diff options
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/Kconfig | 14 | ||||
| -rw-r--r-- | arch/blackfin/Makefile | 2 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/kvm_para.h | 1 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/posix_types.h | 3 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/thread_info.h | 2 | ||||
| -rw-r--r-- | arch/blackfin/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/blackfin/kernel/init_task.c | 32 | ||||
| -rw-r--r-- | arch/blackfin/kernel/signal.c | 82 | ||||
| -rw-r--r-- | arch/blackfin/kernel/trace.c | 32 | ||||
| -rw-r--r-- | arch/blackfin/mach-bf561/boards/acvilon.c | 3 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/entry.S | 2 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/smp.c | 19 |
13 files changed, 45 insertions, 151 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index 383e7ecda92..fef96f47876 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -31,12 +31,15 @@ config BLACKFIN select HAVE_KERNEL_LZO if RAMKERNEL select HAVE_OPROFILE select HAVE_PERF_EVENTS + select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_GENERIC_HARDIRQS select GENERIC_ATOMIC64 select GENERIC_IRQ_PROBE select IRQ_PER_CPU if SMP select HAVE_NMI_WATCHDOG if NMI_WATCHDOG + select GENERIC_SMP_IDLE_THREAD + select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS config GENERIC_CSUM def_bool y @@ -641,9 +644,10 @@ comment "Kernel Timer/Scheduler" source kernel/Kconfig.hz -config GENERIC_CLOCKEVENTS +config SET_GENERIC_CLOCKEVENTS bool "Generic clock events" default y + select GENERIC_CLOCKEVENTS menu "Clock event device" depends on GENERIC_CLOCKEVENTS @@ -677,12 +681,6 @@ config GPTMR0_CLOCKSOURCE depends on !TICKSOURCE_GPTMR0 endmenu -config ARCH_USES_GETTIMEOFFSET - depends on !GENERIC_CLOCKEVENTS - def_bool y - -source kernel/time/Kconfig - comment "Misc" choice @@ -1308,7 +1306,7 @@ config PM_BFIN_WAKE_GP (all processors, except ADSP-BF549). This option sets the general-purpose wake-up enable (GPWE) control bit to enable wake-up upon detection of an active low signal on the /GPW (PH7) pin. - On ADSP-BF549 this option enables the the same functionality on the + On ADSP-BF549 this option enables the same functionality on the /MRXON pin also PH7. config PM_BFIN_WAKE_PA15 diff --git a/arch/blackfin/Makefile b/arch/blackfin/Makefile index 74fdf679da0..d3d7e64ca96 100644 --- a/arch/blackfin/Makefile +++ b/arch/blackfin/Makefile @@ -109,8 +109,6 @@ KBUILD_AFLAGS += -mcpu=$(CPU_REV) CHECKFLAGS_SILICON = $(shell echo "" | $(CPP) $(KBUILD_CFLAGS) -dD - 2>/dev/null | awk '$$2 == "__SILICON_REVISION__" { print $$3 }') CHECKFLAGS += -D__SILICON_REVISION__=$(CHECKFLAGS_SILICON) -D__bfin__ -head-y := arch/$(ARCH)/kernel/init_task.o - core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/ arch/$(ARCH)/mach-common/ # If we have a machine-specific directory, then include it in the build. diff --git a/arch/blackfin/include/asm/kvm_para.h b/arch/blackfin/include/asm/kvm_para.h new file mode 100644 index 00000000000..14fab8f0b95 --- /dev/null +++ b/arch/blackfin/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/blackfin/include/asm/posix_types.h b/arch/blackfin/include/asm/posix_types.h index 41bc1875c4d..1bd3436db6a 100644 --- a/arch/blackfin/include/asm/posix_types.h +++ b/arch/blackfin/include/asm/posix_types.h @@ -10,9 +10,6 @@ typedef unsigned short __kernel_mode_t; #define __kernel_mode_t __kernel_mode_t -typedef unsigned short __kernel_nlink_t; -#define __kernel_nlink_t __kernel_nlink_t - typedef unsigned