i386/kernel/time_hpet.c index 10a0cbb88e7..658c0629ba6 100644 --- a/arch/i386/kernel/time_hpet.c +++ b/arch/i386/kernel/time_hpet.c @@ -50,7 +50,7 @@ static void hpet_writel(unsigned long d, unsigned long a) * comparator value and continue. Next tick can be caught by checking * for a change in the comparator value. Used in apic.c. */ -static void __init wait_hpet_tick(void) +static void __devinit wait_hpet_tick(void) { unsigned int start_cmp_val, end_cmp_val; diff --git a/arch/i386/kernel/timers/common.c b/arch/i386/kernel/timers/common.c index f7f90005e22..8163fe0cf1f 100644 --- a/arch/i386/kernel/timers/common.c +++ b/arch/i386/kernel/timers/common.c @@ -6,6 +6,7 @@ #include <linux/timex.h> #include <linux/errno.h> #include <linux/jiffies.h> +#include <linux/module.h> #include <asm/io.h> #include <asm/timer.h> @@ -24,7 +25,7 @@ #define CALIBRATE_TIME (5 * 1000020/HZ) -unsigned long __init calibrate_tsc(void) +unsigned long calibrate_tsc(void) { mach_prepare_counter(); @@ -85,7 +86,7 @@ bad_ctc: #define CALIBRATE_CNT_HPET (5 * hpet_tick) #define CALIBRATE_TIME_HPET (5 * KERNEL_TICK_USEC) -unsigned long __init calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr) +unsigned long __devinit calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr) { unsigned long tsc_startlow, tsc_starthigh; unsigned long tsc_endlow, tsc_endhigh; @@ -138,8 +139,17 @@ bad_calibration: } #endif + +unsigned long read_timer_tsc(void) +{ + unsigned long retval; + rdtscl(retval); + return retval; +} + + /* calculate cpu_khz */ -void __init init_cpu_khz(void) +void init_cpu_khz(void) { if (cpu_has_tsc) { unsigned long tsc_quotient = calibrate_tsc(); @@ -153,8 +163,10 @@ void __init init_cpu_khz(void) :"=a" (cpu_khz), "=d" (edx) :"r" (tsc_quotient), "0" (eax), "1" (edx)); - printk("Detected %lu.%03lu MHz processor.\n", cpu_khz / 1000, cpu_khz % 1000); + printk("Detected %u.%03u MHz processor.\n", + cpu_khz / 1000, cpu_khz % 1000); } } } } + diff --git a/arch/i386/kernel/timers/timer.c b/arch/i386/kernel/timers/timer.c index a3d6a288088..7e39ed8e33f 100644 --- a/arch/i386/kernel/timers/timer.c +++ b/arch/i386/kernel/timers/timer.c @@ -64,3 +64,12 @@ struct timer_opts* __init select_timer(void) panic("select_timer: Cannot find a suitable timer\n"); return NULL; } + +int read_current_timer(unsigned long *timer_val) +{ + if (cur_timer->read_timer) { + *timer_val = cur_timer->read_timer(); + return 0; + } + return -1; +} diff --git a/arch/i386/kernel/timers/timer_hpet.c b/arch/i386/kernel/timers/timer_hpet.c index f778f471a09..d766e0963ac 100644 --- a/arch/i386/kernel/timers/timer_hpet.c +++ b/arch/i386/kernel/timers/timer_hpet.c @@ -158,7 +158,7 @@ static int __init init_hpet(char* override) { unsigned long eax=0, edx=1000; ASM_DIV64_REG(cpu_khz, edx, tsc_quotient, eax, edx); - printk("Detected %lu.%03lu MHz processor.\n", + printk("Detected %u.%03u MHz processor.\n", cpu_khz / 1000, cpu_khz % 1000); } set_cyc2ns_scale(cpu_khz/1000); @@ -186,6 +186,7 @@ static struct timer_opts timer_hpet = { .get_offset = get_offset_hpet, .monotonic_clock = monotonic_clock_hpet, .delay = delay_hpet, + .read_timer = read_timer_tsc, }; struct init_timer_opts __initdata timer_hpet_init = { diff --git a/arch/i386/kernel/timers/timer_pm.c b/arch/i386/kernel/timers/timer_pm.c index d77f22030fe..4ef20e66349 100644 --- a/arch/i386/kernel/timers/timer_pm.c +++ b/arch/i386/kernel/timers/timer_pm.c @@ -246,6 +246,7 @@ static struct timer_opts timer_pmtmr = { .get_offset = get_offset_pmtmr, .monotonic_clock = monotonic_clock_pmtmr, .delay = delay_pmtmr, + .read_timer = read_timer_tsc, }; struct init_timer_opts __initdata timer_pmtmr_init = { diff --git a/arch/i386/kernel/timers/timer_tsc.c b/arch/i386/kernel/timers/timer_tsc.c index 7926d967be0..f46e625bab6 100644 --- a/arch/i386/kernel/timers/timer_tsc.c +++ b/arch/i386/kernel/timers/timer_tsc.c @@ -33,7 +33,7 @@ static struct timer_opts timer_tsc; static inline void cpufreq_delayed_get(void); -int tsc_disable __initdata = 0; +int tsc_disable __devinitdata = 0; extern spinlock_t i8253_lock; @@ -256,7 +256,7 @@ static unsigned long loops_per_jiffy_ref = 0; #ifndef CONFIG_SMP static unsigned long fast_gettimeoffset_ref = 0; -static unsigned long cpu_khz_ref = 0; +static unsigned int cpu_khz_ref = 0; #endif static int @@ -320,6 +320,26 @@ core_initcall(cpufreq_tsc); static inline void cpufreq_delayed_get(void) { return; } #endif +int recalibrate_cpu_khz(void) +{ +#ifndef CONFIG_SMP + unsigned int cpu_khz_old = cpu_khz; + + if (cpu_has_tsc) { + init_cpu_khz(); + cpu_data[0].loops_per_jiffy = + cpufreq_scale(cpu_data[0].loops_per_jiffy, + cpu_khz_old, + cpu_khz); + return 0; + } else + return -ENODEV; +#else + return -ENODEV; +#endif +} +EXPORT_SYMBOL(recalibrate_cpu_khz); + static void mark_offset_tsc(void) { unsigned long lost,delay; @@ -514,7 +534,8 @@ static int __init init_tsc(char* override) :"=a" (cpu_khz), "=d" (edx) :"r" (tsc_quotient), "0" (eax), "1" (edx)); - printk("Detected %lu.%03lu MHz processor.\n", cpu_khz / 1000, cpu_khz % 1000); + printk("Detected %u.%03u MHz processor.\n", + cpu_khz / 1000, cpu_khz % 1000); } set_cyc2ns_scale(cpu_khz/1000); return 0; @@ -552,6 +573,7 @@ static struct timer_opts timer_tsc = { .get_offset = get_offset_tsc, .monotonic_clock = monotonic_clock_tsc, .delay = delay_tsc, + .read_timer = read_timer_tsc, }; struct init_timer_opts __initdata timer_tsc_init = { diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index 00c63419c06..a61f33d06ea 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -27,6 +27,7 @@ #include <linux/ptrace.h> #include <linux/utsname.h> #include <linux/kprobes.h> +#include <linux/kexec.h> #ifdef CONFIG_EISA #include <linux/ioport.h> @@ -104,6 +105,7 @@ int register_die_notifier(struct notifier_block *nb) spin_unlock_irqrestore(&die_notifier_lock, flags); return err; } +EXPORT_SYMBOL(register_die_notifier); static inline int valid_stack_ptr(struct thread_info *tinfo, void *p) { @@ -209,7 +211,7 @@ void show_registers(struct pt_regs *regs) esp = (unsigned long) (®s->esp); ss = __KERNEL_DS; - if (regs->xcs & 3) { + if (user_mode(regs)) { in_kernel = 0; esp = regs->esp; ss = regs->xss & 0xffff; @@ -233,22 +235,22 @@ void show_registers(struct pt_regs *regs) * time of the fault.. */ if (in_kernel) { - u8 *eip; + u8 __user *eip; printk("\nStack: "); show_stack(NULL, (unsigned long*)esp); printk("Code: "); - eip = (u8 *)regs->eip - 43; + eip = (u8 __user *)regs->eip - 43; for (i = 0; i < 64; i++, eip++) { unsigned char c; - if (eip < (u8 *)PAGE_OFFSET || __get_user(c, eip)) { + if (eip < (u8 __user *)PAGE_OFFSET || __get_user(c, eip)) { printk(" Bad EIP value."); break; } - if (eip == (u8 *)regs->eip) + if (eip == (u8 __user *)regs->eip) printk("<%02x> ", c); else printk("%02x ", c); @@ -265,20 +267,20 @@ static void handle_BUG(struct pt_regs *regs) char c; unsigned long eip; - if (regs->xcs & 3) + if (user_mode(regs)) goto no_bug; /* Not in kernel */ eip = regs->eip; if (eip < PAGE_OFFSET) goto no_bug; - if (__get_user(ud2, (unsigned short *)eip)) + if (__get_user(ud2, (unsigned short __user *)eip)) goto no_bug; if (ud2 != 0x0b0f) goto no_bug; - if (__get_user(line, (unsigned short *)(eip + 2))) + if (__get_user(line, (unsigned short __user *)(eip + 2))) goto bug; - if (__get_user(file, (char **)(eip + 4)) || + if (__get_user(file, (char * __user *)(eip + 4)) || (unsigned long)file < PAGE_OFFSET || __get_user(c, file)) file = "<bad filename>"; @@ -293,6 +295,9 @@ bug: printk("Kernel BUG\n"); } +/* This is gone through when something in the kernel + * has done something bad and is about to be terminated. +*/ void die(const char * str, struct pt_regs * regs, long err) { static struct { @@ -306,7 +311,7 @@ void die(const char * str, struct pt_regs * regs, long err) }; static int die_counter; - if (die.lock_owner != _smp_processor_id()) { + if (die.lock_owner != raw_smp_processor_id()) { console_verbose(); spin_lock_irq(&die.lock); die.lock_owner = smp_processor_id(); @@ -340,6 +345,10 @@ void die(const char * str, struct pt_regs * regs, long err) bust_spinlocks(0); die.lock_owner = -1; spin_unlock_irq(&die.lock); + + if (kexec_should_crash(current)) + crash_kexec(regs); + if (in_interrupt()) panic("Fatal exception in interrupt"); @@ -353,26 +362,27 @@ void die(const char * str, struct pt_regs * regs, long err) static inline void die_if_kernel(const char * str, struct pt_regs * regs, long err) { - if (!(regs->eflags & VM_MASK) && !(3 & regs->xcs)) + if (!user_mode_vm(regs)) die(str, regs, err); } static void do_trap(int trapnr, int signr, char *str, int vm86, struct pt_regs * regs, long error_code, siginfo_t *info) { + struct task_struct *tsk = current; + tsk->thread.error_code = error_code; + tsk->thread.trap_no = trapnr; + if (regs->eflags & VM_MASK) { if (vm86) goto vm86_trap; goto trap_signal; } - if (!(regs->xcs & 3)) + if (!user_mode(regs)) goto kernel_trap; trap_signal: { - struct task_struct *tsk = current; - tsk->thread.error_code = error_code; - tsk->thread.trap_no = trapnr; if (info) force_sig_info(signr, info, tsk); else @@ -485,10 +495,13 @@ fastcall void do_general_protection(struct pt_regs * regs, long error_code) } put_cpu(); + current->thread.error_code = error_code; + current->thread.trap_no = 13; + if (regs->eflags & VM_MASK) goto gp_in_vm86; - if (!(regs->xcs & 3)) + if (!user_mode(regs)) goto gp_in_kernel; current->thread.error_code = error_code; @@ -569,6 +582,15 @@ void die_nmi (struct pt_regs *regs, const char *msg) console_silent(); spin_unlock(&nmi_print_lock); bust_spinlocks(0); + + /* If we are in kernel we are probably nested up pretty bad + * and might aswell get out now while we still can. + */ + if (!user_mode(regs)) { + current->thread.trap_no = 2; + crash_kexec(regs); + } + do_exit(SIGSEGV); } @@ -624,6 +646,14 @@ fastcall void do_nmi(struct pt_regs * regs, long error_code) nmi_enter(); cpu = smp_processor_id(); + +#ifdef CONFIG_HOTPLUG_CPU + if (!cpu_online(cpu)) { + nmi_exit(); + return; + } +#endif + ++nmi_count(cpu); if (!nmi_callback(regs, cpu)) @@ -636,11 +666,13 @@ void set_nmi_callback(nmi_callback_t callback) { nmi_callback = callback; } +EXPORT_SYMBOL_GPL(set_nmi_callback); void unset_nmi_callback(void) { nmi_callback = dummy_nmi_callback; } +EXPORT_SYMBOL_GPL(unset_nmi_callback); #ifdef CONFIG_KPROBES fastcall void do_int3(struct pt_regs *regs, long error_code) @@ -682,7 +714,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code) unsigned int condition; struct task_struct *tsk = current; - __asm__ __volatile__("movl %%db6,%0" : "=r" (condition)); + get_debugreg(condition, 6); if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code, SIGTRAP) == NOTIFY_STOP) @@ -713,7 +745,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code) * check for kernel mode by just checking the CPL * of CS. */ - if ((regs->xcs & 3) == 0) + if (!user_mode(regs)) goto clear_TF_reenable; } @@ -724,9 +756,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code) * the signal is delivered. */ clear_dr7: - __asm__("movl %0,%%db7" - : /* no output */ - : "r" (0)); + set_debugreg(0, 7); return; debug_vm86: @@ -871,9 +901,9 @@ fastcall void do_simd_coprocessor_error(struct pt_regs * regs, error_code); return; } - die_if_kernel("cache flush denied", regs, error_code); current->thread.trap_no = 19; current->thread.error_code = error_code; + die_if_kernel("cache flush denied", regs, error_code); force_sig(SIGSEGV, current); } } diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index e0512cc8bea..7e01a528a83 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -2,20 +2,23 @@ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>; */ +#define LOAD_OFFSET __PAGE_OFFSET + #include <asm-generic/vmlinux.lds.h> #include <asm/thread_info.h> #include <asm/page.h> OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386") OUTPUT_ARCH(i386) -ENTRY(startup_32) +ENTRY(phys_startup_32) jiffies = jiffies_64; SECTIONS { - . = __PAGE_OFFSET + 0x100000; + . = __KERNEL_START; + phys_startup_32 = startup_32 - LOAD_OFFSET; /* read-only */ _text = .; /* Text and read-only data */ - .text : { + .text : AT(ADDR(.text) - LOAD_OFFSET) { *(.text) SCHED_TEXT LOCK_TEXT @@ -27,49 +30,55 @@ SECTIONS . = ALIGN(16); /* Exception table */ __start___ex_table = .; - __ex_table : { *(__ex_table) } + __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) } __stop___ex_table = .; RODATA /* writeable */ - .data : { /* Data */ + .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */ *(.data) CONSTRUCTORS } . = ALIGN(4096); __nosave_begin = .; - .data_nosave : { *(.data.nosave) } + .