diff options
Diffstat (limited to 'arch/x86/kernel')
80 files changed, 625 insertions, 626 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index a54d714545f..cd40aba6aa9 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -31,6 +31,7 @@ #include <linux/module.h> #include <linux/dmi.h> #include <linux/irq.h> +#include <linux/slab.h> #include <linux/bootmem.h> #include <linux/ioport.h> #include <linux/pci.h> @@ -490,6 +491,7 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) * ACPI based hotplug support for CPU */ #ifdef CONFIG_ACPI_HOTPLUG_CPU +#include <acpi/processor.h> static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) { @@ -567,6 +569,8 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) goto free_new_map; } + acpi_processor_set_pdc(handle); + cpu = cpumask_first(new_map); acpi_map_cpu2node(handle, cpu, physid); @@ -1293,23 +1297,6 @@ static int __init dmi_disable_acpi(const struct dmi_system_id *d) } /* - * Limit ACPI to CPU enumeration for HT - */ -static int __init force_acpi_ht(const 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; -} - -/* * Force ignoring BIOS IRQ0 pin2 override */ static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) @@ -1345,82 +1332,6 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = { }, /* - * 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 = "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 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"), - }, - }, - - /* * Boxes that need ACPI PCI IRQ routing disabled */ { @@ -1652,8 +1563,10 @@ static int __init parse_acpi(char *arg) } /* Limit ACPI just to boot-time to enable HT */ else if (strcmp(arg, "ht") == 0) { - if (!acpi_force) + if (!acpi_force) { + printk(KERN_WARNING "acpi=ht will be removed in Linux-2.6.35\n"); disable_acpi(); + } acpi_ht = 1; } /* acpi=rsdt use RSDT instead of XSDT */ diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 3a4bf35c179..1a160d5d44d 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -8,6 +8,7 @@ #include <linux/vmalloc.h> #include <linux/memory.h> #include <linux/stop_machine.h> +#include <linux/slab.h> #include <asm/alternative.h> #include <asm/sections.h> #include <asm/pgtable.h> diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index adb0ba02570..f854d89b7ed 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -18,8 +18,8 @@ */ #include <linux/pci.h> -#include <linux/gfp.h> #include <linux/bitmap.h> +#include <linux/slab.h> #include <linux/debugfs.h> #include <linux/scatterlist.h> #include <linux/dma-mapping.h> @@ -118,7 +118,7 @@ static bool check_device(struct device *dev) return false; /* No device or no PCI device */ - if (!dev || dev->bus != &pci_bus_type) + if (dev->bus != &pci_bus_type) return false; devid = get_device_id(dev); @@ -392,6 +392,7 @@ static int __iommu_queue_command(struct amd_iommu *iommu, struct iommu_cmd *cmd) u32 tail, head; u8 *target; + WARN_ON(iommu->cmd_buf_size & CMD_BUFFER_UNINITIALIZED); tail = readl(iommu->mmio_base + MMIO_CMD_TAIL_OFFSET); target = iommu->cmd_buf + tail; memcpy_toio(target, cmd, sizeof(*cmd)); @@ -2186,7 +2187,7 @@ static void prealloc_protection_domains(void) struct dma_ops_domain *dma_dom; u16 devid; - while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { + for_each_pci_dev(dev) { /* Do we handle this device? */ if (!check_device(&dev->dev)) @@ -2298,7 +2299,7 @@ static void cleanup_domain(struct protection_domain *domain) list_for_each_entry_safe(dev_data, next, &domain->dev_list, list) { struct device *dev = dev_data->dev; - do_detach(dev); + __detach_device(dev); atomic_set(&dev_data->bind, 0); } @@ -2327,6 +2328,7 @@ static struct protection_domain *protection_domain_alloc(void) return NULL; spin_lock_init(&domain->lock); + mutex_init(&domain->api_lock); domain->id = domain_id_alloc(); if (!domain->id) goto out_err; @@ -2379,9 +2381,7 @@ static void amd_iommu_domain_destroy(struct iommu_domain *dom) free_pagetable(domain); - domain_id_free(domain->id); - - kfree(domain); + protection_domain_free(domain); dom->priv = NULL; } @@ -2456,6 +2456,8 @@ static int amd_iommu_map_range(struct iommu_domain *dom, iova &= PAGE_MASK; paddr &= PAGE_MASK; + mutex_lock(&domain->api_lock); + for (i = 0; i < npages; ++i) { ret = iommu_map_page(domain, iova, paddr, prot, PM_MAP_4k); if (ret) @@ -2465,6 +2467,8 @@ static int amd_iommu_map_range(struct iommu_domain *dom, paddr += PAGE_SIZE; } + mutex_unlock(&domain->api_lock); + return 0; } @@ -2477,12 +2481,16 @@ static void amd_iommu_unmap_range(struct iommu_domain *dom, iova &= PAGE_MASK; + mutex_lock(&domain->api_lock); + for (i = 0; i < npages; ++i) { iommu_unmap_page(domain, iova, PM_MAP_4k); iova += PAGE_SIZE; } iommu_flush_tlb_pde(domain); + + mutex_unlock(&domain->api_lock); } static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 9dc91b43147..6360abf993d 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -19,8 +19,8 @@ #include <linux/pci.h> #include <linux/acpi.h> -#include <linux/gfp.h> #include <linux/list.h> +#include <linux/slab.h> #include <linux/sysdev.h> #include <linux/interrupt.h> #include <linux/msi.h> @@ -138,9 +138,9 @@ int amd_iommus_present; bool amd_iommu_np_cache __read_mostly; /* - * Set to true if ACPI table parsing and hardware intialization went properly + * The ACPI table parsing functions set this variable on an error */ -static bool amd_iommu_initialized; +static int __initdata amd_iommu_init_err; /* * List of protection domains - used during resume @@ -391,9 +391,11 @@ static int __init find_last_devid_acpi(struct acpi_table_header *table) */ for (i = 0; i < table->length; ++i) checksum += p[i]; - if (checksum != 0) + if (checksum != 0) { /* ACPI table corrupt */ - return -ENODEV; + amd_iommu_init_err = -ENODEV; + return 0; + } p += IVRS_HEADER_LENGTH; @@ -436,7 +438,7 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu) if (cmd_buf == NULL) return NULL; - iommu->cmd_buf_size = CMD_BUFFER_SIZE; + iommu->cmd_buf_size = CMD_BUFFER_SIZE | CMD_BUFFER_UNINITIALIZED; return cmd_buf; } @@ -472,12 +474,13 @@ static void iommu_enable_command_buffer(struct amd_iommu *iommu) &entry, sizeof(entry)); amd_iommu_reset_cmd_buffer(iommu); + iommu->cmd_buf_size &= ~(CMD_BUFFER_UNINITIALIZED); } static void __init free_command_buffer(struct amd_iommu *iommu) { free_pages((unsigned long)iommu->cmd_buf, - get_order(iommu->cmd_buf_size)); + get_order(iommu->cmd_buf_size & ~(CMD_BUFFER_UNINITIALIZED))); } /* allocates the memory where the IOMMU will log its events to */ @@ -920,11 +923,16 @@ static int __init init_iommu_all(struct acpi_table_header *table) h->mmio_phys); iommu = kzalloc(sizeof(struct amd_iommu), GFP_KERNEL); - if (iommu == NULL) - return -ENOMEM; + if (iommu == NULL) { + amd_iommu_init_err = -ENOMEM; + return 0; + } + ret = init_iommu_one(iommu, h); - if (ret) - return ret; + if (ret) { + amd_iommu_init_err = ret; + return 0; + } break; default: break; @@ -934,8 +942,6 @@ static int __init init_iommu_all(struct acpi_table_header *table) } WARN_ON(p != end); - amd_iommu_initialized = true; - return 0; } @@ -1211,6 +1217,10 @@ static int __init amd_iommu_init(void) if (acpi_table_parse("IVRS", find_last_devid_acpi) != 0) return -ENODEV; + ret = amd_iommu_init_err; + if (ret) + goto out; + dev_table_size = tbl_size(DEV_TABLE_ENTRY_SIZE); alias_table_size = tbl_size(ALIAS_TABLE_ENTRY_SIZE); rlookup_table_size = tbl_size(RLOOKUP_TABLE_ENTRY_SIZE); @@ -1270,12 +1280,19 @@ static int __init amd_iommu_init(void) if (acpi_table_parse("IVRS", init_iommu_all) != 0) goto free; - if (!amd_iommu_initialized) + if (amd_iommu_init_err) { + ret = amd_iommu_init_err; goto free; + } if (acpi_table_parse("IVRS", init_memory_definitions) != 0) goto free; + if (amd_iommu_init_err) { + ret = amd_iommu_init_err; + goto free; + } + ret = sysdev_class_register(&amd_iommu_sysdev_class); if (ret) goto free; @@ -1288,6 +1305,8 @@ static int __init amd_iommu_init(void) if (ret) goto free; + enable_iommus(); + if (iommu_pass_through) ret = amd_iommu_init_passthrough(); else @@ -1300,8 +1319,6 @@ static int __init amd_iommu_init(void) amd_iommu_init_notifier(); - enable_iommus(); - if (iommu_pass_through) goto out; @@ -1315,6 +1332,7 @@ out: return ret; free: + disable_iommus(); amd_iommu_uninit_devices(); diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c index 4b7099526d2..a35347501d3 100644 --- a/arch/x86/kernel/apb_timer.c +++ b/arch/x86/kernel/apb_timer.c @@ -33,6 +33,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/sysdev.h> +#include <linux/slab.h> #include <linux/pm.h> #include <linux/pci.h> #include <linux/sfi.h> @@ -428,7 +429,7 @@ static int apbt_cpuhp_notify(struct notifier_block *n, static __init int apbt_late_init(void) { - if (disable_apbt_percpu) + if (disable_apbt_percpu || !apb_timer_block_enabled) return 0; /* This notifier should be called after workqueue is ready */ hotcpu_notifier(apbt_cpuhp_notify, -20); diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index f147a95fd84..b5d8b0bcf23 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -31,7 +31,6 @@ #include <asm/x86_init.h> int gart_iommu_aperture; -EXPORT_SYMBOL_GPL(gart_iommu_aperture); int gart_iommu_aperture_disabled __initdata; int gart_iommu_aperture_allowed __initdata; @@ -394,6 +393,7 @@ void __init gart_iommu_hole_init(void) for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) { int bus; int dev_base, dev_limit; + u32 ctl; bus = bus_dev_ranges[i].bus; dev_base = bus_dev_ranges[i].dev_base; @@ -407,7 +407,19 @@ void __init gart_iommu_hole_init(void) gart_iommu_aperture = 1; x86_init.iommu.iommu_init = gart_iommu_init; - aper_order = (read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL) >> 1) & 7; + ctl = read_pci_config(bus, slot, 3, + AMD64_GARTAPERTURECTL); + + /* + * Before we do anything else disable the GART. It may + * still be enabled if we boot into a crash-kernel here. + * Reconfiguring the GART while it is enabled could have + * unknown side-effects. + */ + ctl &= ~GARTEN; + write_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL, ctl); + + aper_order = (ctl >> 1) & 7; aper_size = (32 * 1024 * 1024) << aper_order; aper_base = read_pci_config(bus, slot, 3, AMD64_GARTAPERTUREBASE) & 0x7fff; aper_base <<= 25; diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 00187f1fcfb..e5a4a1e0161 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1640,8 +1640,10 @@ int __init APIC_init_uniprocessor(void) } #endif +#ifndef CONFIG_SMP enable_IR_x2apic(); default_setup_apic_routing(); +#endif verify_local_APIC(); connect_bsp_APIC(); diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index e3c3d820c32..09d3b17ce0c 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -223,7 +223,7 @@ struct apic apic_flat = { }; /* - * Physflat mode is used when there are more than 8 CPUs on a AMD system. + * Physflat mode is used when there are more than 8 CPUs on a system. * We cannot use logical delivery in this case because the mask * overflows, so use physical mode. */ diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c index dd2b5f26464..03ba1b895f5 100644 --- a/arch/x86/kernel/apic/es7000_32.c +++ b/arch/x86/kernel/apic/es7000_32.c @@ -42,6 +42,7 @@ #include <linux/errno.h> #include <linux/acpi.h> #include <linux/init.h> +#include <linux/gfp.h> #include <linux/nmi.h> #include <linux/smp.h> #include <linux/io.h> diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index e4e0ddcb154..127b8718abf 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -36,6 +36,7 @@ #include <linux/freezer.h> #include <linux/kthread.h> #include <linux/jiffies.h> /* time_after() */ +#include <linux/slab.h> #ifdef CONFIG_ACPI #include <acpi/acpi_bus.h> #endif @@ -1268,6 +1269,14 @@ void __setup_vector_irq(int cpu) /* Mark the inuse vectors */ for_each_irq_desc(irq, desc) { cfg = desc->chip_data; + + /* + * If it is a legacy IRQ handled by the legacy PIC, this cpu + * will be part of the irq_cfg's domain. + */ + if (irq < legacy_pic->nr_legacy_irqs && !IO_APIC_IRQ(irq)) + cpumask_set_cpu(cpu, cfg->domain); + if (!cpumask_test_cpu(cpu, cfg->domain)) continue; vector = cfg->vector; diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c index 8aa65adbd25..1edaf15c0b8 100644 --- a/arch/x86/kernel/apic/nmi.c +++ b/arch/x86/kernel/apic/nmi.c @@ -18,6 +18,7 @@ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/sysdev.h> #include <linux/sysctl.h> #include <linux/percpu.h> diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 3740c8a4eae..c085d52dbaf 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -17,6 +17,7 @@ #include <linux/ctype.h> #include <linux/sched.h> #include <linux/timer.h> +#include <linux/slab.h> #include <linux/cpu.h> #include <linux/init.h> #include <linux/io.h> @@ -120,11 +121,9 @@ EXPORT_SYMBOL_GPL(uv_possible_blades); unsigned long sn_rtc_cycles_per_second; EXPORT_SYMBOL(sn_rtc_cycles_per_second); -/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */ - static const struct cpumask *uv_target_cpus(void) { - return cpumask_of(0); + return cpu_online_mask; } static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask) diff --git a/arch/x86/kernel/bootflag.c b/arch/x86/kernel/bootflag.c index 30f25a75fe2..5de7f4c5697 100644 --- a/arch/x86/kernel/bootflag.c +++ b/arch/x86/kernel/bootflag.c @@ -5,7 +5,6 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/string.h> -#include <linux/slab.h> #include <linux/spinlock.h> #include <linux/acpi.h> #include <asm/io.h> diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c index 1b1920fa7c8..459168083b7 100644 --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -33,6 +33,7 @@ #include <linux/cpufreq.h> #include <linux/compiler.h> #include <linux/dmi.h> +#include <linux/slab.h> #include <trace/events/power.h> #include <linux/acpi.h> diff --git a/arch/x86/kernel/cpu/cpufreq/elanfreq.c b/arch/x86/kernel/cpu/cpufreq/elanfreq.c index 006b278b0d5..c587db472a7 100644 --- a/arch/x86/kernel/cpu/cpufreq/elanfreq.c +++ b/arch/x86/kernel/cpu/cpufreq/elanfreq.c @@ -20,7 +20,6 @@ #include <linux/module.h> #include <linux/init.h> -#include <linux/slab.h> #include <linux/delay.h> #include <linux/cpufreq.h> diff --git a/arch/x86/kernel/cpu/cpufreq/gx-suspmod.c b/arch/x86/kernel/cpu/cpufreq/gx-suspmod.c index ac27ec2264d..16e3483be9e 100644 --- a/arch/x86/kernel/cpu/cpufreq/gx-suspmod.c +++ b/arch/x86/kernel/cpu/cpufreq/gx-suspmod.c @@ -80,6 +80,7 @@ #include <linux/cpufreq.h> #include <linux/pci.h> #include <linux/errno.h> +#include <linux/slab.h> #include <asm/processor-cyrix.h> diff --git a/arch/x86/kernel/cpu/cpufreq/longrun.c b/arch/x86/kernel/cpu/cpufreq/longrun.c index da5f70fcb76..e7b559d74c5 100644 --- a/arch/x86/kernel/cpu/cpufreq/longrun.c +++ b/arch/x86/kernel/cpu/cpufreq/longrun.c @@ -9,7 +9,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> -#include <linux/slab.h> #include <linux/cpufreq.h> #include <linux/timex.h> diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c index 86961519372..7b8a8ba67b0 100644 --- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c +++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c @@ -25,7 +25,6 @@ #include <linux/init.h> #include <linux/smp.h> #include <linux/cpufreq.h> -#include <linux/slab.h> #include <linux/cpumask.h> #include <linux/timex.h> diff --git a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c index ff36d2979a9..ce7cde713e7 100644 --- a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c +++ b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c @@ -30,6 +30,7 @@ #include <linux/sched.h> #include <linux/cpufreq.h> #include <linux/compiler.h> +#include <linux/slab.h> #include <linux/acpi.h> #include <linux/io.h> diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k6.c b/arch/x86/kernel/cpu/cpufreq/powernow-k6.c index cb01dac267d..b3379d6a5c5 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k6.c +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k6.c @@ -13,7 +13,6 @@ #include <linux/init.h> #include <linux/cpufreq.h> #include <linux/ioport.h> -#include <linux/slab.h> #include <linux/timex.h> #include <linux/io.h> diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c index 8d672ef162c..9b1ff37de46 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c @@ -20,6 +20,7 @@ #include <linux/sched.h> /* current */ #include <linux/delay.h> #include <linux/compiler.h> +#include <linux/gfp.h> #include <asm/msr.h> #include <asm/processor.h> diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c index 2ce8e0b5cc5..561758e9518 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c @@ -23,7 +23,6 @@ #include <linux/init.h> #include <linux/cpufreq.h> #include <linux/pci.h> -#include <linux/slab.h> #include <linux/sched.h> #include "speedstep-lib.h" diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c index ad0083abfa2..a94ec6be69f 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c @@ -13,7 +13,6 @@ #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/cpufreq.h> -#include <linux/slab.h> #include <asm/msr.h> #include <asm/tsc.h> diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c b/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c index 04d73c114e4..8abd869baab 100644 --- a/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c +++ b/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c @@ -17,7 +17,6 @@ #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/cpufreq.h> -#include <linux/slab.h> #include <linux/delay.h> #include <linux/io.h> #include <asm/ist.h> diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 879666f4d87..1366c7cfd48 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -47,6 +47,27 @@ static void __cpuinit early_init_intel(struct cpuinfo_x86 *c) (c->x86 == 0x6 && c->x86_model >= 0x0e)) set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); + /* + * Atom erratum AAE44/AAF40/AAG38/AAH41: + * + * A race condition between speculative fetches and invalidating + * a large page. This is worked around in microcode, but we + * need the microcode to have already been loaded... so if it is + * not, recommend a BIOS update and disable large pages. + */ + if (c->x86 == 6 && c->x86_model == 0x1c && c->x86_mask <= 2) { + u32 ucode, junk; + + wrmsr(MSR_IA32_UCODE_REV, 0, 0); + sync_core(); + rdmsr(MSR_IA32_UCODE_REV, junk, ucode); + + if (ucode < 0x20e) { + printk(KERN_WARNING "Atom PSE erratum detected, BIOS microcode update recommended\n"); + clear_cpu_cap(c, X86_FEATURE_PSE); + } + } + #ifdef CONFIG_X86_64 set_cpu_cap(c, X86_FEATURE_SYSENTER32); #else @@ -70,7 +91,8 @@ static void __cpuinit early_init_intel(struct cpuinfo_x86 *c) if (c->x86_power & (1 << 8)) { set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC); - sched_clock_stable = 1; + if (!check_tsc_unstable()) + sched_clock_stable = 1; } /* diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index 73734baa50f..e7dbde7bfed 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-inject.c +++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c @@ -22,6 +22,7 @@ #include <linux/kdebug.h> #include <linux/cpu.h> #include <linux/sched.h> +#include <linux/gfp.h> #include <asm/mce.h> #include <asm/apic.h> diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 28cba46bf32..8a6f0afa767 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -26,6 +26,7 @@ #include <linux/sched.h> #include <linux/sysfs.h> #include <linux/types.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/kmod.h> #include <linux/poll.h> @@ -46,6 +47,13 @@ #include "mce-internal.h" +static DEFINE_MUTEX(mce_read_mutex); + +#define rcu_dereference_check_mce(p) \ + rcu_dereference_check((p), \ + rcu_read_lock_sched_held() || \ + lockdep_is_held(&mce_read_mutex)) + #define CREATE_TRACE_POINTS #include <trace/events/mce.h> @@ -158,7 +166,7 @@ void mce_log(struct mce *mce) mce->finished = 0; wmb(); for (;;) { - entry = rcu_dereference(mcelog.next); + entry = rcu_dereference_check_mce(mcelog.next); for (;;) { /* * When the buffer fills up discard new entries. @@ -1485,8 +1493,6 @@ static void collect_tscs(void *data) rdtscll(cpu_tsc[smp_processor_id()]); } -static DEFINE_MUTEX(mce_read_mutex); - static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize, loff_t *off) { @@ -1500,7 +1506,7 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize, return -ENOMEM; mutex_lock(&mce_read_mutex); - next = rcu_dereference(mcelog.next); + next = rcu_dereference_check_mce(mcelog.next); /* Only supports full reads right now */ if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce)) { @@ -1565,7 +1571,7 @@ timeout: static unsigned int mce_poll(struct file *file, poll_table *wait) { poll_wait(file, &mce_wait, wait); - if (rcu_dereference(mcelog.next)) + if (rcu_dereference_check_mce(mcelog.next)) return POLLIN | POLLRDNORM; return 0; } diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index cda932ca3ad..224392d8fe8 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -21,6 +21,7 @@ #include <linux/errno.h> #include <linux/sched.h> #include <linux/sysfs.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/cpu.h> #include <linux/smp.h> diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c index 7c785634af2..62b48e40920 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_intel.c +++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c @@ -5,6 +5,7 @@ * Author: Andi Kleen */ +#include <linux/gfp.