int __kernel_ipc_pid_t; #define __kernel_ipc_pid_t __kernel_ipc_pid_t diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h index 8af7772e84c..4ef7cfe43ce 100644 --- a/arch/blackfin/include/asm/processor.h +++ b/arch/blackfin/include/asm/processor.h @@ -75,8 +75,6 @@ static inline void release_thread(struct task_struct *dead_task) { } -#define prepare_to_copy(tsk) do { } while (0) - extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags); /* diff --git a/arch/blackfin/include/asm/thread_info.h b/arch/blackfin/include/asm/thread_info.h index 02560fd8a12..53ad10005ae 100644 --- a/arch/blackfin/include/asm/thread_info.h +++ b/arch/blackfin/include/asm/thread_info.h @@ -100,7 +100,6 @@ static inline struct thread_info *current_thread_info(void) TIF_NEED_RESCHED */ #define TIF_MEMDIE 4 /* is terminating due to OOM killer */ #define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */ -#define TIF_FREEZE 6 /* is freezing for suspend */ #define TIF_IRQ_SYNC 7 /* sync pipeline stage */ #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ #define TIF_SINGLESTEP 9 @@ -111,7 +110,6 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) #define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) -#define _TIF_FREEZE (1<<TIF_FREEZE) #define _TIF_IRQ_SYNC (1<<TIF_IRQ_SYNC) #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) #define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) diff --git a/arch/blackfin/kernel/Makefile b/arch/blackfin/kernel/Makefile index 9a0d6d70644..08e6625106b 100644 --- a/arch/blackfin/kernel/Makefile +++ b/arch/blackfin/kernel/Makefile @@ -2,7 +2,7 @@ # arch/blackfin/kernel/Makefile # -extra-y := init_task.o vmlinux.lds +extra-y := vmlinux.lds obj-y := \ entry.o process.o bfin_ksyms.o ptrace.o setup.o signal.o \ diff --git a/arch/blackfin/kernel/init_task.c b/arch/blackfin/kernel/init_task.c deleted file mode 100644 index d3970e8acd1..00000000000 --- a/arch/blackfin/kernel/init_task.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright 2004-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later - */ - -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/init_task.h> -#include <linux/mqueue.h> -#include <linux/fs.h> - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ -struct task_struct init_task = INIT_TASK(init_task); -EXPORT_SYMBOL(init_task); - -/* - * Initial thread structure. - * - * We need to make sure that this is 8192-byte aligned due to the - * way process stacks are handled. This is done by having a special - * "init_task" linker map entry. - */ -union thread_union init_thread_union - __init_task_data = { -INIT_THREAD_INFO(init_task)}; diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c index d536f35d1f4..6682b73a852 100644 --- a/arch/blackfin/kernel/signal.c +++ b/arch/blackfin/kernel/signal.c @@ -19,8 +19,6 @@ #include <asm/fixed_code.h> #include <asm/syscall.h> -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - /* Location of the trace bit in SYSCFG. */ #define TRACE_BITS 0x0001 @@ -98,11 +96,7 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused) if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) goto badframe; - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (rt_restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0)) goto badframe; @@ -193,17 +187,22 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ - wrusp((unsigned long)frame); if (current->personality & FDPIC_FUNCPTRS) { struct fdpic_func_descriptor __user *funcptr = (struct fdpic_func_descriptor *) ka->sa.sa_handler; - __get_user(regs->pc, &funcptr->text); - __get_user(regs->p3, &funcptr->GOT); + u32 pc, p3; + err |= __get_user(pc, &funcptr->text); + err |= __get_user(p3, &funcptr->GOT); + if (err) + return -EFAULT; + regs->pc = pc; + regs->p3 = p3; } else regs->pc = (unsigned long)ka->sa.sa_handler; + wrusp((unsigned long)frame); regs->rets = SIGRETURN_STUB; regs->r0 = frame->sig; @@ -211,12 +210,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, regs->r2 = (unsigned long)(&frame->uc); return 0; - - give_sigsegv: - if (sig == SIGSEGV) - ka->sa.sa_handler = SIG_DFL; - force_sig(SIGSEGV, current); - return -EFAULT; } static inline void @@ -252,30 +245,21 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) /* * OK, we're invoking a handler */ -static int +static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { - int ret; - /* are we from a system call? to see pt_regs->orig_p0 */ if (regs->orig_p0 >= 0) /* If so, check system call restarting.. */ handle_restart(regs, ka, 1); /* set up the stack frame */ - ret = setup_rt_frame(sig, ka, info, oldset, regs); - - if (ret == 0) { - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - } - return ret; + if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0) + force_sigsegv(sig, current); + else + signal_delivered(sig, info, ka, regs, + test_thread_flag(TIF_SINGLESTEP)); } /* @@ -292,37 +276,16 @@ asmlinkage void do_signal(struct pt_regs *regs) siginfo_t info; int signr; struct k_sigaction ka; - sigset_t *oldset; current->thread.esp0 = (unsigned long)regs; - if (try_to_freeze()) - goto no_signal; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { - /* a signal was successfully delivered; the saved - * sigmask will have been stored in the signal frame, - * and will be restored by sigreturn, so we can simply - * clear the TIF_RESTORE_SIGMASK flag */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - clear_thread_flag(TIF_RESTORE_SIGMASK); - - tracehook_signal_handler(signr, &info, &ka, regs, - test_thread_flag(TIF_SINGLESTEP)); - } - + handle_signal(signr, &info, &ka, regs); return; } - no_signal: /* Did we come from a system call? */ if (regs->orig_p0 >= 0) /* Restart the system call - no handlers present */ @@ -330,10 +293,7 @@ asmlinkage void do_signal(struct pt_regs *regs) /* if there's no signal to deliver, we just put the saved sigmask * back */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } + restore_saved_sigmask(); } /* @@ -341,14 +301,12 @@ asmlinkage void do_signal(struct pt_regs *regs) */ asmlinkage void do_notify_resume(struct pt_regs *regs) { - if (test_thread_flag(TIF_SIGPENDING) || test_thread_flag(TIF_RESTORE_SIGMASK)) + if (test_thread_flag(TIF_SIGPENDING)) do_signal(regs); if (test_thread_flag(TIF_NOTIFY_RESUME)) { clear_thread_flag(TIF_NOTIFY_RESUME); tracehook_notify_resume(regs); - if (current->replacement_session_keyring) - key_replace_session_keyring(); } } diff --git a/arch/blackfin/kernel/trace.c b/arch/blackfin/kernel/trace.c index 44bbf2f564c..f7f7a18abca 100644 --- a/arch/blackfin/kernel/trace.c +++ b/arch/blackfin/kernel/trace.c @@ -10,6 +10,8 @@ #include <linux/hardirq.h> #include <linux/thread_info.h> #include <linux/mm.h> +#include <linux/oom.h> +#include <linux/sched.h> #include <linux/uaccess.h> #include <linux/module.h> #include <linux/kallsyms.h> @@ -27,8 +29,7 @@ void decode_address(char *buf, unsigned long address) { struct task_struct *p; struct mm_struct *mm; - unsigned long flags, offset; - unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); + unsigned long offset; struct rb_node *n; #ifdef