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) } . = ALIGN(4096); __nosave_end = .; . = ALIGN(4096); - .data.page_aligned : { *(.data.idt) } + .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) { + *(.data.idt) + } . = ALIGN(32); - .data.cacheline_aligned : { *(.data.cacheline_aligned) } + .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) { + *(.data.cacheline_aligned) + } _edata = .; /* End of data section */ . = ALIGN(THREAD_SIZE); /* init_task */ - .data.init_task : { *(.data.init_task) } + .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) { + *(.data.init_task) + } /* will be freed after init */ . = ALIGN(4096); /* Init code and data */ __init_begin = .; - .init.text : { + .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { _sinittext = .; *(.init.text) _einittext = .; } - .init.data : { *(.init.data) } + .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) } . = ALIGN(16); __setup_start = .; - .init.setup : { *(.init.setup) } + .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) } __setup_end = .; __initcall_start = .; - .initcall.init : { + .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { *(.initcall1.init) *(.initcall2.init) *(.initcall3.init) @@ -80,33 +89,41 @@ SECTIONS } __initcall_end = .; __con_initcall_start = .; - .con_initcall.init : { *(.con_initcall.init) } + .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { + *(.con_initcall.init) + } __con_initcall_end = .; SECURITY_INIT . = ALIGN(4); __alt_instructions = .; - .altinstructions : { *(.altinstructions) } + .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) { + *(.altinstructions) + } __alt_instructions_end = .; - .altinstr_replacement : { *(.altinstr_replacement) } + .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) { + *(.altinstr_replacement) + } /* .exit.text is discard at runtime, not link time, to deal with references from .altinstructions and .eh_frame */ - .exit.text : { *(.exit.text) } - .exit.data : { *(.exit.data) } + .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) } + .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) } . = ALIGN(4096); __initramfs_start = .; - .init.ramfs : { *(.init.ramfs) } + .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) } __initramfs_end = .; . = ALIGN(32); __per_cpu_start = .; - .data.percpu : { *(.data.percpu) } + .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) } __per_cpu_end = .; . = ALIGN(4096); __init_end = .; /* freed after init ends here */ __bss_start = .; /* BSS */ - .bss : { + .bss.page_aligned : AT(ADDR(.bss.page_aligned) - LOAD_OFFSET) { *(.bss.page_aligned) + } + .bss : AT(ADDR(.bss) - LOAD_OFFSET) { *(.bss) } . = ALIGN(4); diff --git a/arch/i386/lib/dec_and_lock.c b/arch/i386/lib/dec_and_lock.c index ab43394dc77..8b81b2524fa 100644 --- a/arch/i386/lib/dec_and_lock.c +++ b/arch/i386/lib/dec_and_lock.c @@ -8,6 +8,7 @@ */ #include <linux/spinlock.h> +#include <linux/module.h> #include <asm/atomic.h> int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock) @@ -38,3 +39,4 @@ slow_path: spin_unlock(lock); return 0; } +EXPORT_SYMBOL(_atomic_dec_and_lock); diff --git a/arch/i386/lib/delay.c b/arch/i386/lib/delay.c index 080639f262b..c49a6acbee5 100644 --- a/arch/i386/lib/delay.c +++ b/arch/i386/lib/delay.c @@ -13,6 +13,7 @@ #include <linux/config.h> #include <linux/sched.h> #include <linux/delay.h> +#include <linux/module.h> #include <asm/processor.h> #include <asm/delay.h> #include <asm/timer.h> @@ -34,7 +35,7 @@ inline void __const_udelay(unsigned long xloops) xloops *= 4; __asm__("mull %0" :"=d" (xloops), "=&a" (d0) - :"1" (xloops),"0" (cpu_data[_smp_processor_id()].loops_per_jiffy * (HZ/4))); + :"1" (xloops),"0" (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (HZ/4))); __delay(++xloops); } @@ -47,3 +48,8 @@ void __ndelay(unsigned long nsecs) { __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */ } + +EXPORT_SYMBOL(__delay); +EXPORT_SYMBOL(__const_udelay); +EXPORT_SYMBOL(__udelay); +EXPORT_SYMBOL(__ndelay); diff --git a/arch/i386/lib/mmx.c b/arch/i386/lib/mmx.c index 01f8b1a2cc8..2afda94dffd 100644 --- a/arch/i386/lib/mmx.c +++ b/arch/i386/lib/mmx.c @@ -3,6 +3,7 @@ #include <linux/string.h> #include <linux/sched.h> #include <linux/hardirq.h> +#include <linux/module.h> #include <asm/i387.h> @@ -397,3 +398,7 @@ void mmx_copy_page(void *to, void *from) else fast_copy_page(to, from); } + +EXPORT_SYMBOL(_mmx_memcpy); +EXPORT_SYMBOL(mmx_clear_page); +EXPORT_SYMBOL(mmx_copy_page); diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c index 51aa2bbb026..4cf981d70f4 100644 --- a/arch/i386/lib/usercopy.c +++ b/arch/i386/lib/usercopy.c @@ -84,6 +84,7 @@ __strncpy_from_user(char *dst, const char __user *src, long count) __do_strncpy_from_user(dst, src, count, res); return res; } +EXPORT_SYMBOL(__strncpy_from_user); /** * strncpy_from_user: - Copy a NUL terminated string from userspace. @@ -111,7 +112,7 @@ strncpy_from_user(char *dst, const char __user *src, long count) __do_strncpy_from_user(dst, src, count, res); return res; } - +EXPORT_SYMBOL(strncpy_from_user); /* * Zero Userspace @@ -157,6 +158,7 @@ clear_user(void __user *to, unsigned long n) __do_clear_user(to, n); return n; } +EXPORT_SYMBOL(clear_user); /** * __clear_user: - Zero a block of memory in user space, with less checking. @@ -175,6 +177,7 @@ __clear_user(void __user *to, unsigned long n) __do_clear_user(to, n); return n; } +EXPORT_SYMBOL(__clear_user); /** * strlen_user: - Get the size of a string in user space. @@ -218,6 +221,7 @@ long strnlen_user(const char __user *s, long n) :"cc"); return res & mask; } +EXPORT_SYMBOL(strnlen_user); #ifdef CONFIG_X86_INTEL_USERCOPY static unsigned long @@ -570,6 +574,7 @@ survive: n = __copy_user_intel(to, from, n); return n; } +EXPORT_SYMBOL(__copy_to_user_ll); unsigned long __copy_from_user_ll(void *to, const void __user *from, unsigned long n) @@ -581,6 +586,7 @@ __copy_from_user_ll(void *to, const void __user *from, unsigned long n) n = __copy_user_zeroing_intel(to, from, n); return n; } +EXPORT_SYMBOL(__copy_from_user_ll); /** * copy_to_user: - Copy a block of data into user space. diff --git a/arch/i386/mach-default/setup.c b/arch/i386/mach-default/setup.c index 0aa08eaa893..e5a1a83d09e 100644 --- a/arch/i386/mach-default/setup.c +++ b/arch/i386/mach-default/setup.c @@ -10,6 +10,14 @@ #include <asm/acpi.h> #include <asm/arch_hooks.h> +#ifdef CONFIG_HOTPLUG_CPU +#define DEFAULT_SEND_IPI (1) +#else +#define DEFAULT_SEND_IPI (0) +#endif + +int no_broadcast=DEFAULT_SEND_IPI; + /** * pre_intr_init_hook - initialisation prior to setting up interrupt vectors * @@ -104,3 +112,22 @@ void __init mca_nmi_hook(void) printk("NMI generated from unknown source!