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/percpu.h> @@ -95,7 +96,7 @@ static void cmci_discover(int banks, int boot) /* Already owned by someone else? */ if (val & CMCI_EN) { - if (test_and_clear_bit(i, owned) || boot) + if (test_and_clear_bit(i, owned) && !boot) print_update("SHD", &hdr, i); __clear_bit(i, __get_cpu_var(mce_poll_banks)); continue; @@ -107,7 +108,7 @@ static void cmci_discover(int banks, int boot) /* Did the enable bit stick? -- the bank supports CMCI */ if (val & CMCI_EN) { - if (!test_and_set_bit(i, owned) || boot) + if (!test_and_set_bit(i, owned) && !boot) print_update("CMCI", &hdr, i); __clear_bit(i, __get_cpu_var(mce_poll_banks)); } else { diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c index 9aa5dc76ff4..fd31a441c61 100644 --- a/arch/x86/kernel/cpu/mtrr/generic.c +++ b/arch/x86/kernel/cpu/mtrr/generic.c @@ -6,7 +6,6 @@ #include <linux/module.h> #include <linux/init.h> -#include <linux/slab.h> #include <linux/io.h> #include <linux/mm.h> diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c index e006e56f699..79289632cb2 100644 --- a/arch/x86/kernel/cpu/mtrr/if.c +++ b/arch/x86/kernel/cpu/mtrr/if.c @@ -5,6 +5,7 @@ #include <linux/module.h> #include <linux/ctype.h> #include <linux/string.h> +#include <linux/slab.h> #include <linux/init.h> #define LINE_SIZE 80 diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index b1fbdeecf6c..db5bdc8addf 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -21,6 +21,7 @@ #include <linux/kdebug.h> #include <linux/sched.h> #include <linux/uaccess.h> +#include <linux/slab.h> #include <linux/highmem.h> #include <linux/cpu.h> #include <linux/bitops.h> @@ -28,6 +29,7 @@ #include <asm/apic.h> #include <asm/stacktrace.h> #include <asm/nmi.h> +#include <asm/compat.h> static u64 perf_event_mask __read_mostly; @@ -73,10 +75,10 @@ struct debug_store { struct event_constraint { union { unsigned long idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)]; - u64 idxmsk64[1]; + u64 idxmsk64; }; - int code; - int cmask; + u64 code; + u64 cmask; int weight; }; @@ -103,7 +105,7 @@ struct cpu_hw_events { }; #define __EVENT_CONSTRAINT(c, n, m, w) {\ - { .idxmsk64[0] = (n) }, \ + { .idxmsk64 = (n) }, \ .code = (c), \ .cmask = (m), \ .weight = (w), \ @@ -116,7 +118,7 @@ struct cpu_hw_events { EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVTSEL_MASK) #define FIXED_EVENT_CONSTRAINT(c, n) \ - EVENT_CONSTRAINT(c, n, INTEL_ARCH_FIXED_MASK) + EVENT_CONSTRAINT(c, (1ULL << (32+n)), INTEL_ARCH_FIXED_MASK) #define EVENT_CONSTRAINT_END \ EVENT_CONSTRAINT(0, 0, 0) @@ -133,8 +135,8 @@ struct x86_pmu { int (*handle_irq)(struct pt_regs *); void (*disable_all)(void); void (*enable_all)(void); - void (*enable)(struct hw_perf_event *, int); - void (*disable)(struct hw_perf_event *, int); + void (*enable)(struct perf_event *); + void (*disable)(struct perf_event *); unsigned eventsel; unsigned perfctr; u64 (*event_map)(int); @@ -157,6 +159,11 @@ struct x86_pmu { void (*put_event_constraints)(struct cpu_hw_events *cpuc, struct perf_event *event); struct event_constraint *event_constraints; + + int (*cpu_prepare)(int cpu); + void (*cpu_starting)(int cpu); + void (*cpu_dying)(int cpu); + void (*cpu_dead)(int cpu); }; static struct x86_pmu x86_pmu __read_mostly; @@ -165,8 +172,7 @@ static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, }; -static int x86_perf_event_set_period(struct perf_event *event, - struct hw_perf_event *hwc, int idx); +static int x86_perf_event_set_period(struct perf_event *event); /* * Generalized hw caching related hw_event table, filled @@ -189,11 +195,12 @@ static u64 __read_mostly hw_cache_event_ids * Returns the delta events processed. */ static u64 -x86_perf_event_update(struct perf_event *event, - struct hw_perf_event *hwc, int idx) +x86_perf_event_update(struct perf_event *event) { + struct hw_perf_event *hwc = &event->hw; int shift = 64 - x86_pmu.event_bits; u64 prev_raw_count, new_raw_count; + int idx = hwc->idx; s64 delta; if (idx == X86_PMC_IDX_FIXED_BTS) @@ -293,7 +300,7 @@ static inline bool bts_available(void) return x86_pmu.enable_bts != NULL; } -static inline void init_debug_store_on_cpu(int cpu) +static void init_debug_store_on_cpu(int cpu) { struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds; @@ -305,7 +312,7 @@ static inline void init_debug_store_on_cpu(int cpu) (u32)((u64)(unsigned long)ds >> 32)); } -static inline void fini_debug_store_on_cpu(int cpu) +static void fini_debug_store_on_cpu(int cpu) { if (!per_cpu(cpu_hw_events, cpu).ds) return; @@ -503,6 +510,9 @@ static int __hw_perf_event_init(struct perf_event *event) */ if (attr->type == PERF_TYPE_RAW) { hwc->config |= x86_pmu.raw_event(attr->config); + if ((hwc->config & ARCH_PERFMON_EVENTSEL_ANY) && + perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN)) + return -EACCES; return 0; } @@ -553,9 +563,9 @@ static void x86_pmu_disable_all(void) if (!test_bit(idx, cpuc->active_mask)) continue; rdmsrl(x86_pmu.eventsel + idx, val); - if (!(val & ARCH_PERFMON_EVENTSEL0_ENABLE)) + if (!(val & ARCH_PERFMON_EVENTSEL_ENABLE)) continue; - val &= ~ARCH_PERFMON_EVENTSEL0_ENABLE; + val &= ~ARCH_PERFMON_EVENTSEL_ENABLE; wrmsrl(x86_pmu.eventsel + idx, val); } } @@ -590,7 +600,7 @@ static void x86_pmu_enable_all(void) continue; val = event->hw.config; - val |= ARCH_PERFMON_EVENTSEL0_ENABLE; + val |= ARCH_PERFMON_EVENTSEL_ENABLE; wrmsrl(x86_pmu.eventsel + idx, val); } } @@ -612,8 +622,8 @@ static int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign) bitmap_zero(used_mask, X86_PMC_IDX_MAX); for (i = 0; i < n; i++) { - constraints[i] = - x86_pmu.get_event_constraints(cpuc, cpuc->event_list[i]); + c = x86_pmu.get_event_constraints(cpuc, cpuc->event_list[i]); + constraints[i] = c; } /* @@ -635,7 +645,7 @@ static int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign) if (test_bit(hwc->idx, used_mask)) break; - set_bit(hwc->idx, used_mask); + __set_bit(hwc->idx, used_mask); if (assign) assign[i] = hwc->idx; } @@ -684,7 +694,7 @@ static int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign) if (j == X86_PMC_IDX_MAX) break; - set_bit(j, used_mask); + __set_bit(j, used_mask); if (assign) assign[i] = j; @@ -777,6 +787,7 @@ static inline int match_prev_assignment(struct hw_perf_event *hwc, hwc->last_tag == cpuc->tags[i]; } +static int x86_pmu_start(struct perf_event *event); static void x86_pmu_stop(struct perf_event *event); void hw_perf_enable(void) @@ -793,6 +804,7 @@ void hw_perf_enable(void) return; if (cpuc->n_added) { + int n_running = cpuc->n_events - cpuc->n_added; /* * apply assignment obtained either from * hw_perf_group_sched_in() or x86_pmu_enable() @@ -800,8 +812,7 @@ void hw_perf_enable(void) * step1: save events moving to new counters * step2: reprogram moved events into new counters */ - for (i = 0; i < cpuc->n_events; i++) { - + for (i = 0; i < n_running; i++) { event = cpuc->event_list[i]; hwc = &event->hw; @@ -816,29 +827,18 @@ void hw_perf_enable(void) continue; x86_pmu_stop(event); - - hwc->idx = -1; } for (i = 0; i < cpuc->n_events; i++) { - event = cpuc->event_list[i]; hwc = &event->hw; - if (hwc->idx == -1) { + if (!match_prev_assignment(hwc, cpuc, i)) x86_assign_hw_event(event, cpuc, i); - x86_perf_event_set_period(event, hwc, hwc->idx); - } - /* - * need to mark as active because x86_pmu_disable() - * clear active_mask and events[] yet it preserves - * idx - */ - set_bit(hwc->idx, cpuc->active_mask); - cpuc->events[hwc->idx] = event; + else if (i < n_running) + continue; - x86_pmu.enable(hwc, hwc->idx); - perf_event_update_userpage(event); + x86_pmu_start(event); } cpuc->n_added = 0; perf_events_lapic_init(); @@ -850,15 +850,16 @@ void hw_perf_enable(void) x86_pmu.enable_all(); } -static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc, int idx) +static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc) { - (void)checking_wrmsrl(hwc->config_base + idx, - hwc->config | ARCH_PERFMON_EVENTSEL0_ENABLE); + (void)checking_wrmsrl(hwc->config_base + hwc->idx, + hwc->config | ARCH_PERFMON_EVENTSEL_ENABLE); } -static inline void x86_pmu_disable_event(struct hw_perf_event *hwc, int idx) +static inline void x86_pmu_disable_event(struct perf_event *event) { - (void)checking_wrmsrl(hwc->config_base + idx, hwc->config); + struct hw_perf_event *hwc = &event->hw; + (void)checking_wrmsrl(hwc->config_base + hwc->idx, hwc->config); } static DEFINE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left); @@ -868,12 +869,12 @@ static DEFINE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left); * To be called with the event disabled in hw: */ static int -x86_perf_event_set_period(struct perf_event *event, - struct hw_perf_event *hwc, int idx) +x86_perf_event_set_period(struct perf_event *event) { + struct hw_perf_event *hwc = &event->hw; s64 left = atomic64_read(&hwc->period_left); s64 period = hwc->sample_period; - int err, ret = 0; + int err, ret = 0, idx = hwc->idx; if (idx == X86_PMC_IDX_FIXED_BTS) return 0; @@ -919,11 +920,11 @@ x86_perf_event_set_period(struct perf_event *event, return ret; } -static void x86_pmu_enable_event(struct hw_perf_event *hwc, int idx) +static void x86_pmu_enable_event(struct perf_event *event) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); if (cpuc->enabled) - __x86_pmu_enable_event(hwc, idx); + __x86_pmu_enable_event(&event->hw); } /* @@ -959,34 +960,32 @@ static int x86_pmu_enable(struct perf_event *event) memcpy(cpuc->assign, assign, n*sizeof(int)); cpuc->n_events = n; - cpuc->n_added = n - n0; + cpuc->n_added += n - n0; return 0; } static int x86_pmu_start(struct perf_event *event) { - struct hw_perf_event *hwc = &event->hw; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + int idx = event->hw.idx; - if (hwc->idx == -1) + if (idx == -1) return -EAGAIN; - x86_perf_event_set_period(event, hwc, hwc->idx); - x86_pmu.enable(hwc, hwc->idx); + x86_perf_event_set_period(event); + cpuc->events[idx] = event; + __set_bit(idx, cpuc->active_mask); + x86_pmu.enable(event); + perf_event_update_userpage(event); return 0; } static void x86_pmu_unthrottle(struct perf_event *event) { - struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - struct hw_perf_event *hwc = &event->hw; - - if (WARN_ON_ONCE(hwc->idx >= X86_PMC_IDX_MAX || - cpuc->events[hwc->idx] != event)) - return; - - x86_pmu.enable(hwc, hwc->idx); + int ret = x86_pmu_start(event); + WARN_ON_ONCE(ret); } void perf_event_print_debug(void) @@ -1046,18 +1045,16 @@ static void x86_pmu_stop(struct perf_event *event) struct hw_perf_event *hwc = &event->hw; int idx = hwc->idx; - /* - * Must be done before we disable, otherwise the nmi handler - * could reenable again: - */ - clear_bit(idx, cpuc->active_mask); - x86_pmu.disable(hwc, idx); + if (!