diff options
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/calls.S | 4 | ||||
| -rw-r--r-- | arch/arm/kernel/entry-header.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/kgdb.c | 13 | ||||
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 9 | ||||
| -rw-r--r-- | arch/arm/kernel/ptrace.c | 60 | ||||
| -rw-r--r-- | arch/arm/kernel/ptrace.h | 14 | ||||
| -rw-r--r-- | arch/arm/kernel/smp.c | 4 | ||||
| -rw-r--r-- | arch/arm/kernel/sys_arm.c | 129 | ||||
| -rw-r--r-- | arch/arm/kernel/sys_oabi-compat.c | 3 | ||||
| -rw-r--r-- | arch/arm/kernel/unwind.c | 4 |
10 files changed, 40 insertions, 202 deletions
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index 9314a2d681f..37ae301cc47 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -91,7 +91,7 @@ CALL(sys_settimeofday) /* 80 */ CALL(sys_getgroups16) CALL(sys_setgroups16) - CALL(OBSOLETE(old_select)) /* used by libc4 */ + CALL(OBSOLETE(sys_old_select)) /* used by libc4 */ CALL(sys_symlink) CALL(sys_ni_syscall) /* was sys_lstat */ /* 85 */ CALL(sys_readlink) @@ -99,7 +99,7 @@ CALL(sys_swapon) CALL(sys_reboot) CALL(OBSOLETE(sys_old_readdir)) /* used by libc4 */ -/* 90 */ CALL(OBSOLETE(old_mmap)) /* used by libc4 */ +/* 90 */ CALL(OBSOLETE(sys_old_mmap)) /* used by libc4 */ CALL(sys_munmap) CALL(sys_truncate) CALL(sys_ftruncate) diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 7e9ed1eea40..d93f976fb38 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -102,6 +102,8 @@ .else ldmdb sp, {r0 - lr}^ @ get calling r0 - lr .endif + mov r0, r0 @ ARMv5T and earlier require a nop + @ after ldm {}^ add sp, sp, #S_FRAME_SIZE - S_PC movs pc, lr @ return & move spsr_svc into cpsr .endm diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c index ba8ccfede96..a5b846b9895 100644 --- a/arch/arm/kernel/kgdb.c +++ b/arch/arm/kernel/kgdb.c @@ -9,6 +9,7 @@ * Authors: George Davis <davis_g@mvista.com> * Deepak Saxena <dsaxena@plexity.net> */ +#include <linux/irq.h> #include <linux/kgdb.h> #include <asm/traps.h> @@ -158,6 +159,18 @@ static struct undef_hook kgdb_compiled_brkpt_hook = { .fn = kgdb_compiled_brk_fn }; +static void kgdb_call_nmi_hook(void *ignored) +{ + kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs()); +} + +void kgdb_roundup_cpus(unsigned long flags) +{ + local_irq_enable(); + smp_call_function(kgdb_call_nmi_hook, NULL, 0); + local_irq_disable(); +} + /** * kgdb_arch_init - Perform any architecture specific initalization. * diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index c54ceb3d1f9..9e70f2053f9 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -332,7 +332,8 @@ armpmu_reserve_hardware(void) for (i = 0; i < pmu_irqs->num_irqs; ++i) { err = request_irq(pmu_irqs->irqs[i], armpmu->handle_irq, - IRQF_DISABLED, "armpmu", NULL); + IRQF_DISABLED | IRQF_NOBALANCING, + "armpmu", NULL); if (err) { pr_warning("unable to request IRQ%d for ARM " "perf counters\n", pmu_irqs->irqs[i]); @@ -965,7 +966,7 @@ armv6pmu_handle_irq(int irq_num, */ armv6_pmcr_write(pmcr); - data.addr = 0; + perf_sample_data_init(&data, 0); cpuc = &__get_cpu_var(cpu_hw_events); for (idx = 0; idx <= armpmu->num_events; ++idx) { @@ -1624,7 +1625,7 @@ enum armv7_counters { /* * EVTSEL: Event selection reg */ -#define ARMV7_EVTSEL_MASK 0x7f /* Mask for writable bits */ +#define ARMV7_EVTSEL_MASK 0xff /* Mask for writable bits */ /* * SELECT: Counter selection reg @@ -1945,7 +1946,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev) */ regs = get_irq_regs(); - data.addr = 0; + perf_sample_data_init(&data, 0); cpuc = &__get_cpu_var(cpu_hw_events); for (idx = 0; idx <= armpmu->num_events; ++idx) { diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 08f899fb76a..3f562a7c0a9 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -452,12 +452,23 @@ void ptrace_cancel_bpt(struct task_struct *child) clear_breakpoint(child, &child->thread.debug.bp[i]); } +void user_disable_single_step(struct task_struct *task) +{ + task->ptrace &= ~PT_SINGLESTEP; + ptrace_cancel_bpt(task); +} + +void user_enable_single_step(struct task_struct *task) +{ + task->ptrace |= PT_SINGLESTEP; +} + /* * Called by kernel/ptrace.c when detaching.. */ void ptrace_disable(struct task_struct *child) { - single_step_disable(child); + user_disable_single_step(child); } /* @@ -753,53 +764,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) ret = ptrace_write_user(child, addr, data); break; - /* - * continue/restart and stop at next (return