\n"); } #endif + +static __init int no_ipi_broadcast(char *str) +{ + get_option(&str, &no_broadcast); + printk ("Using %s mode\n", no_broadcast ? "No IPI Broadcast" : + "IPI Broadcast"); + return 1; +} + +__setup("no_ipi_broadcast", no_ipi_broadcast); + +static int __init print_ipi_mode(void) +{ + printk ("Using IPI %s mode\n", no_broadcast ? "No-Shortcut" : + "Shortcut"); + return 0; +} + +late_initcall(print_ipi_mode); diff --git a/arch/i386/mach-default/topology.c b/arch/i386/mach-default/topology.c index 5b3e8817dae..23395fff35d 100644 --- a/arch/i386/mach-default/topology.c +++ b/arch/i386/mach-default/topology.c @@ -73,12 +73,11 @@ static int __init topology_init(void) { int i; - for (i = 0; i < MAX_NUMNODES; i++) { - if (node_online(i)) - arch_register_node(i); - } - for (i = 0; i < NR_CPUS; i++) - if (cpu_possible(i)) arch_register_cpu(i); + for_each_online_node(i) + arch_register_node(i); + + for_each_cpu(i) + arch_register_cpu(i); return 0; } @@ -88,8 +87,8 @@ static int __init topology_init(void) { int i; - for (i = 0; i < NR_CPUS; i++) - if (cpu_possible(i)) arch_register_cpu(i); + for_each_cpu(i) + arch_register_cpu(i); return 0; } diff --git a/arch/i386/mach-visws/mpparse.c b/arch/i386/mach-visws/mpparse.c index 5a22082147f..5f3d7e6de37 100644 --- a/arch/i386/mach-visws/mpparse.c +++ b/arch/i386/mach-visws/mpparse.c @@ -23,7 +23,6 @@ unsigned long mp_lapic_addr; /* Processor that is doing the boot up */ unsigned int boot_cpu_physical_apicid = -1U; -unsigned int boot_cpu_logical_apicid = -1U; /* Bitmask of physically existing CPUs */ physid_mask_t phys_cpu_present_map; @@ -52,10 +51,8 @@ static void __init MP_processor_info (struct mpc_config_processor *m) (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4, m->mpc_apicver); - if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { + if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) boot_cpu_physical_apicid = m->mpc_apicid; - boot_cpu_logical_apicid = logical_apicid; - } ver = m->mpc_apicver; if ((ver >= 0x14 && m->mpc_apicid >= 0xff) || m->mpc_apicid >= 0xf) { diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c index a6e0ddd65bd..8c8527593da 100644 --- a/arch/i386/mach-voyager/voyager_smp.c +++ b/arch/i386/mach-voyager/voyager_smp.c @@ -1288,7 +1288,7 @@ smp_local_timer_interrupt(struct pt_regs * regs) per_cpu(prof_counter, cpu); } - update_process_times(user_mode(regs)); + update_process_times(user_mode_vm(regs)); } if( ((1<<cpu) & voyager_extended_vic_processors) == 0) diff --git a/arch/i386/mm/Makefile b/arch/i386/mm/Makefile index fc327250684..80908b5aa60 100644 --- a/arch/i386/mm/Makefile +++ b/arch/i386/mm/Makefile @@ -4,7 +4,7 @@ obj-y := init.o pgtable.o fault.o ioremap.o extable.o pageattr.o mmap.o -obj-$(CONFIG_DISCONTIGMEM) += discontig.o +obj-$(CONFIG_NUMA) += discontig.o obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o obj-$(CONFIG_HIGHMEM) += highmem.o obj-$(CONFIG_BOOT_IOREMAP) += boot_ioremap.o diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c index 1726b4096b1..b358f0702a4 100644 --- a/arch/i386/mm/discontig.c +++ b/arch/i386/mm/discontig.c @@ -29,12 +29,16 @@ #include <linux/highmem.h> #include <linux/initrd.h> #include <linux/nodemask.h> +#include <linux/module.h> +#include <linux/kexec.h> + #include <asm/e820.h> #include <asm/setup.h> #include <asm/mmzone.h> #include <bios_ebda.h> struct pglist_data *node_data[MAX_NUMNODES]; +EXPORT_SYMBOL(node_data); bootmem_data_t node0_bdata; /* @@ -42,12 +46,16 @@ bootmem_data_t node0_bdata; * populated the following initialisation. * * 1) node_online_map - the map of all nodes configured (online) in the system - * 2) physnode_map - the mapping between a pfn and owning node - * 3) node_start_pfn - the starting page frame number for a node + * 2) node_start_pfn - the starting page frame number for a node * 3) node_end_pfn - the ending page fram number for a node */ +unsigned long node_start_pfn[MAX_NUMNODES]; +unsigned long node_end_pfn[MAX_NUMNODES]; + +#ifdef CONFIG_DISCONTIGMEM /* + * 4) physnode_map - the mapping between a pfn and owning node * physnode_map keeps track of the physical memory layout of a generic * numa node on a 256Mb break (each element of the array will * represent 256Mb of memory and will be marked by the node id. so, @@ -59,6 +67,7 @@ bootmem_data_t node0_bdata; * physnode_map[8- ] = -1; */ s8 physnode_map[MAX_ELEMENTS] = { [0 ... (MAX_ELEMENTS - 1)] = -1}; +EXPORT_SYMBOL(physnode_map); void memory_present(int nid, unsigned long start, unsigned long end) { @@ -85,9 +94,7 @@ unsigned long node_memmap_size_bytes(int nid, unsigned long start_pfn, return (nr_pages + 1) * sizeof(struct page); } - -unsigned long node_start_pfn[MAX_NUMNODES]; -unsigned long node_end_pfn[MAX_NUMNODES]; +#endif extern unsigned long find_max_low_pfn(void); extern void find_max_pfn(void); @@ -108,6 +115,9 @@ unsigned long node_remap_offset[MAX_NUMNODES]; void *node_remap_start_vaddr[MAX_NUMNODES]; void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); +void *node_remap_end_vaddr[MAX_NUMNODES]; +void *node_remap_alloc_vaddr[MAX_NUMNODES]; + /* * FLAT - support for basic PC memory model with discontig enabled, essentially * a single node with all available processors in it with a flat @@ -146,6 +156,21 @@ static void __init find_max_pfn_node(int nid) BUG(); } +/* Find the owning node for a pfn. */ +int early_pfn_to_nid(unsigned long pfn) +{ + int nid; + + for_each_node(nid) { + if (node_end_pfn[nid] == 0) + break; + if (node_start_pfn[nid] <= pfn && node_end_pfn[nid] >= pfn) + return nid; + } + + return 0; +} + /* * Allocate memory for the pg_data_t for this node via a crude pre-bootmem * method. For node zero take this from the bottom of memory, for @@ -163,6 +188,21 @@ static void __init allocate_pgdat(int nid) } } +void *alloc_remap(int nid, unsigned long size) +{ + void *allocation = node_remap_alloc_vaddr[nid]; + + size = ALIGN(size, L1_CACHE_BYTES); + + if (!allocation || (allocation + size) >= node_remap_end_vaddr[nid]) + return 0; + + node_remap_alloc_vaddr[nid] += size; + memset(allocation, 0, size); + + return allocation; +} + void __init remap_numa_kva(void) { void *vaddr; @@ -170,8 +210,6 @@ void __init remap_numa_kva(void) int node; for_each_online_node(node) { - if (node == 0) - continue; for (pfn=0; pfn < node_remap_size[node]; pfn += PTRS_PER_PTE) { vaddr = node_remap_start_vaddr[node]+(pfn<<PAGE_SHIFT); set_pmd_pfn((ulong) vaddr, @@ -185,13 +223,9 @@ static unsigned long calculate_numa_remap_pages(void) { int nid; unsigned long size, reserve_pages = 0; + unsigned long pfn; for_each_online_node(nid) { - if (nid == 0) - continue; - if (!node_remap_size[nid]) - continue; - /* * The acpi/srat node info can show hot-add memroy zones * where memory could be added but not currently present. @@ -208,11 +242,24 @@ static unsigned long calculate_numa_remap_pages(void) size = (size + LARGE_PAGE_BYTES - 1) / LARGE_PAGE_BYTES; /* now the roundup is correct, convert to PAGE_SIZE pages */ size = size * PTRS_PER_PTE; + + /* + * Validate the region we are allocating only contains valid + * pages. + */ + for (pfn = node_end_pfn[nid] - size; + pfn < node_end_pfn[nid]; pfn++) + if (!page_is_ram(pfn)) + break; + + if (pfn != node_end_pfn[nid]) + size = 0; + printk("Reserving %ld pages of KVA for lmem_map of node %d\n", size, nid); node_remap_size[nid] = size; - reserve_pages += size; node_remap_offset[nid] = reserve_pages; + reserve_pages += size; printk("Shrinking node %d from %ld pages to %ld pages\n", nid, node_end_pfn[nid], node_end_pfn[nid] - size); node_end_pfn[nid] -= size; @@ -265,12 +312,18 @@ unsigned long __init setup_memory(void) (ulong) pfn_to_kaddr(max_low_pfn)); for_each_online_node(nid) { node_remap_start_vaddr[nid] = pfn_to_kaddr( - (highstart_pfn + reserve_pages) - node_remap_offset[nid]); + highstart_pfn + node_remap_offset[nid]); + /* Init the node remap allocator */ + node_remap_end_vaddr[nid] = node_remap_start_vaddr[nid] + + (node_remap_size[nid] * PAGE_SIZE); + node_remap_alloc_vaddr[nid] = node_remap_start_vaddr[nid] + + ALIGN(sizeof(pg_data_t), PAGE_SIZE); + allocate_pgdat(nid); printk ("node %d will remap to vaddr %08lx - %08lx\n", nid, (ulong) node_remap_start_vaddr[nid], - (ulong) pfn_to_kaddr(highstart_pfn + reserve_pages - - node_remap_offset[nid] + node_remap_size[nid])); + (ulong) pfn_to_kaddr(highstart_pfn + + node_remap_offset[nid] + node_remap_size[nid])); } printk("High memory starts at vaddr %08lx\n", (ulong) pfn_to_kaddr(highstart_pfn)); @@ -333,23 +386,9 @@ void __init zone_sizes_init(void) } zholes_size = get_zholes_size(nid); - /* - * We let the lmem_map for node 0 be allocated from the - * normal bootmem allocator, but other nodes come from the - * remapped KVA area - mbligh - */ - if (!nid) - free_area_init_node(nid, NODE_DATA(nid), - zones_size, start, zholes_size); - else { - unsigned long lmem_map; - lmem_map = (unsigned long)node_remap_start_vaddr[nid]; - lmem_map += sizeof(pg_data_t) + PAGE_SIZE - 1; - lmem_map &= PAGE_MASK; - NODE_DATA(nid)->node_mem_map = (struct page *)lmem_map; - free_area_init_node(nid, NODE_DATA(nid), zones_size, - start, zholes_size); - } + + free_area_init_node(nid, NODE_DATA(nid), zones_size, start, + zholes_size); } return; } @@ -358,24 +397,26 @@ void __init set_highmem_pages_init(int bad_ppro) { #ifdef CONFIG_HIGHMEM struct zone *zone; + struct page *page; for_each_zone(zone) { - unsigned long node_pfn, node_high_size, zone_start_pfn; - struct page * zone_mem_map; - + unsigned long node_pfn, zone_start_pfn, zone_end_pfn; + if (!is_highmem(zone)) continue; - printk("Initializing %s for node %d\n", zone->name, - zone->zone_pgdat->node_id); - - node_high_size = zone->spanned_pages; - zone_mem_map = zone->zone_mem_map; zone_start_pfn = zone->zone_start_pfn; + zone_end_pfn = zone_start_pfn + zone->spanned_pages; + + printk("Initializing %s for node %d (%08lx:%08lx)\n", + zone->name, zone->zone_pgdat->node_id, + zone_start_pfn, zone_end_pfn); - for (node_pfn = 0; node_pfn < node_high_size; node_pfn++) { - one_highpage_init((struct page *)(zone_mem_map + node_pfn), - zone_start_pfn + node_pfn, bad_ppro); + for (node_pfn = zone_start_pfn; node_pfn < zone_end_pfn; node_pfn++) { + if (!pfn_valid(node_pfn)) + continue; + page = pfn_to_page(node_pfn); + one_highpage_init(page, node_pfn, bad_ppro); } } totalram_pages += totalhigh_pages; diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c index a509237c481..8e90339d6ea 100644 --- a/arch/i386/mm/fault.c +++ b/arch/i386/mm/fault.c @@ -146,7 +146,7 @@ static int __is_prefetch(struct pt_regs *regs, unsigned long addr) if (instr > limit) break; - if (__get_user(opcode, (unsigned char *) instr)) + if (__get_user(opcode, (unsigned char __user *) instr)) break; instr_hi = opcode & 0xf0; @@ -173,7 +173,7 @@ static int __is_prefetch(struct pt_regs *regs, unsigned long addr) scan_more = 0; if (instr > limit) break; - if (__get_user(opcode, (unsigned char *) instr)) + if (__get_user(opcode, (unsigned char __user *) instr)) break; prefetch = (instr_lo == 0xF) && (opcode == 0x0D || opcode == 0x18); @@ -463,6 +463,9 @@ no_context: printk(KERN_ALERT "*pte = %08lx\n", page); } #endif + tsk->thread.cr2 = address; + tsk->thread.trap_no = 14; + tsk->thread.error_code = error_code; die("Oops", regs, error_code); bust_spinlocks(0); do_exit(SIGKILL); diff --git a/arch/i386/mm/highmem.c b/arch/i386/mm/highmem.c index fc4c4cad4e9..b6eb4dcb877 100644 --- a/arch/i386/mm/highmem.c +++ b/arch/i386/mm/highmem.c @@ -1,4 +1,5 @@ #include <linux/highmem.h> +#include <linux/module.h> void *kmap(struct page *page) { @@ -74,6 +75,24 @@ void kunmap_atomic(void *kvaddr, enum km_type type) preempt_check_resched(); } +/* This is the same as kmap_atomic() but can map memory that doesn't + * have a struct page associated with it. + */ +void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) +{ + enum fixed_addresses idx; + unsigned long vaddr; + + inc_preempt_count(); + + idx = type + KM_TYPE_NR*smp_processor_id(); + vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); + set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot)); + __flush_tlb_one(vaddr); + + return (void*) vaddr; +} + struct page *kmap_atomic_to_page(void *ptr) { unsigned long idx, vaddr = (unsigned long)ptr; @@ -87,3 +106,8 @@ struct page *kmap_atomic_to_page(void *ptr) return pte_page(*pte); } +EXPORT_SYMBOL(kmap); +EXPORT_SYMBOL(kunmap); +EXPORT_SYMBOL(kmap_atomic); +EXPORT_SYMBOL(kunmap_atomic); +EXPORT_SYMBOL(kmap_atomic_to_page); diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c index 171fc925e1e..3b099f32b94 100644 --- a/arch/i386/mm/hugetlbpage.c +++ b/arch/i386/mm/hugetlbpage.c @@ -18,7 +18,7 @@ #include <asm/tlb.h> #include <asm/tlbflush.h> -static pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) +pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) { pgd_t *pgd; pud_t *pud; @@ -30,7 +30,7 @@ static pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) return (pte_t *) pmd; } -static pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) +pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) { pgd_t *pgd; pud_t *pud; @@ -42,21 +42,6 @@ static pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) return (pte_t *) pmd; } -static void set_huge_pte(struct mm_struct *mm, struct vm_area_struct *vma, struct page *page, pte_t * page_table, int write_access) -{ - pte_t entry; - - add_mm_counter(mm, rss, HPAGE_SIZE / PAGE_SIZE); - if (write_access) { - entry = - pte_mkwrite(pte_mkdirty(mk_pte(page, vma->vm_page_prot))); - } else - entry = pte_wrprotect(mk_pte(page, vma->vm_page_prot)); - entry = pte_mkyoung(entry); - mk_pte_huge(entry); - set_pte(page_table, entry); -} - /* * This function checks for proper alignment of input addr and len parameters. */ @@ -69,77 +54,6 @@ int is_aligned_hugepage_range(unsigned long addr, unsigned long len) return 0; } -int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, - struct vm_area_struct *vma) -{ - pte_t *src_pte, *dst_pte, entry; - struct page *ptepage; - unsigned long addr = vma->vm_start; - unsigned long end = vma->vm_end; - - while (addr < end) { - dst_pte = huge_pte_alloc(dst, addr); - if (!dst_pte) - goto nomem; - src_pte = huge_pte_offset(src, addr); - entry = *src_pte; - ptepage = pte_page(entry); - get_page(ptepage); - set_pte(dst_pte, entry); - add_mm_counter(dst, rss, HPAGE_SIZE / PAGE_SIZE); - addr += HPAGE_SIZE; - } - return 0; - -nomem: - return -ENOMEM; -} - -int -follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma, - struct page **pages, struct vm_area_struct **vmas, - unsigned long *position, int *length, int i) -{ - unsigned long vpfn, vaddr = *position; - int remainder = *length; - - WARN_ON(!is_vm_hugetlb_page(vma)); - - vpfn = vaddr/PAGE_SIZE; - while (vaddr < vma->vm_end && remainder) { - - if (pages) { - pte_t *pte; - struct page *page; - - pte = huge_pte_offset(mm, vaddr); - - /* hugetlb should be locked, and hence, prefaulted */ - WARN_ON(!pte || pte_none(*pte)); - - page = &pte_page(*pte)[vpfn % (HPAGE_SIZE/PAGE_SIZE)]; - - WARN_ON(!PageCompound(page)); - - get_page(page); - pages[i] = page; - } - - if (vmas) - vmas[i] = vma; - - vaddr += PAGE_SIZE; - ++vpfn; - --remainder; - ++i; - } - - *length = remainder; - *position = vaddr; - - return i; -} - #if 0 /* This is just for testing */ struct page * follow_huge_addr(struct mm_struct *mm, unsigned long address, int write) @@ -204,83 +118,15 @@ follow_huge_pmd(struct mm_struct *mm, unsigned long address, } #endif -void unmap_hugepage_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) +void hugetlb_clean_stale_pgtable(pte_t *pte) { - struct mm_struct *mm = vma->vm_mm; - unsigned long address; - pte_t pte, *ptep; + pmd_t *pmd = (pmd_t *) pte; struct page *page; - BUG_ON(start & (HPAGE_SIZE - 1)); - BUG_ON(end & (HPAGE_SIZE - 1)); - - for (address = start; address < end; address += HPAGE_SIZE) { - ptep = huge_pte_offset(mm, address); - if (!ptep) - continue; - pte = ptep_get_and_clear(mm, address, ptep); - if (pte_none(pte)) - continue; - page = pte_page(pte); - put_page(page); - } - add_mm_counter(mm ,rss, -((end - start) >> PAGE_SHIFT)); - flush_tlb_range(vma, start, end); -} - -int hugetlb_prefault(struct address_space *mapping, struct vm_area_struct *vma) -{ - struct mm_struct *mm = current->mm; - unsigned long addr; - int ret = 0; - - BUG_ON(vma->vm_start & ~HPAGE_MASK); - BUG_ON(vma->vm_end & ~HPAGE_MASK); - - spin_lock(&mm->page_table_lock); - for (addr = vma->vm_start; addr < vma->vm_end; addr += HPAGE_SIZE) { - unsigned long idx; - pte_t *pte = huge_pte_alloc(mm, addr); - struct page *page; - - if (!pte) { - ret = -ENOMEM; - goto out; - } - - if (!pte_none(*pte)) - continue; - - idx = ((addr - vma->vm_start) >> HPAGE_SHIFT) - + (vma->vm_pgoff >> (HPAGE_SHIFT - PAGE_SHIFT)); - page = find_get_page(mapping, idx); - if (!page) { - /* charge the fs quota first */ - if (hugetlb_get_quota(mapping)) { - ret = -ENOMEM; - goto out; - } - page = alloc_huge_page(); - if (!page) { - hugetlb_put_quota(mapping); - ret = -ENOMEM; - goto out; - } - ret = add_to_page_cache(page, mapping, idx, GFP_ATOMIC); - if (! ret) { - unlock_page(page); - } else { - hugetlb_put_quota(mapping); - free_huge_page(page); - goto out; - } - } - set_huge_pte(mm, vma, page, pte, vma->vm_flags & VM_WRITE); - } -out: - spin_unlock(&mm->page_table_lock); - return ret; + page = pmd_page(*pmd); + pmd_clear(pmd); + dec_page_state(nr_page_table_pages); + page_cache_release(page); } /* x86_64 also uses this file */ @@ -294,7 +140,12 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, struct vm_area_struct *vma; unsigned long start_addr; - start_addr = mm->free_area_cache; + if (len > mm->cached_hole_size) { + start_addr = mm->free_area_cache; + } else { + start_addr = TASK_UNMAPPED_BASE; + mm->cached_hole_size = 0; + } full_search: addr = ALIGN(start_addr, HPAGE_SIZE); @@ -308,6 +159,7 @@ full_search: */ if (start_addr != TASK_UNMAPPED_BASE) { start_addr = TASK_UNMAPPED_BASE; + mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; @@ -316,6 +168,8 @@ full_search: mm->free_area_cache = addr + len; return addr; } + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; addr = ALIGN(vma->vm_end, HPAGE_SIZE); } } @@ -327,12 +181,17 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, struct mm_struct *mm = current->mm; struct