__test_and_clear_bit(idx, cpuc->active_mask)) + return; + + x86_pmu.disable(event); /* * Drain the remaining delta count out of a event * that we are disabling: */ - x86_perf_event_update(event, hwc, idx); + x86_perf_event_update(event); cpuc->events[idx] = NULL; } @@ -1094,8 +1091,7 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) int idx, handled = 0; u64 val; - data.addr = 0; - data.raw = NULL; + perf_sample_data_init(&data, 0); cpuc = &__get_cpu_var(cpu_hw_events); @@ -1106,7 +1102,7 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) event = cpuc->events[idx]; hwc = &event->hw; - val = x86_perf_event_update(event, hwc, idx); + val = x86_perf_event_update(event); if (val & (1ULL << (x86_pmu.event_bits - 1))) continue; @@ -1116,11 +1112,11 @@ static int x86_pmu_handle_irq(struct pt_regs *regs) handled = 1; data.period = event->hw.last_period; - if (!x86_perf_event_set_period(event, hwc, idx)) + if (!x86_perf_event_set_period(event)) continue; if (perf_event_overflow(event, 1, &data, regs)) - x86_pmu.disable(hwc, idx); + x86_pmu_stop(event); } if (handled) @@ -1307,7 +1303,7 @@ int hw_perf_group_sched_in(struct perf_event *leader, memcpy(cpuc->assign, assign, n0*sizeof(int)); cpuc->n_events = n0; - cpuc->n_added = n1; + cpuc->n_added += n1; ctx->nr_active += n1; /* @@ -1335,6 +1331,41 @@ undo: #include "perf_event_p6.c" #include "perf_event_intel.c" +static int __cpuinit +x86_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu) +{ + unsigned int cpu = (long)hcpu; + int ret = NOTIFY_OK; + + switch (action & ~CPU_TASKS_FROZEN) { + case CPU_UP_PREPARE: + if (x86_pmu.cpu_prepare) + ret = x86_pmu.cpu_prepare(cpu); + break; + + case CPU_STARTING: + if (x86_pmu.cpu_starting) + x86_pmu.cpu_starting(cpu); + break; + + case CPU_DYING: + if (x86_pmu.cpu_dying) + x86_pmu.cpu_dying(cpu); + break; + + case CPU_UP_CANCELED: + case CPU_DEAD: + if (x86_pmu.cpu_dead) + x86_pmu.cpu_dead(cpu); + break; + + default: + break; + } + + return ret; +} + static void __init pmu_check_apic(void) { if (cpu_has_apic) @@ -1347,6 +1378,7 @@ static void __init pmu_check_apic(void) void __init init_hw_perf_events(void) { + struct event_constraint *c; int err; pr_info("Performance Events: "); @@ -1395,6 +1427,16 @@ void __init init_hw_perf_events(void) __EVENT_CONSTRAINT(0, (1ULL << x86_pmu.num_events) - 1, 0, x86_pmu.num_events); + if (x86_pmu.event_constraints) { + for_each_event_constraint(c, x86_pmu.event_constraints) { + if (c->cmask != INTEL_ARCH_FIXED_MASK) + continue; + + c->idxmsk64 |= (1ULL << x86_pmu.num_events) - 1; + c->weight += x86_pmu.num_events; + } + } + pr_info("... version: %d\n", x86_pmu.version); pr_info("... bit width: %d\n", x86_pmu.event_bits); pr_info("... generic registers: %d\n", x86_pmu.num_events); @@ -1402,11 +1444,13 @@ void __init init_hw_perf_events(void) pr_info("... max period: %016Lx\n", x86_pmu.max_period); pr_info("... fixed-purpose events: %d\n", x86_pmu.num_events_fixed); pr_info("... event mask: %016Lx\n", perf_event_mask); + + perf_cpu_notifier(x86_pmu_notifier); } static inline void x86_pmu_read(struct perf_event *event) { - x86_perf_event_update(event, &event->hw, event->hw.idx); + x86_perf_event_update(event); } static const struct pmu pmu = { @@ -1588,14 +1632,42 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n) return len; } -static int copy_stack_frame(const void __user *fp, struct stack_frame *frame) +#ifdef CONFIG_COMPAT +static inline int +perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) { - unsigned long bytes; + /* 32-bit process in 64-bit kernel. */ + struct stack_frame_ia32 frame; + const void __user *fp; - bytes = copy_from_user_nmi(frame, fp, sizeof(*frame)); + if (!test_thread_flag(TIF_IA32)) + return 0; - return bytes == sizeof(*frame); + fp = compat_ptr(regs->bp); + while (entry->nr < PERF_MAX_STACK_DEPTH) { + unsigned long bytes; + frame.next_frame = 0; + frame.return_address = 0; + + bytes = copy_from_user_nmi(&frame, fp, sizeof(frame)); + if (bytes != sizeof(frame)) + break; + + if (fp < compat_ptr(regs->sp)) + break; + + callchain_store(entry, frame.return_address); + fp = compat_ptr(frame.next_frame); + } + return 1; +} +#else +static inline int +perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry) +{ + return 0; } +#endif static void perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry) @@ -1611,11 +1683,16 @@ perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry) callchain_store(entry, PERF_CONTEXT_USER); callchain_store(entry, regs->ip); + if (perf_callchain_user32(regs, entry)) + return; + while (entry->nr < PERF_MAX_STACK_DEPTH) { + unsigned long bytes; frame.next_frame = NULL; frame.return_address = 0; - if (!copy_stack_frame(fp, &frame)) + bytes = copy_from_user_nmi(&frame, fp, sizeof(frame)); + if (bytes != sizeof(frame)) break; if ((unsigned long)fp < regs->sp) @@ -1662,28 +1739,14 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) return entry; } -void hw_perf_event_setup_online(int cpu) -{ - init_debug_store_on_cpu(cpu); - - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - amd_pmu_cpu_online(cpu); - break; - default: - return; - } -} - -void hw_perf_event_setup_offline(int cpu) +void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip) { - init_debug_store_on_cpu(cpu); - - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_AMD: - amd_pmu_cpu_offline(cpu); - break; - default: - return; - } + regs->ip = ip; + /* + * perf_arch_fetch_caller_regs adds another call, we need to increment + * the skip level + */ + regs->bp = rewind_frame_pointer(skip + 1); + regs->cs = __KERNEL_CS; + local_save_flags(regs->flags); } diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c index 8f3dbfda3c4..db6f7d4056e 100644 --- a/arch/x86/kernel/cpu/perf_event_amd.c +++ b/arch/x86/kernel/cpu/perf_event_amd.c @@ -137,6 +137,13 @@ static inline int amd_is_nb_event(struct hw_perf_event *hwc) return (hwc->config & 0xe0) == 0xe0; } +static inline int amd_has_nb(struct cpu_hw_events *cpuc) +{ + struct amd_nb *nb = cpuc->amd_nb; + + return nb && nb->nb_id != -1; +} + static void amd_put_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event) { @@ -147,7 +154,7 @@ static void amd_put_event_constraints(struct cpu_hw_events *cpuc, /* * only care about NB events */ - if (!(nb && amd_is_nb_event(hwc))) + if (!(amd_has_nb(cpuc) && amd_is_nb_event(hwc))) return; /* @@ -214,7 +221,7 @@ amd_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event) /* * if not NB event or no NB, then no constraints */ - if (!(nb && amd_is_nb_event(hwc))) + if (!(amd_has_nb(cpuc) && amd_is_nb_event(hwc))) return &unconstrained; /* @@ -271,28 +278,6 @@ done: return &emptyconstraint; } -static __initconst struct x86_pmu amd_pmu = { - .name = "AMD", - .handle_irq = x86_pmu_handle_irq, - .disable_all = x86_pmu_disable_all, - .enable_all = x86_pmu_enable_all, - .enable = x86_pmu_enable_event, - .disable = x86_pmu_disable_event, - .eventsel = MSR_K7_EVNTSEL0, - .perfctr = MSR_K7_PERFCTR0, - .event_map = amd_pmu_event_map, - .raw_event = amd_pmu_raw_event, - .max_events = ARRAY_SIZE(amd_perfmon_event_map), - .num_events = 4, - .event_bits = 48, - .event_mask = (1ULL << 48) - 1, - .apic = 1, - /* use highest bit to detect overflow */ - .max_period = (1ULL << 47) - 1, - .get_event_constraints = amd_get_event_constraints, - .put_event_constraints = amd_put_event_constraints -}; - static struct amd_nb *amd_alloc_nb(int cpu, int nb_id) { struct amd_nb *nb; @@ -309,57 +294,61 @@ static struct amd_nb *amd_alloc_nb(int cpu, int nb_id) * initialize all possible NB constraints */ for (i = 0; i < x86_pmu.num_events; i++) { - set_bit(i, nb->event_constraints[i].idxmsk); + __set_bit(i, nb->event_constraints[i].idxmsk); nb->event_constraints[i].weight = 1; } return nb; } -static void amd_pmu_cpu_online(int cpu) +static int amd_pmu_cpu_prepare(int cpu) { - struct cpu_hw_events *cpu1, *cpu2; - struct amd_nb *nb = NULL; + struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu); + + WARN_ON_ONCE(cpuc->amd_nb); + + if (boot_cpu_data.x86_max_cores < 2) + return NOTIFY_OK; + + cpuc->amd_nb = amd_alloc_nb(cpu, -1); + if (!cpuc->amd_nb) + return NOTIFY_BAD; + + return NOTIFY_OK; +} + +static void amd_pmu_cpu_starting(int cpu) +{ + struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu); + struct amd_nb *nb; int i, nb_id; if (boot_cpu_data.x86_max_cores < 2) return; - /* - * function may be called too early in the - * boot process, in which case nb_id is bogus - */ nb_id = amd_get_nb_id(cpu); - if (nb_id == BAD_APICID) - return; - - cpu1 = &per_cpu(cpu_hw_events, cpu); - cpu1->amd_nb = NULL; + WARN_ON_ONCE(nb_id == BAD_APICID); raw_spin_lock(&amd_nb_lock); for_each_online_cpu(i) { - cpu2 = &per_cpu(cpu_hw_events, i); - nb = cpu2->amd_nb; - if (!nb) + nb = per_cpu(cpu_hw_events, i).amd_nb; + if (WARN_ON_ONCE(!nb)) continue; - if (nb->nb_id == nb_id) - goto found; - } - nb = amd_alloc_nb(cpu, nb_id); - if (!nb) { - pr_err("perf_events: failed NB allocation for CPU%d\n", cpu); - raw_spin_unlock(&amd_nb_lock); - return; + if (nb->nb_id == nb_id) { + kfree(cpuc->amd_nb); + cpuc->amd_nb = nb; + break; + } } -found: - nb->refcnt++; - cpu1->amd_nb = nb; + + cpuc->amd_nb->nb_id = nb_id; + cpuc->amd_nb->refcnt++; raw_spin_unlock(&amd_nb_lock); } -static void amd_pmu_cpu_offline(int cpu) +static void amd_pmu_cpu_dead(int cpu) { struct cpu_hw_events *cpuhw; @@ -370,14 +359,44 @@ static void amd_pmu_cpu_offline(int cpu) raw_spin_lock(&amd_nb_lock); - if (--cpuhw->amd_nb->refcnt == 0) - kfree(cpuhw->amd_nb); + if (cpuhw->amd_nb) { + struct amd_nb *nb = cpuhw->amd_nb; + + if (nb->nb_id == -1 || --nb->refcnt == 0) + kfree(nb); - cpuhw->amd_nb = NULL; + cpuhw->amd_nb = NULL; + } raw_spin_unlock(&amd_nb_lock); } +static __initconst struct x86_pmu amd_pmu = { + .name = "AMD", + .handle_irq = x86_pmu_handle_irq, + .disable_all = x86_pmu_disable_all, + .enable_all = x86_pmu_enable_all, + .enable = x86_pmu_enable_event, + .disable = x86_pmu_disable_event, + .eventsel = MSR_K7_EVNTSEL0, + .perfctr = MSR_K7_PERFCTR0, + .event_map = amd_pmu_event_map, + .raw_event = amd_pmu_raw_event, + .max_events = ARRAY_SIZE(amd_perfmon_event_map), + .num_events = 4, + .event_bits = 48, + .event_mask = (1ULL << 48) - 1, + .apic = 1, + /* use highest bit to detect overflow */ + .max_period = (1ULL << 47) - 1, + .get_event_constraints = amd_get_event_constraints, + .put_event_constraints = amd_put_event_constraints, + + .cpu_prepare = amd_pmu_cpu_prepare, + .cpu_starting = amd_pmu_cpu_starting, + .cpu_dead = amd_pmu_cpu_dead, +}; + static __init int amd_pmu_init(void) { /* Performance-monitoring supported from K7 and later: */ @@ -390,11 +409,6 @@ static __init int amd_pmu_init(void) memcpy(hw_cache_event_ids, amd_hw_cache_event_ids, sizeof(hw_cache_event_ids)); - /* - * explicitly