from) syscall - */ - case PTRACE_SYSCALL: - case PTRACE_CONT: - ret = -EIO; - if (!valid_signal(data)) - break; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - single_step_disable(child); - wake_up_process(child); - ret = 0; - break; - - /* - * make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to - * exit. - */ - case PTRACE_KILL: - single_step_disable(child); - if (child->exit_state != EXIT_ZOMBIE) { - child->exit_code = SIGKILL; - wake_up_process(child); - } - ret = 0; - break; - - /* - * execute single instruction. - */ - case PTRACE_SINGLESTEP: - ret = -EIO; - if (!valid_signal(data)) - break; - single_step_enable(child); - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - /* give it a chance to run. */ - wake_up_process(child); - ret = 0; - break; - case PTRACE_GETREGS: ret = ptrace_getregs(child, (void __user *)data); break; diff --git a/arch/arm/kernel/ptrace.h b/arch/arm/kernel/ptrace.h index def3b6184a7..3926605b82e 100644 --- a/arch/arm/kernel/ptrace.h +++ b/arch/arm/kernel/ptrace.h @@ -14,20 +14,6 @@ extern void ptrace_set_bpt(struct task_struct *); extern void ptrace_break(struct task_struct *, struct pt_regs *); /* - * make sure single-step breakpoint is gone. - */ -static inline void single_step_disable(struct task_struct *task) -{ - task->ptrace &= ~PT_SINGLESTEP; - ptrace_cancel_bpt(task); -} - -static inline void single_step_enable(struct task_struct *task) -{ - task->ptrace |= PT_SINGLESTEP; -} - -/* * Send SIGTRAP if we're single-stepping */ static inline void single_step_trap(struct task_struct *task) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 57162af53dc..577543f3857 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -99,6 +99,7 @@ int __cpuinit __cpu_up(unsigned int cpu) *pmd = __pmd((PHYS_OFFSET & PGDIR_MASK) | PMD_TYPE_SECT | PMD_SECT_AP_WRITE); flush_pmd_entry(pmd); + outer_clean_range(__pa(pmd), __pa(pmd + 1)); /* * We need to tell the secondary core where to find @@ -106,7 +107,8 @@ int __cpuinit __cpu_up(unsigned int cpu) */ secondary_data.stack = task_stack_page(idle) + THREAD_START_SP; secondary_data.pgdir = virt_to_phys(pgd); - wmb(); + __cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data)); + outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1)); /* * Now bring the CPU into our world. diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c index ae4027bd01b..4350f75e578 100644 --- a/arch/arm/kernel/sys_arm.c +++ b/arch/arm/kernel/sys_arm.c @@ -28,135 +28,6 @@ #include <linux/ipc.h> #include <linux/uaccess.h> -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) -{ - int error = -EFAULT; - struct mmap_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - goto out; - - error = -EINVAL; - if (a.offset & ~PAGE_MASK) - goto out; - - error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); -out: - return error; -} - -/* - * Perform the select(nd, in, out, ex, tv) and mmap() system - * calls. - */ - -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); -} - -#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT) -/* - * 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: /* Of course, we don't support iBCS2! */ - return -EINVAL; - } - 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; - } -} -#endif - /* Fork a new task - this creates a new program thread. * This is called indirectly via a small wrapper */ diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c index d59a0cd537f..33ff678e32f 100644 --- a/arch/arm/kernel/sys_oabi-compat.c +++ b/arch/arm/kernel/sys_oabi-compat.c @@ -346,9 +346,6 @@ asmlinkage long sys_oabi_semop(int semid, struct oabi_sembuf __user *tsops, return sys_oabi_semtimedop(semid, tsops, nsops, NULL); } -extern asmlinkage int sys_ipc(uint call, int first, int second, int third, - void __user *ptr, long fifth); - asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third, void __user *ptr, long fifth) { diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index 786ac2b6914..50292cd9c12 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -359,7 +359,9 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) frame.fp = regs->ARM_fp; frame.sp = regs->ARM_sp; frame.lr = regs->ARM_lr; - frame.pc = regs->ARM_pc; + /* PC might be corrupted, use LR in that case. */ + frame.pc = kernel_text_address(regs->ARM_pc) + ? regs->ARM_pc : regs->ARM_lr; } else if (tsk == current) { frame.fp = (unsigned long)__builtin_frame_address(0); frame.sp = current_sp; |