vm_area_struct *vma, *prev_vma; unsigned long base = mm->mmap_base, addr = addr0; + unsigned long largest_hole = mm->cached_hole_size; int first_time = 1; /* don't allow allocations above current base */ if (mm->free_area_cache > base) mm->free_area_cache = base; + if (len <= largest_hole) { + largest_hole = 0; + mm->free_area_cache = base; + } try_again: /* make sure it can fit in the remaining address space */ if (mm->free_area_cache < len) @@ -353,13 +212,21 @@ try_again: * vma->vm_start, use it: */ if (addr + len <= vma->vm_start && - (!prev_vma || (addr >= prev_vma->vm_end))) + (!prev_vma || (addr >= prev_vma->vm_end))) { /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr); - else + mm->cached_hole_size = largest_hole; + return (mm->free_area_cache = addr); + } else { /* pull free_area_cache down to the first hole */ - if (mm->free_area_cache == vma->vm_end) + if (mm->free_area_cache == vma->vm_end) { mm->free_area_cache = vma->vm_start; + mm->cached_hole_size = largest_hole; + } + } + + /* remember the largest hole we saw so far */ + if (addr + largest_hole < vma->vm_start) + largest_hole = vma->vm_start - addr; /* try just below the current vma->vm_start */ addr = (vma->vm_start - len) & HPAGE_MASK; @@ -372,6 +239,7 @@ fail: */ if (first_time) { mm->free_area_cache = base; + largest_hole = 0; first_time = 0; goto try_again; } @@ -382,6 +250,7 @@ fail: * allocations. */ mm->free_area_cache = TASK_UNMAPPED_BASE; + mm->cached_hole_size = ~0UL; addr = hugetlb_get_unmapped_area_bottomup(file, addr0, len, pgoff, flags); @@ -389,6 +258,7 @@ fail: * Restore the topdown base: */ mm->free_area_cache = base; + mm->cached_hole_size = ~0UL; return addr; } diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index 7a7ea373726..12216b52e28 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -191,7 +191,7 @@ static inline int page_kills_ppro(unsigned long pagenr) extern int is_available_memory(efi_memory_desc_t *); -static inline int page_is_ram(unsigned long pagenr) +int page_is_ram(unsigned long pagenr) { int i; unsigned long addr, end; @@ -269,7 +269,6 @@ void __init one_highpage_init(struct page *page, int pfn, int bad_ppro) { if (page_is_ram(pfn) && !(bad_ppro && page_kills_ppro(pfn))) { ClearPageReserved(page); - set_bit(PG_highmem, &page->flags); set_page_count(page, 1); __free_page(page); totalhigh_pages++; @@ -277,7 +276,9 @@ void __init one_highpage_init(struct page *page, int pfn, int bad_ppro) SetPageReserved(page); } -#ifndef CONFIG_DISCONTIGMEM +#ifdef CONFIG_NUMA +extern void set_highmem_pages_init(int); +#else static void __init set_highmem_pages_init(int bad_ppro) { int pfn; @@ -285,9 +286,7 @@ static void __init set_highmem_pages_init(int bad_ppro) one_highpage_init(pfn_to_page(pfn), pfn, bad_ppro); totalram_pages += totalhigh_pages; } -#else -extern void set_highmem_pages_init(int); -#endif /* !CONFIG_DISCONTIGMEM */ +#endif /* CONFIG_FLATMEM */ #else #define kmap_init() do { } while (0) @@ -296,12 +295,13 @@ extern void set_highmem_pages_init(int); #endif /* CONFIG_HIGHMEM */ unsigned long long __PAGE_KERNEL = _PAGE_KERNEL; +EXPORT_SYMBOL(__PAGE_KERNEL); unsigned long long __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC; -#ifndef CONFIG_DISCONTIGMEM -#define remap_numa_kva() do {} while (0) -#else +#ifdef CONFIG_NUMA extern void __init remap_numa_kva(void); +#else +#define remap_numa_kva() do {} while (0) #endif static void __init pagetable_init (void) @@ -352,7 +352,7 @@ static void __init pagetable_init (void) #endif } -#if defined(CONFIG_PM_DISK) || defined(CONFIG_SOFTWARE_SUSPEND) +#ifdef CONFIG_SOFTWARE_SUSPEND /* * Swap suspend & friends need this for resume because things like the intel-agp * driver might have split up a kernel 4MB mapping. @@ -526,7 +526,7 @@ static void __init set_max_mapnr_init(void) #else num_physpages = max_low_pfn; #endif -#ifndef CONFIG_DISCONTIGMEM +#ifdef CONFIG_FLATMEM max_mapnr = num_physpages; #endif } @@ -540,7 +540,7 @@ void __init mem_init(void) int tmp; int bad_ppro; -#ifndef CONFIG_DISCONTIGMEM +#ifdef CONFIG_FLATMEM if (!mem_map) BUG(); #endif diff --git a/arch/i386/mm/ioremap.c b/arch/i386/mm/ioremap.c index ab542792b27..6b25afc933b 100644 --- a/arch/i386/mm/ioremap.c +++ b/arch/i386/mm/ioremap.c @@ -11,6 +11,7 @@ #include <linux/vmalloc.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/module.h> #include <asm/io.h> #include <asm/fixmap.h> #include <asm/cacheflush.h> @@ -165,7 +166,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l } return (void __iomem *) (offset + (char __iomem *)addr); } - +EXPORT_SYMBOL(__ioremap); /** * ioremap_nocache - map bus memory into CPU space @@ -222,6 +223,7 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size) return p; } +EXPORT_SYMBOL(ioremap_nocache); void iounmap(volatile void __iomem *addr) { @@ -241,7 +243,7 @@ void iounmap(volatile void __iomem *addr) write_lock(&vmlist_lock); p = __remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr)); if (!p) { - printk("iounmap: bad address %p\n", addr); + printk(KERN_WARNING "iounmap: bad address %p\n", addr); goto out_unlock; } @@ -255,6 +257,7 @@ out_unlock: write_unlock(&vmlist_lock); kfree(p); } +EXPORT_SYMBOL(iounmap); void __init *bt_ioremap(unsigned long phys_addr, unsigned long size) { diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c index dd81479ff88..bd2f7afc7a2 100644 --- a/arch/i386/mm/pgtable.c +++ b/arch/i386/mm/pgtable.c @@ -30,13 +30,14 @@ void show_mem(void) struct page *page; pg_data_t *pgdat; unsigned long i; + struct page_state ps; - printk("Mem-info:\n"); + printk(KERN_INFO "Mem-info:\n"); show_free_areas(); - printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10)); + printk(KERN_INFO "Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10)); for_each_pgdat(pgdat) { for (i = 0; i < pgdat->node_spanned_pages; ++i) { - page = pgdat->node_mem_map + i; + page = pgdat_page_nr(pgdat, i); total++; if (PageHighMem(page)) highmem++; @@ -48,11 +49,18 @@ void show_mem(void) shared += page_count(page) - 1; } } - printk("%d pages of RAM\n", total); - printk("%d pages of HIGHMEM\n",highmem); - printk("%d reserved pages\n",reserved); - printk("%d pages shared\n",shared); - printk("%d pages swap cached\n",cached); + printk(KERN_INFO "%d pages of