initialize the boot cpu, other cpus will get - * the cpu hotplug callbacks from smp_init() - */ - amd_pmu_cpu_online(smp_processor_id()); return 0; } @@ -405,12 +419,4 @@ static int amd_pmu_init(void) return 0; } -static void amd_pmu_cpu_online(int cpu) -{ -} - -static void amd_pmu_cpu_offline(int cpu) -{ -} - #endif diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 977e7544738..9c794ac8783 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -1,7 +1,7 @@ #ifdef CONFIG_CPU_SUP_INTEL /* - * Intel PerfMon v3. Used on Core2 and later. + * Intel PerfMon, used on Core and later. */ static const u64 intel_perfmon_event_map[] = { @@ -27,8 +27,14 @@ static struct event_constraint intel_core_event_constraints[] = static struct event_constraint intel_core2_event_constraints[] = { - FIXED_EVENT_CONSTRAINT(0xc0, (0x3|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */ - FIXED_EVENT_CONSTRAINT(0x3c, (0x3|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */ + FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ + FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ + /* + * Core2 has Fixed Counter 2 listed as CPU_CLK_UNHALTED.REF and event + * 0x013c as CPU_CLK_UNHALTED.BUS and specifies there is a fixed + * ratio between these counters. + */ + /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */ INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */ INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */ INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */ @@ -37,14 +43,16 @@ static struct event_constraint intel_core2_event_constraints[] = INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */ INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */ INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */ + INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */ INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */ EVENT_CONSTRAINT_END }; static struct event_constraint intel_nehalem_event_constraints[] = { - FIXED_EVENT_CONSTRAINT(0xc0, (0xf|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */ - FIXED_EVENT_CONSTRAINT(0x3c, (0xf|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */ + FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ + FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ + /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */ INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */ INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */ INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */ @@ -58,8 +66,9 @@ static struct event_constraint intel_nehalem_event_constraints[] = static struct event_constraint intel_westmere_event_constraints[] = { - FIXED_EVENT_CONSTRAINT(0xc0, (0xf|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */ - FIXED_EVENT_CONSTRAINT(0x3c, (0xf|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */ + FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ + FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ + /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */ INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */ INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */ INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */ @@ -68,8 +77,9 @@ static struct event_constraint intel_westmere_event_constraints[] = static struct event_constraint intel_gen_event_constraints[] = { - FIXED_EVENT_CONSTRAINT(0xc0, (0x3|(1ULL<<32))), /* INSTRUCTIONS_RETIRED */ - FIXED_EVENT_CONSTRAINT(0x3c, (0x3|(1ULL<<33))), /* UNHALTED_CORE_CYCLES */ + FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ + FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ + /* FIXED_EVENT_CONSTRAINT(0x013c, 2), CPU_CLK_UNHALTED.REF */ EVENT_CONSTRAINT_END }; @@ -538,9 +548,9 @@ static inline void intel_pmu_ack_status(u64 ack) } static inline void -intel_pmu_disable_fixed(struct hw_perf_event *hwc, int __idx) +intel_pmu_disable_fixed(struct hw_perf_event *hwc) { - int idx = __idx - X86_PMC_IDX_FIXED; + int idx = hwc->idx - X86_PMC_IDX_FIXED; u64 ctrl_val, mask; mask = 0xfULL << (idx * 4); @@ -580,10 +590,9 @@ static void intel_pmu_drain_bts_buffer(void) ds->bts_index = ds->bts_buffer_base; + perf_sample_data_init(&data, 0); data.period = event->hw.last_period; - data.addr = 0; - data.raw = NULL; regs.ip = 0; /* @@ -612,26 +621,28 @@ static void intel_pmu_drain_bts_buffer(void) } static inline void -intel_pmu_disable_event(struct hw_perf_event *hwc, int idx) +intel_pmu_disable_event(struct perf_event *event) { - if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) { + struct hw_perf_event *hwc = &event->hw; + + if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) { intel_pmu_disable_bts(); intel_pmu_drain_bts_buffer(); return; } if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) { - intel_pmu_disable_fixed(hwc, idx); + intel_pmu_disable_fixed(hwc); return; } - x86_pmu_disable_event(hwc, idx); + x86_pmu_disable_event(event); } static inline void -intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx) +intel_pmu_enable_fixed(struct hw_perf_event *hwc) { - int idx = __idx - X86_PMC_IDX_FIXED; + int idx = hwc->idx - X86_PMC_IDX_FIXED; u64 ctrl_val, bits, mask; int err; @@ -661,9 +672,11 @@ intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx) err = checking_wrmsrl(hwc->config_base, ctrl_val); } -static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx) +static void intel_pmu_enable_event(struct perf_event *event) { - if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) { + struct hw_perf_event *hwc = &event->hw; + + if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) { if (!__get_cpu_var(cpu_hw_events).enabled) return; @@ -672,11 +685,11 @@ static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx) } if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) { - intel_pmu_enable_fixed(hwc, idx); + intel_pmu_enable_fixed(hwc); return; } - __x86_pmu_enable_event(hwc, idx); + __x86_pmu_enable_event(hwc); } /* @@ -685,14 +698,8 @@ static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx) */ static int intel_pmu_save_and_restart(struct perf_event *event) { - struct hw_perf_event *hwc = &event->hw; - int idx = hwc->idx; - int ret; - - x86_perf_event_update(event, hwc, idx); - ret = x86_perf_event_set_period(event, hwc, idx); - - return ret; + x86_perf_event_update(event); + return x86_perf_event_set_period(event); } static void intel_pmu_reset(void) @@ -732,16 +739,15 @@ static int intel_pmu_handle_irq(struct pt_regs *regs) int bit, loops; u64 ack, status; - data.addr = 0; - data.raw = NULL; + perf_sample_data_init(&data, 0); cpuc = &__get_cpu_var(cpu_hw_events); - perf_disable(); + intel_pmu_disable_all(); intel_pmu_drain_bts_buffer(); status = intel_pmu_get_status(); if (!status) { - perf_enable(); + intel_pmu_enable_all(); return 0; } @@ -751,8 +757,7 @@ again: WARN_ONCE(1, "perfevents: irq loop stuck!\n"); perf_event_print_debug(); intel_pmu_reset(); - perf_enable(); - return 1; + goto done; } inc_irq_stat(apic_perf_irqs); @@ -760,7 +765,6 @@ again: for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) { struct perf_event *event = cpuc->events[bit]; - clear_bit(bit, (unsigned long *) &status); if (!test_bit(bit, cpuc->active_mask)) continue; @@ -770,7 +774,7 @@ again: data.period = event->hw.last_period; if (perf_event_overflow(event, 1, &data, regs)) - intel_pmu_disable_event(&event->hw, bit); + x86_pmu_stop(event); } intel_pmu_ack_status(ack); @@ -782,8 +786,8 @@ again: if (status) goto again; - perf_enable(); - +done: + intel_pmu_enable_all(); return 1; } @@ -862,7 +866,10 @@ static __initconst struct x86_pmu intel_pmu = { .max_period = (1ULL << 31) - 1, .enable_bts = intel_pmu_enable_bts, .disable_bts = intel_pmu_disable_bts, - .get_event_constraints = intel_get_event_constraints + .get_event_constraints = intel_get_event_constraints, + + .cpu_starting = init_debug_store_on_cpu, + .cpu_dying = fini_debug_store_on_cpu, }; static __init int intel_pmu_init(void) @@ -929,13 +936,14 @@ static __init int intel_pmu_init(void) case 26: /* 45 nm nehalem, "Bloomfield" */ case 30: /* 45 nm nehalem, "Lynnfield" */ + case 46: /* 45 nm nehalem-ex, "Beckton" */ memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids, sizeof(hw_cache_event_ids)); x86_pmu.event_constraints = intel_nehalem_event_constraints; pr_cont("Nehalem/Corei7 events, "); break; - case 28: + case 28: /* Atom */ memcpy(hw_cache_event_ids, atom_hw_cache_event_ids, sizeof(hw_cache_event_ids)); @@ -951,6 +959,7 @@ static __init int intel_pmu_init(void) x86_pmu.event_constraints = intel_westmere_event_constraints; pr_cont("Westmere events, "); break; + default: /* * default constraints for v2 and up diff --git a/arch/x86/kernel/cpu/perf_event_p6.c b/arch/x86/kernel/cpu/perf_event_p6.c index 1ca5ba078af..a330485d14d 100644 --- a/arch/x86/kernel/cpu/perf_event_p6.c +++ b/arch/x86/kernel/cpu/perf_event_p6.c @@ -62,7 +62,7 @@ static void p6_pmu_disable_all(void) /* p6 only has one enable register */ rdmsrl(MSR_P6_EVNTSEL0, val); - val &= ~ARCH_PERFMON_EVENTSEL0_ENABLE; + val &= ~ARCH_PERFMON_EVENTSEL_ENABLE; wrmsrl(MSR_P6_EVNTSEL0, val); } @@ -72,32 +72,34 @@ static void p6_pmu_enable_all(void) /* p6 only has one enable register */ rdmsrl(MSR_P6_EVNTSEL0, val); - val |= ARCH_PERFMON_EVENTSEL0_ENABLE; + val |= ARCH_PERFMON_EVENTSEL_ENABLE; wrmsrl(MSR_P6_EVNTSEL0, val); } static inline void -p6_pmu_disable_event(struct hw_perf_event *hwc, int idx) +p6_pmu_disable_event(struct perf_event *event) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; u64 val = P6_NOP_EVENT; if (cpuc->enabled) - val |= ARCH_PERFMON_EVENTSEL0_ENABLE; + val |= ARCH_PERFMON_EVENTSEL_ENABLE; - (void)checking_wrmsrl(hwc->config_base + idx, val); + (void)checking_wrmsrl(hwc->config_base + hwc->idx, val); } -static void p6_pmu_enable_event(struct hw_perf_event *hwc, int idx) +static void p6_pmu_enable_event(struct perf_event *event) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct hw_perf_event *hwc = &event->hw; u64 val; val = hwc->config; if (cpuc->enabled) - val |= ARCH_PERFMON_EVENTSEL0_ENABLE; + val |= ARCH_PERFMON_EVENTSEL_ENABLE; - (void)checking_wrmsrl(hwc->config_base + idx, val); + (void)checking_wrmsrl(hwc->config_base + hwc->idx, val); } static __initconst struct x86_pmu p6_pmu = { diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c index 74f4e85a572..fb329e9f849 100644 --- a/arch/x86/kernel/cpu/perfctr-watchdog.c +++ b/arch/x86/kernel/cpu/perfctr-watchdog.c @@ -680,7 +680,7 @@ static int setup_intel_arch_watchdog(unsigned nmi_hz) cpu_nmi_set_wd_enabled(); apic_write(APIC_LVTPC, APIC_DM_NMI); - evntsel |= ARCH_PERFMON_EVENTSEL0_ENABLE; + evntsel |= ARCH_PERFMON_EVENTSEL_ENABLE; wrmsr(evntsel_msr, evntsel, 0); intel_arch_wd_ops.checkbit = 1ULL << (eax.split.bit_width - 1); return 1; diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c index 1cbed97b59c..dfdb4dba232 100644 --- a/arch/x86/kernel/cpu/vmware.c +++ b/arch/x86/kernel/cpu/vmware.c @@ -22,6 +22,7 @@ */ #include <linux/dmi.h> +#include <linux/module.h> #include <asm/div64.h> #include <asm/vmware.h> #include <asm/x86_init.h> @@ -101,6 +102,7 @@ int vmware_platform(void) return 0; } +EXPORT_SYMBOL(vmware_platform); /* * VMware hypervisor takes care of exporting a reliable TSC to the guest. diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index 83e5e628de7..8b862d5900f 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -40,6 +40,7 @@ #include <linux/cpu.h> #include <linux/notifier.h> #include <linux/uaccess.h> +#include <linux/gfp.h> #include <asm/processor.h> #include <asm/msr.h> diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index a4849c10a77..ebd4c51d096 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -27,7 +27,6 @@ #include <asm/cpu.h> #include <asm/reboot.h> #include <asm/virtext.h> -#include <asm/x86_init.h> #if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC) @@ -103,10 +102,5 @@ void native_machine_crash_shutdown(struct pt_regs *regs) #ifdef CONFIG_HPET_TIMER hpet_disable(); #endif - -#ifdef CONFIG_X86_64 - x86_platform.iommu_shutdown(); -#endif - crash_save_cpu(regs, safe_smp_processor_id()); } diff --git a/arch/x86/kernel/crash_dump_32.c b/arch/x86/kernel/crash_dump_32.c index cd97ce18c29..67414550c3c 100644 --- a/arch/x86/kernel/crash_dump_32.c +++ b/arch/x86/kernel/crash_dump_32.c @@ -5,6 +5,7 @@ * Copyright (C) IBM Corporation, 2004. All rights reserved */ +#include <linux/slab.h> #include <linux/errno.h> #include <linux/highmem.h> #include <linux/crash_dump.h> diff --git a/arch/x86/kernel/dumpstack.h b/arch/x86/kernel/dumpstack.h index 4fd1420faff..e1a93be4fd4 100644 --- a/arch/x86/kernel/dumpstack.h +++ b/arch/x86/kernel/dumpstack.h @@ -14,6 +14,8 @@ #define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :) #endif +#include <linux/uaccess.h> + extern void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, unsigned long *stack, unsigned long bp, char *log_lvl); @@ -29,4 +31,26 @@ struct stack_frame { struct stack_frame *next_frame; unsigned long return_address; }; + +struct stack_frame_ia32 { + u32 next_frame; + u32 return_address; +}; + +static inline unsigned long rewind_frame_pointer(int n) +{ + struct stack_frame *frame; + + get_bp(frame); + +#ifdef CONFIG_FRAME_POINTER + while (n--) { + if (probe_kernel_address(&frame->next_frame, frame)) + break; + } #endif + + return (unsigned long)frame; +} + +#endif /* DUMPSTACK_H */ diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index dce99abb449..272c9f1f05f 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -120,9 +120,15 @@ fixup_bp_irq_link(unsigned long bp, unsigned long *stack, { #ifdef CONFIG_FRAME_POINTER struct stack_frame *frame = (struct stack_frame *)bp; + unsigned long next; - if (!in_irq_stack(stack, irq_stack, irq_stack_end)) - return (unsigned long)frame->next_frame; + if (!in_irq_stack(stack, irq_stack, irq_stack_end)) { + if (!probe_kernel_address(&frame->next_frame, next)) + return next; + else + WARN_ONCE(1, "Perf: bad frame pointer = %p in " + "callchain\n", &frame->next_frame); + } #endif return bp; } @@ -202,7 +208,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, if (in_irq_stack(stack, irq_stack, irq_stack_end)) { if (ops->stack(data, "IRQ") < 0) break; - bp = print_context_stack(tinfo, stack, bp, + bp = ops->walk_stack(tinfo, stack, bp, ops, data, irq_stack_end, &graph); /* * We link to the next stack (which would be @@ -223,7 +229,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, /* * This handles the process stack: */ - bp = print_context_stack(tinfo, stack, bp, ops, data, NULL, &graph); + bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph); put_cpu(); } EXPORT_SYMBOL(dump_trace); diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 740b440fbd7..7bca3c6a02f 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -519,29 +519,45 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type, printk(KERN_DEBUG "e820 remove range: %016Lx - %016Lx ", (unsigned long long) start, (unsigned long long) end); - e820_print_type(old_type); + if (checktype) + e820_print_type(old_type); printk(KERN_CONT "\n"); for (i = 0; i < e820.nr_map; i++) { struct e820entry *ei = &e820.map[i]; u64 final_start, final_end; + u64 ei_end; if (checktype && ei->type != old_type) continue; + + ei_end = ei->addr + ei->size; /* totally covered? */ - if (ei->addr >= start && - (ei->addr + ei->size) <= (start + size)) { + if (ei->addr >= start && ei_end <= end) { real_removed_size += ei->size; memset(ei, 0, sizeof(struct e820entry)); continue; } + + /* new range is totally covered? */ + if (ei->addr < start && ei_end > end) { + e820_add_region(end, ei_end - end, ei->type); + ei->size = start - ei->addr; + real_removed_size += size; + continue; + } + /* partially covered */ final_start = max(start, ei->addr); - final_end = min(start + size, ei->addr + ei->size); + final_end = min(end, ei_end); if (final_start >= final_end) continue; real_removed_size += final_end - final_start; + /* + * left range could be head or tail, so need to update + * size at first. + */ ei->size -= final_end - final_start; if (ei->addr < final_start) continue; diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c index adedeef1ded..b2e24603739 100644 --- a/arch/x86/kernel/head32.c +++ b/arch/x86/kernel/head32.c @@ -7,6 +7,7 @@ #include <linux/init.h> #include <linux/start_kernel.h> +#include <linux/mm.h> #include <asm/setup.h> #include <asm/sections.h> @@ -44,9 +45,10 @@ void __init i386_start_kernel(void) #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { + /* Assume only end is not page aligned */ u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; - u64 ramdisk_end = ramdisk_image + ramdisk_size; + u64 ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size); reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); } #endif diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index b5a9896ca1e..7147143fd61 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -103,9 +103,10 @@ void __init x86_64_start_reservations(char *real_mode_data) #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { + /* Assume only end is not page aligned */ unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; - unsigned long ramdisk_end = ramdisk_image + ramdisk_size; + unsigned long ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size); reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); } #endif diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 2d8b5035371..3d1e6f16b7a 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -27,7 +27,7 @@ #define GET_CR2_INTO_RCX movq %cr2, %rcx #endif -/* we are not able to switch in one step to the final KERNEL ADRESS SPACE +/* we are not able to switch in one step to the final KERNEL ADDRESS SPACE * because we need identity-mapped pages. * */ diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index ee4fa1bfcb3..23b4ecdffa9 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -4,6 +4,7 @@ #include <linux/sysdev.h> #include <linux/delay.h> #include <linux/errno.h> +#include <linux/slab.h> #include <linux/hpet.h> #include <linux/init.h> #include <linux/cpu.h> @@ -399,9 +400,15 @@ static int hpet_next_event(unsigned long delta, * then we might have a real hardware problem. We can not do * much about it here, but at least alert the user/admin with * a prominent warning. + * An erratum on some chipsets (ICH9,..), results in comparator read + * immediately following a write returning old value. Workaround + * for this is to read this value second time, when first + * read returns old value. */ - WARN_ONCE(hpet_readl(HPET_Tn_CMP(timer)) != cnt, + if (unlikely((u32)hpet_readl(HPET_Tn_CMP(timer)) != cnt)) { + WARN_ONCE(hpet_readl(HPET_Tn_CMP(timer)) != cnt, KERN_WARNING "hpet: compare register read back failed.\n"); + } return (s32)(hpet_readl(HPET_COUNTER) - cnt) >= 0 ? -ETIME : 0; } @@ -1143,6 +1150,7 @@ int hpet_set_periodic_freq(unsigned long freq) do_div(clc, freq); clc >>= hpet_clockevent.shift; hpet_pie_delta = clc; + hpet_pie_limit = 0; } return 1; } diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c index dca2802c666..d6cc065f519 100644 --- a/arch/x86/kernel/hw_breakpoint.c +++ b/arch/x86/kernel/hw_breakpoint.c @@ -344,13 +344,6 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp, } /* - * For kernel-addresses, either the address or symbol name can be - * specified. - */ - if (info->name) - info->address = (unsigned long) - kallsyms_lookup_name(info->name); - /* * Check that the low-order bits of the address are appropriate * for the alignment implied by len. */ @@ -535,8 +528,3 @@ void hw_breakpoint_pmu_read(struct perf_event *bp) { /* TODO */ } - -void hw_breakpoint_pmu_unthrottle(struct perf_event *bp) -{ - /* TODO */ -} diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index c01a2b846d4..54c31c28548 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -8,6 +8,7 @@ #include <linux/module.h> #include <linux/regset.h> #include <linux/sched.h> +#include <linux/slab.h> #include <asm/sigcontext.h> #include <asm/processor.h> diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index fb725ee15f5..7c9f02c130f 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -5,7 +5,6 @@ #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/timex.h> -#include <linux/slab.h> #include <linux/random.h> #include <linux/init.h> #include <linux/kernel_stat.h> diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index ef257fc2921..0ed2d300cd4 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -5,7 +5,6 @@ #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/timex.h> -#include <linux/slab.h> #include <linux/random.h> #include <linux/kprobes.h> #include <linux/init.h> @@ -141,6 +140,28 @@ void __init init_IRQ(void) x86_init.irqs.intr_init(); } +/* + * Setup the vector to irq mappings. + */ +void setup_vector_irq(int cpu) +{ +#ifndef CONFIG_X86_IO_APIC + int irq; + + /* + * On most of the platforms, legacy PIC delivers the interrupts on the + * boot cpu. But there are certain platforms where PIC interrupts are + * delivered to multiple cpu's. If the legacy IRQ is handled by the + * legacy PIC, for the new cpu that is coming online, setup the static + * legacy vector to irq mapping: + */ + for (irq = 0; irq < legacy_pic->nr_legacy_irqs; irq++) + per_cpu(vector_irq, cpu)[IRQ0_VECTOR + irq] = irq; +#endif + + __setup_vector_irq(cpu); +} + static void __init smp_intr_init(void) { #ifdef CONFIG_SMP diff --git a/arch/x86/kernel/k8.c b/arch/x86/kernel/k8.c index cbc4332a77b..0f7bc20cfcd 100644 --- a/arch/x86/kernel/k8.c +++ b/arch/x86/kernel/k8.c @@ -2,8 +2,8 @@ * Shared support code for AMD K8 northbridges and derivates. * Copyright 2006 Andi Kleen, SUSE Labs. Subject to GPLv2. */ -#include <linux/gfp.h> #include <linux/types.