CONFIG_KALLSYMS @@ -112,17 +113,17 @@ void decode_address(char *buf, unsigned long address) * mappings of all our processes and see if we can't be a whee * bit more specific */ - write_lock_irqsave(&tasklist_lock, flags); + read_lock(&tasklist_lock); for_each_process(p) { - mm = (in_atomic ? p->mm : get_task_mm(p)); - if (!mm) - continue; + struct task_struct *t; - if (!down_read_trylock(&mm->mmap_sem)) { - if (!in_atomic) - mmput(mm); + t = find_lock_task_mm(p); + if (!t) continue; - } + + mm = t->mm; + if (!down_read_trylock(&mm->mmap_sem)) + goto __continue; for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) { struct vm_area_struct *vma; @@ -131,7 +132,7 @@ void decode_address(char *buf, unsigned long address) if (address >= vma->vm_start && address < vma->vm_end) { char _tmpbuf[256]; - char *name = p->comm; + char *name = t->comm; struct file *file = vma->vm_file; if (file) { @@ -164,8 +165,7 @@ void decode_address(char *buf, unsigned long address) name, vma->vm_start, vma->vm_end); up_read(&mm->mmap_sem); - if (!in_atomic) - mmput(mm); + task_unlock(t); if (buf[0] == '\0') sprintf(buf, "[ %s ] dynamic memory", name); @@ -175,8 +175,8 @@ void decode_address(char *buf, unsigned long address) } up_read(&mm->mmap_sem); - if (!in_atomic) - mmput(mm); +__continue: + task_unlock(t); } /* @@ -186,7 +186,7 @@ void decode_address(char *buf, unsigned long address) sprintf(buf, "/* kernel dynamic memory */"); done: - write_unlock_irqrestore(&tasklist_lock, flags); + read_unlock(&tasklist_lock); } #define EXPAND_LEN ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 256 - 1) diff --git a/arch/blackfin/mach-bf561/boards/acvilon.c b/arch/blackfin/mach-bf561/boards/acvilon.c index f6ffd6f054c..0b74218fdd3 100644 --- a/arch/blackfin/mach-bf561/boards/acvilon.c +++ b/arch/blackfin/mach-bf561/boards/acvilon.c @@ -248,8 +248,6 @@ static struct platform_device bfin_uart0_device = { #if defined(CONFIG_MTD_NAND_PLATFORM) || defined(CONFIG_MTD_NAND_PLATFORM_MODULE) -const char *part_probes[] = { "cmdlinepart", NULL }; - static struct mtd_partition bfin_plat_nand_partitions[] = { { .name = "params(nand)", @@ -289,7 +287,6 @@ static struct platform_nand_data bfin_plat_nand_data = { .chip = { .nr_chips = 1, .chip_delay = 30, - .part_probe_types = part_probes, .partitions = bfin_plat_nand_partitions, .nr_partitions = ARRAY_SIZE(bfin_plat_nand_partitions), }, diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 80aa2535e2c..04c2fbe41a7 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -711,8 +711,6 @@ ENTRY(_system_call) jump .Lresume_userspace_1; .Lsyscall_sigpending: - cc = BITTST(r7, TIF_RESTORE_SIGMASK); - if cc jump .Lsyscall_do_signals; cc = BITTST(r7, TIF_SIGPENDING); if cc jump .Lsyscall_do_signals; cc = BITTST(r7, TIF_NOTIFY_RESUME); diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index ac8f8a43158..00bbe672b3b 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -340,27 +340,10 @@ void smp_send_stop(void) return; } -int __cpuinit __cpu_up(unsigned int cpu) +int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle) { int ret; - struct blackfin_cpudata *ci = &per_cpu(cpu_data, cpu); - struct task_struct *idle = ci->idle; - if (idle) { - free_task(idle); - idle = NULL; - } - - if (!idle) { - idle = fork_idle(cpu); - if (IS_ERR(idle)) { - printk(KERN_ERR "CPU%u: fork() failed\n", cpu); - return PTR_ERR(idle); - } - ci->idle = idle; - } else { - init_idle(idle, cpu); - } secondary_stack = task_stack_page(idle) + THREAD_SIZE; ret = platform_boot_secondary(cpu, idle); |