RAM\n", total); + printk(KERN_INFO "%d pages of HIGHMEM\n", highmem); + printk(KERN_INFO "%d reserved pages\n", reserved); + printk(KERN_INFO "%d pages shared\n", shared); + printk(KERN_INFO "%d pages swap cached\n", cached); + + get_page_state(&ps); + printk(KERN_INFO "%lu pages dirty\n", ps.nr_dirty); + printk(KERN_INFO "%lu pages writeback\n", ps.nr_writeback); + printk(KERN_INFO "%lu pages mapped\n", ps.nr_mapped); + printk(KERN_INFO "%lu pages slab\n", ps.nr_slab); + printk(KERN_INFO "%lu pages pagetables\n", ps.nr_page_table_pages); } /* @@ -105,16 +113,16 @@ void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags) pmd_t *pmd; if (vaddr & (PMD_SIZE-1)) { /* vaddr is misaligned */ - printk ("set_pmd_pfn: vaddr misaligned\n"); + printk(KERN_WARNING "set_pmd_pfn: vaddr misaligned\n"); return; /* BUG(); */ } if (pfn & (PTRS_PER_PTE-1)) { /* pfn is misaligned */ - printk ("set_pmd_pfn: pfn misaligned\n"); + printk(KERN_WARNING "set_pmd_pfn: pfn misaligned\n"); return; /* BUG(); */ } pgd = swapper_pg_dir + pgd_index(vaddr); if (pgd_none(*pgd)) { - printk ("set_pmd_pfn: pgd_none\n"); + printk(KERN_WARNING "set_pmd_pfn: pgd_none\n"); return; /* BUG(); */ } pud = pud_offset(pgd, vaddr); diff --git a/arch/i386/oprofile/backtrace.c b/arch/i386/oprofile/backtrace.c index 52d72e074f7..65dfd2edb67 100644 --- a/arch/i386/oprofile/backtrace.c +++ b/arch/i386/oprofile/backtrace.c @@ -91,7 +91,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth) head = (struct frame_head *)regs->ebp; #endif - if (!user_mode(regs)) { + if (!user_mode_vm(regs)) { while (depth-- && valid_kernel_stack(head, regs)) head = dump_backtrace(head); return; diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c index da21b1d07c1..83458f81e66 100644 --- a/arch/i386/pci/irq.c +++ b/arch/i386/pci/irq.c @@ -227,6 +227,24 @@ static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq, i } /* + * The VIA pirq rules are nibble-based, like ALI, + * but without the ugly irq number munging. + * However, for 82C586, nibble map is different . + */ +static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq) +{ + static unsigned int pirqmap[4] = { 3, 2, 5, 1 }; + return read_config_nybble(router, 0x55, pirqmap[pirq-1]); +} + +static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq) +{ + static unsigned int pirqmap[4] = { 3, 2, 5, 1 }; + write_config_nybble(router, 0x55, pirqmap[pirq-1], irq); + return 1; +} + +/* * ITE 8330G pirq rules are nibble-based * FIXME: pirqmap may be { 1, 0, 3, 2 }, * 2+3 are both mapped to irq 9 on my system @@ -512,6 +530,10 @@ static __init int via_router_probe(struct irq_router *r, struct pci_dev *router, switch(device) { case PCI_DEVICE_ID_VIA_82C586_0: + r->name = "VIA"; + r->get = pirq_via586_get; + r->set = pirq_via586_set; + return 1; case PCI_DEVICE_ID_VIA_82C596: case PCI_DEVICE_ID_VIA_82C686: case PCI_DEVICE_ID_VIA_8231: diff --git a/arch/i386/pci/pcbios.c b/arch/i386/pci/pcbios.c index 141421b673b..b9d65f0bc2d 100644 --- a/arch/i386/pci/pcbios.c +++ b/arch/i386/pci/pcbios.c @@ -4,6 +4,7 @@ #include <linux/pci.h> #include <linux/init.h> +#include <linux/module.h> #include "pci.h" #include "pci-functions.h" @@ -456,7 +457,7 @@ struct irq_routing_table * __devinit pcibios_get_irq_routing_table(void) free_page(page); return rt; } - +EXPORT_SYMBOL(pcibios_get_irq_routing_table); int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq) { @@ -473,6 +474,7 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq) "S" (&pci_indirect)); return !(ret & 0xff00); } +EXPORT_SYMBOL(pcibios_set_irq_routing); static int __init pci_pcbios_init(void) { diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c index cf337c673d9..0e6b45b6125 100644 --- a/arch/i386/power/cpu.c +++ b/arch/i386/power/cpu.c @@ -22,9 +22,11 @@ #include <linux/device.h> #include <linux/suspend.h> #include <linux/acpi.h> + #include <asm/uaccess.h> #include <asm/acpi.h> #include <asm/tlbflush.h> +#include <asm/processor.h> static struct saved_context saved_context; @@ -33,8 +35,6 @@ unsigned long saved_context_esp, saved_context_ebp; unsigned long saved_context_esi, saved_context_edi; unsigned long saved_context_eflags; -extern void enable_sep_cpu(void *); - void __save_processor_state(struct saved_context *ctxt) { kernel_fpu_begin(); @@ -44,7 +44,6 @@ void __save_processor_state(struct saved_context *ctxt) */ asm volatile ("sgdt %0" : "=m" (ctxt->gdt_limit)); asm volatile ("sidt %0" : "=m" (ctxt->idt_limit)); - asm volatile ("sldt %0" : "=m" (ctxt->ldt)); asm volatile ("str %0" : "=m" (ctxt->tr)); /* @@ -94,20 +93,19 @@ static void fix_processor_context(void) * Now maybe reload the debug registers */ if (current->thread.debugreg[7]){ - loaddebug(¤t->thread, 0); - loaddebug(¤t->thread, 1); - loaddebug(¤t->thread, 2); - loaddebug(¤t->thread, 3); - /* no 4 and 5 */ - loaddebug(¤t->thread, 6); - loaddebug(¤t->thread, 7); + set_debugreg(current->thread.debugreg[0], 0); + set_debugreg(current->thread.debugreg[1], 1); + set_debugreg(current->thread.debugreg[2], 2); + set_debugreg(current->thread.debugreg[3], 3); + /* no 4 and 5 */ + set_debugreg(current->thread.debugreg[6], 6); + set_debugreg(current->thread.debugreg[7], 7); } } void __restore_processor_state(struct saved_context *ctxt) { - /* * control registers */ @@ -117,6 +115,13 @@ void __restore_processor_state(struct saved_context *ctxt) asm volatile ("movl %0, %%cr0" :: "r" (ctxt->cr0)); /* + * now restore the descriptor tables to their proper values + * ltr is done i fix_processor_context(). + */ + asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); + asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); + + /* * segment registers */ asm volatile ("movw %0, %%es" :: "r" (ctxt->es)); @@ -125,18 +130,10 @@ void __restore_processor_state(struct saved_context *ctxt) asm volatile ("movw %0, %%ss" :: "r" (ctxt->ss)); /* - * now restore the descriptor tables to their proper values - * ltr is done i fix_processor_context(). - */ - asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); - asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); - asm volatile ("lldt %0" :: "m" (ctxt->ldt)); - - /* * sysenter MSRs */ if (boot_cpu_has(X86_FEATURE_SEP)) - enable_sep_cpu(NULL); + enable_sep_cpu(); fix_processor_context(); do_fpu_end(); |