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/module.h> @@ -121,3 +121,17 @@ void k8_flush_garts(void) } EXPORT_SYMBOL_GPL(k8_flush_garts); +static __init int init_k8_nbs(void) +{ + int err = 0; + + err = cache_k8_northbridges(); + + if (err < 0) + printk(KERN_NOTICE "K8 NB: Cannot enumerate AMD northbridges.\n"); + + return err; +} + +/* This has to go after the PCI subsystem */ +fs_initcall(init_k8_nbs); diff --git a/arch/x86/kernel/kdebugfs.c b/arch/x86/kernel/kdebugfs.c index e444357375c..8afd9f321f1 100644 --- a/arch/x86/kernel/kdebugfs.c +++ b/arch/x86/kernel/kdebugfs.c @@ -9,6 +9,7 @@ #include <linux/debugfs.h> #include <linux/uaccess.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/stat.h> #include <linux/io.h> diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index bfba6019d76..b2258ca9100 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -618,8 +618,8 @@ int kgdb_arch_init(void) * portion of kgdb because this operation requires mutexs to * complete. */ + hw_breakpoint_init(&attr); attr.bp_addr = (unsigned long)kgdb_arch_init; - attr.type = PERF_TYPE_BREAKPOINT; attr.bp_len = HW_BREAKPOINT_LEN_1; attr.bp_type = HW_BREAKPOINT_W; attr.disabled = 1; diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index ec6ef60cbd1..ea697263b37 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -7,6 +7,7 @@ */ #include <linux/errno.h> +#include <linux/gfp.h> #include <linux/sched.h> #include <linux/string.h> #include <linux/mm.h> diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 4a8bb82248a..035c8c52918 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -9,6 +9,7 @@ #include <linux/mm.h> #include <linux/kexec.h> #include <linux/string.h> +#include <linux/gfp.h> #include <linux/reboot.h> #include <linux/numa.h> #include <linux/ftrace.h> diff --git a/arch/x86/kernel/mca_32.c b/arch/x86/kernel/mca_32.c index 845d80ce1ef..63eaf659623 100644 --- a/arch/x86/kernel/mca_32.c +++ b/arch/x86/kernel/mca_32.c @@ -42,6 +42,7 @@ #include <linux/kernel.h> #include <linux/mca.h> #include <linux/kprobes.h> +#include <linux/slab.h> #include <asm/system.h> #include <asm/io.h> #include <linux/proc_fs.h> diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c index 89f386f044e..e0bc186d750 100644 --- a/arch/x86/kernel/module.c +++ b/arch/x86/kernel/module.c @@ -23,6 +23,7 @@ #include <linux/kernel.h> #include <linux/bug.h> #include <linux/mm.h> +#include <linux/gfp.h> #include <asm/system.h> #include <asm/page.h> diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index a2c1edd2d3a..e81030f71a8 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -664,7 +664,7 @@ static void __init smp_reserve_memory(struct mpf_intel *mpf) { unsigned long size = get_mpc_size(mpf->physptr); - reserve_early(mpf->physptr, mpf->physptr+size, "MP-table mpc"); + reserve_early_overlap_ok(mpf->physptr, mpf->physptr+size, "MP-table mpc"); } static int __init smp_scan_config(unsigned long base, unsigned long length) @@ -693,7 +693,7 @@ static int __init smp_scan_config(unsigned long base, unsigned long length) mpf, (u64)virt_to_phys(mpf)); mem = virt_to_phys(mpf); - reserve_early(mem, mem + sizeof(*mpf), "MP-table mpf"); + reserve_early_overlap_ok(mem, mem + sizeof(*mpf), "MP-table mpf"); if (mpf->physptr) smp_reserve_memory(mpf); diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c index 206735ac8cb..4d4468e9f47 100644 --- a/arch/x86/kernel/msr.c +++ b/arch/x86/kernel/msr.c @@ -37,6 +37,7 @@ #include <linux/cpu.h> #include <linux/notifier.h> #include <linux/uaccess.h> +#include <linux/gfp.h> #include <asm/processor.h> #include <asm/msr.h> diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index 2bbde607814..fb99f7edb34 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -1309,7 +1309,7 @@ static void calgary_init_bitmap_from_tce_table(struct iommu_table *tbl) /* * get_tce_space_from_tar(): * Function for kdump case. Get the tce tables from first kernel - * by reading the contents of the base adress register of calgary iommu + * by reading the contents of the base address register of calgary iommu */ static void __init get_tce_space_from_tar(void) { diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 1aa966c565f..4b7e3d8b01d 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -2,6 +2,7 @@ #include <linux/dma-debug.h> #include <linux/dmar.h> #include <linux/bootmem.h> +#include <linux/gfp.h> #include <linux/pci.h> #include <linux/kmemleak.h> @@ -38,7 +39,7 @@ int iommu_detected __read_mostly = 0; * This variable becomes 1 if iommu=pt is passed on the kernel command line. * If this variable is 1, IOMMU implementations do no DMA translation for * devices and allow every device to access to whole physical memory. This is - * useful if a user want to use an IOMMU only for KVM device assignment to + * useful if a user wants to use an IOMMU only for KVM device assignment to * guests and not for driver dma translation. */ int iommu_pass_through __read_mostly; diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index 34de53b46f8..0f7f130caa6 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -29,6 +29,7 @@ #include <linux/iommu-helper.h> #include <linux/sysdev.h> #include <linux/io.h> +#include <linux/gfp.h> #include <asm/atomic.h> #include <asm/mtrr.h> #include <asm/pgtable.h> @@ -564,6 +565,9 @@ static void enable_gart_translations(void) enable_gart_translation(dev, __pa(agp_gatt_table)); } + + /* Flush the GART-TLB to remove stale entries */ + k8_flush_garts(); } /* @@ -735,7 +739,7 @@ int __init gart_iommu_init(void) unsigned long scratch; long i; - if (cache_k8_northbridges() < 0 || num_k8_northbridges == 0) + if (num_k8_northbridges == 0) return 0; #ifndef CONFIG_AGP_AMD64 diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c index 22be12b60a8..3af4af810c0 100644 --- a/arch/x86/kernel/pci-nommu.c +++ b/arch/x86/kernel/pci-nommu.c @@ -4,6 +4,7 @@ #include <linux/scatterlist.h> #include <linux/string.h> #include <linux/init.h> +#include <linux/gfp.h> #include <linux/pci.h> #include <linux/mm.h> diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 02d678065d7..28ad9f4d8b9 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -526,21 +526,37 @@ static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c) } /* - * Check for AMD CPUs, which have potentially C1E support + * Check for AMD CPUs, where APIC timer interrupt does not wake up CPU from C1e. + * For more information see + * - Erratum #400 for NPT family 0xf and family 0x10 CPUs + * - Erratum #365 for family 0x11 (not affected because C1e not in use) */ static int __cpuinit check_c1e_idle(const struct cpuinfo_x86 *c) { + u64 val; if (c->x86_vendor != X86_VENDOR_AMD) - return 0; - - if (c->x86 < 0x0F) - return 0; + goto no_c1e_idle; /* Family 0x0f models < rev F do not have C1E */ - if (c->x86 == 0x0f && c->x86_model < 0x40) - return 0; + if (c->x86 == 0x0F && c->x86_model >= 0x40) + return 1; - return 1; + if (c->x86 == 0x10) { + /* + * check OSVW bit for CPUs that are not affected + * by erratum #400 + */ + rdmsrl(MSR_AMD64_OSVW_ID_LENGTH, val); + if (val >= 2) { + rdmsrl(MSR_AMD64_OSVW_STATUS, val); + if (!(val & BIT(1))) + goto no_c1e_idle; + } + return 1; + } + +no_c1e_idle: + return 0; } static cpumask_var_t c1e_mask; @@ -607,7 +623,7 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c) { #ifdef CONFIG_SMP if (pm_idle == poll_idle && smp_num_siblings > 1) { - printk(KERN_WARNING "WARNING: polling idle and HT enabled," + printk_once(KERN_WARNING "WARNING: polling idle and HT enabled," " performance may degrade.\n"); } #endif diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index dc9690b4c4c..17cb3295cbf 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -276,12 +276,12 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, set_tsk_thread_flag(p, TIF_FORK); - p->thread.fs = me->thread.fs; - p->thread.gs = me->thread.gs; p->thread.io_bitmap_ptr = NULL; savesegment(gs, p->thread.gsindex); + p->thread.gs = p->thread.gsindex ? 0 : me->thread.gs; savesegment(fs, p->thread.fsindex); + p->thread.fs = p->thread.fsindex ? 0 : me->thread.fs; savesegment(es, p->thread.es); savesegment(ds, p->thread.ds); diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index 2d96aab82a4..2e9b55027b7 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -12,6 +12,7 @@ #include <linux/mm.h> #include <linux/smp.h> #include <linux/errno.h> +#include <linux/slab.h> #include <linux/ptrace.h> #include <linux/regset.h> #include <linux/tracehook.h> @@ -581,7 +582,7 @@ ptrace_modify_breakpoint(struct perf_event *bp, int len, int type, struct perf_event_attr attr; /* - * We shoud have at least an inactive breakpoint at this + * We should have at least an inactive breakpoint at this * slot. It means the user is writing dr7 without having * written the address register first */ diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 5d7ba1a449b..c4851eff57b 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -55,7 +55,6 @@ #include <linux/stddef.h> #include <linux/unistd.h> #include <linux/ptrace.h> -#include <linux/slab.h> #include <linux/user.h> #include <linux/delay.h> @@ -314,16 +313,17 @@ static void __init reserve_brk(void) #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) static void __init relocate_initrd(void) { - + /* Assume only end is not page aligned */ u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; + u64 area_size = PAGE_ALIGN(ramdisk_size); u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; u64 ramdisk_here; unsigned long slop, clen, mapaddr; char *p, *q; /* We need to move the initrd down into lowmem */ - ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, + ramdisk_here = find_e820_area(0, end_of_lowmem, area_size, PAGE_SIZE); if (ramdisk_here == -1ULL) @@ -332,7 +332,7 @@ static void __init relocate_initrd(void) /* Note: this includes all the lowmem currently occupied by the initrd, we rely on that fact to keep the data intact. */ - reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, + reserve_early(ramdisk_here, ramdisk_here + area_size, "NEW RAMDISK"); initrd_start = ramdisk_here + PAGE_OFFSET; initrd_end = initrd_start + ramdisk_size; @@ -376,9 +376,10 @@ static void __init relocate_initrd(void) static void __init reserve_initrd(void) { + /* Assume only end is not page aligned */ u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; - u64 ramdisk_end = ramdisk_image + ramdisk_size; + u64 ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size); u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; if (!boot_params.hdr.type_of_loader || @@ -606,6 +607,16 @@ static int __init setup_elfcorehdr(char *arg) early_param("elfcorehdr", setup_elfcorehdr); #endif +static __init void reserve_ibft_region(void) +{ + unsigned long addr, size = 0; + + addr = find_ibft_region(&size); + + if (size) + reserve_early_overlap_ok(addr, addr + size, "ibft"); +} + #ifdef CONFIG_X86_RESERVE_LOW_64K static int __init dmi_low_memory_corruption(const struct dmi_system_id *d) { @@ -908,6 +919,8 @@ void __init setup_arch(char **cmdline_p) */ find_smp_config(); + reserve_ibft_region(); + reserve_trampoline_memory(); #ifdef CONFIG_ACPI_SLEEP @@ -975,8 +988,6 @@ void __init setup_arch(char **cmdline_p) dma32_reserve_bootmem(); - reserve_ibft_region(); - #ifdef CONFIG_KVM_CLOCK kvmclock_init(); #endif diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index ec1de97600e..d801210945d 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -21,6 +21,7 @@ #include <linux/cache.h> #include <linux/interrupt.h> #include <linux/cpu.h> +#include <linux/gfp.h> #include <asm/mtrr.h> #include <asm/tlbflush.h> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index a02e80c3c54..763d815e27a 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -49,6 +49,7 @@ #include <linux/nmi.h> #include <linux/tboot.h> #include <linux/stackprotector.h> +#include <linux/gfp.h> #include <asm/acpi.h> #include <asm/desc.h> @@ -242,12 +243,10 @@ static void __cpuinit smp_callin(void) end_local_APIC_setup(); map_cpu_to_logical_apicid(); - notify_cpu_starting(cpuid); - /* * Need to setup vector mappings before we enable interrupts. */ - __setup_vector_irq(smp_processor_id()); + setup_vector_irq(smp_processor_id()); /* * Get our bogomips. * @@ -264,6 +263,8 @@ static void __cpuinit smp_callin(void) */ smp_store_cpu_info(cpuid); + notify_cpu_starting(cpuid); + /* * Allow the master to continue. */ diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c index dee1ff7cba5..196552bb412 100644 --- a/arch/x86/kernel/sys_i386_32.c +++ b/arch/x86/kernel/sys_i386_32.c @@ -25,191 +25,6 @@ #include <asm/syscalls.h> /* - * Perform the select(nd, in, out, ex, tv) and mmap() system - * calls. Linux/i386 didn't use to be able to handle more than - * 4 system call parameters, so these system calls used a memory - * block for parameter passing.. - */ - -struct mmap_arg_struct { - unsigned long addr; - unsigned long len; - unsigned long prot; - unsigned long flags; - unsigned long fd; - unsigned long offset; -}; - -asmlinkage int old_mmap(struct mmap_arg_struct __user *arg) -{ - struct mmap_arg_struct a; - int err = -EFAULT; - - if (copy_from_user(&a, arg, sizeof(a))) - goto out; - - err = -EINVAL; - if (a.offset & ~PAGE_MASK) - goto out; - - err = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, - a.fd, a.offset >> PAGE_SHIFT); -out: - return err; -} - - -struct sel_arg_struct { - unsigned long n; - fd_set __user *inp, *outp, *exp; - struct timeval __user *tvp; -}; - -asmlinkage int old_select(struct sel_arg_struct __user *arg) -{ - struct sel_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - /* sys_select() does the appropriate kernel locking */ - return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp); -} - -/* - * sys_ipc() is the de-multiplexer for the SysV IPC calls.. - * - * This is really horribly ugly. - */ -asmlinkage int sys_ipc(uint call, int first, int second, - int third, void __user *ptr, long fifth) -{ - int version, ret; - - version = call >> 16; /* hack for backward compatibility */ - call &= 0xffff; - - switch (call) { - case SEMOP: - return sys_semtimedop(first, (struct sembuf __user *)ptr, second, NULL); - case SEMTIMEDOP: - return sys_semtimedop(first, (struct sembuf __user *)ptr, second, - (const struct timespec __user *)fifth); - - case SEMGET: - return sys_semget(first, second, third); - case SEMCTL: { - union semun fourth; - if (!ptr) - return -EINVAL; - if (get_user(fourth.__pad, (void __user * __user *) ptr)) - return -EFAULT; - return sys_semctl(first, second, third, fourth); - } - - case MSGSND: - return sys_msgsnd(first, (struct msgbuf __user *) ptr, - second, third); - case MSGRCV: - switch (version) { - case 0: { - struct ipc_kludge tmp; - if (!ptr) - return -EINVAL; - - if (copy_from_user(&tmp, - (struct ipc_kludge __user *) ptr, - sizeof(tmp))) - return -EFAULT; - return sys_msgrcv(first, tmp.msgp, second, - tmp.msgtyp, third); - } - default: - return sys_msgrcv(first, - (struct msgbuf __user *) ptr, - second, fifth, third); - } - case MSGGET: - return sys_msgget((key_t) first, second); - case MSGCTL: - return sys_msgctl(first, second, (struct msqid_ds __user *) ptr); - - case SHMAT: - switch (version) { - default: { - ulong raddr; - ret = do_shmat(first, (char __user *) ptr, second, &raddr); - if (ret) - return ret; - return put_user(raddr, (ulong __user *) third); - } - case 1: /* iBCS2 emulator entry point */ - if (!segment_eq(get_fs(), get_ds())) - return -EINVAL; - /* The "(ulong *) third" is valid _only_ because of the kernel segment thing */ - return do_shmat(first, (char __user *) ptr, second, (ulong *) third); - } - case SHMDT: - return sys_shmdt((char __user *)ptr); - case SHMGET: - return sys_shmget(first, second, third); - case SHMCTL: - return sys_shmctl(first, second, - (struct shmid_ds __user *) ptr); - default: - return -ENOSYS; - } -} - -/* - * Old cruft - */ -asmlinkage int sys_uname(struct old_utsname __user *name) -{ - int err; - if (!name) - return -EFAULT; - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof(*name)); - up_read(&uts_sem); - return err? -EFAULT:0; -} - -asmlinkage int sys_olduname(struct oldold_utsname __user *name) -{ - int error; - - if (!name) - return -EFAULT; - if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname))) - return -EFAULT; - - down_read(&uts_sem); - - error = __copy_to_user(&name->sysname, &utsname()->sysname, - __OLD_UTS_LEN); - error |= __put_user(0, name->sysname + __OLD_UTS_LEN); - error |= __copy_to_user(&name->nodename, &utsname()->nodename, - __OLD_UTS_LEN); - error |= __put_user(0, name->nodename + __OLD_UTS_LEN); - error |= __copy_to_user(&name->release, &utsname()->release, - __OLD_UTS_LEN); - error |= __put_user(0, name->release + __OLD_UTS_LEN); - error |= __copy_to_user(&name->version, &utsname()->version, - __OLD_UTS_LEN); - error |= __put_user(0, name->version + __OLD_UTS_LEN); - error |= __copy_to_user(&name->machine, &utsname()->machine, - __OLD_UTS_LEN); - error |= __put_user(0, name->machine + __OLD_UTS_LEN); - - up_read(&uts_sem); - - error = error ? -EFAULT : 0; - - return error; -} - - -/* * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c index 8aa2057efd1..ff14a5044ce 100644 --- a/arch/x86/kernel/sys_x86_64.c +++ b/arch/x86/kernel/sys_x86_64.c @@ -209,15 +209,3 @@ bottomup: return addr; } - - -SYSCALL_DEFINE1(uname, struct new_utsname __user *, name) -{ - int err; - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof(*name)); - up_read(&uts_sem); - if (personality(current->personality) == PER_LINUX32) - err |= copy_to_user(&name->machine, "i686", 5); - return err ? -EFAULT : 0; -} diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S index 15228b5d3eb..8b372934121 100644 --- a/arch/x86/kernel/syscall_table_32.S +++ b/arch/x86/kernel/syscall_table_32.S @@ -81,7 +81,7 @@ ENTRY(sys_call_table) .long sys_settimeofday .long sys_getgroups16 /* 80 */ .long sys_setgroups16 - .long old_select + .long sys_old_select .long sys_symlink .long sys_lstat .long sys_readlink /* 85 */ @@ -89,7 +89,7 @@ ENTRY(sys_call_table) .long sys_swapon .long sys_reboot .long sys_old_readdir - .long old_mmap /* 90 */ + .long sys_old_mmap /* 90 */ .long sys_munmap .long sys_truncate .long sys_ftruncate diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c index 364d015efeb..17b03dd3a6b 100644 --- a/arch/x86/kernel/tlb_uv.c +++ b/arch/x86/kernel/tlb_uv.c @@ -9,6 +9,7 @@ #include <linux/seq_file.h> #include <linux/proc_fs.h> #include <linux/kernel.h> +#include <linux/slab.h> #include <asm/mmu_context.h> #include <asm/uv/uv.h> diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 208a857c679..9faf91ae184 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -50,7 +50,7 @@ u64 native_sched_clock(void) * unstable. We do this because unlike Time Of Day, * the scheduler clock tolerates small errors and it's * very important for it to be as fast as the platform - * can achive it. ) + * can achieve it. ) */ if (unlikely(tsc_disabled)) { /* No locking but a rare wrong value is not a big deal: */ diff --git a/arch/x86/kernel/uv_irq.c b/arch/x86/kernel/uv_irq.c index ece73d8e324..1d40336b030 100644 --- a/arch/x86/kernel/uv_irq.c +++ b/arch/x86/kernel/uv_irq.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/rbtree.h> +#include <linux/slab.h> #include <linux/irq.h> #include <asm/apic.h> diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c index 2b75ef638db..56e421bc379 100644 --- a/arch/x86/kernel/uv_time.c +++ b/arch/x86/kernel/uv_time.c @@ -19,6 +19,7 @@ * Copyright (c) Dimitri Sivanich */ #include <linux/clockchips.h> +#include <linux/slab.h> #include <asm/uv/uv_mmrs.h> #include <asm/uv/uv_hub.h> diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c index 7dd599deca4..ce9fbacb752 100644 --- a/arch/x86/kernel/vmi_32.c +++ b/arch/x86/kernel/vmi_32.c @@ -28,6 +28,7 @@ #include <linux/mm.h> #include <linux/highmem.h> #include <linux/sched.h> +#include <linux/gfp.h> #include <asm/vmi.h> #include <asm/io.h> #include <asm/fixmap.h> diff --git a/arch/x86/kernel/vmiclock_32.c b/arch/x86/kernel/vmiclock_32.c index 2f1ca561429..5e1ff66ecd7 100644 --- a/arch/x86/kernel/vmiclock_32.c +++ b/arch/x86/kernel/vmiclock_32.c @@ -167,7 +167,7 @@ static int vmi_timer_next_event(unsigned long delta, { /* Unfortunately, set_next_event interface only passes relative * expiry, but we want absolute expiry. It'd be better if were - * were passed an aboslute expiry, since a bunch of time may + * were passed an absolute expiry, since a bunch of time may * have been stolen between the time the delta is computed and * when we set the alarm below. */ cycle_t now = vmi_timer_ops.get_cycle_counter(vmi_counter(VMI_ONESHOT)); diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 44879df5569..2cc249718c4 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -291,8 +291,8 @@ SECTIONS .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { __smp_locks = .; *(.smp_locks) - __smp_locks_end = .; . = ALIGN(PAGE_SIZE); + __smp_locks_end = .; } #ifdef CONFIG_X86_64 |