diff options
Diffstat (limited to 'arch/arm26')
-rw-r--r-- | arch/arm26/kernel/process.c | 12 | ||||
-rw-r--r-- | arch/arm26/kernel/ptrace.c | 49 |
2 files changed, 6 insertions, 55 deletions
diff --git a/arch/arm26/kernel/process.c b/arch/arm26/kernel/process.c index 9eb9964d32a..15833a0057d 100644 --- a/arch/arm26/kernel/process.c +++ b/arch/arm26/kernel/process.c @@ -74,15 +74,13 @@ __setup("hlt", hlt_setup); void cpu_idle(void) { /* endless idle loop with no priority at all */ - preempt_disable(); while (1) { - while (!need_resched()) { - local_irq_disable(); - if (!need_resched() && !hlt_counter) - local_irq_enable(); - } + while (!need_resched()) + cpu_relax(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); } - schedule(); } static char reboot_mode = 'h'; diff --git a/arch/arm26/kernel/ptrace.c b/arch/arm26/kernel/ptrace.c index cf7e977d18c..4e6b7356a72 100644 --- a/arch/arm26/kernel/ptrace.c +++ b/arch/arm26/kernel/ptrace.c @@ -546,7 +546,7 @@ static int ptrace_setfpregs(struct task_struct *tsk, void *ufp) sizeof(struct user_fp)) ? -EFAULT : 0; } -static int do_ptrace(int request, struct task_struct *child, long addr, long data) +long arch_ptrace(struct task_struct *child, long request, long addr, long data) { unsigned long tmp; int ret; @@ -665,53 +665,6 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat return ret; } -asmlinkage long sys_ptrace(long request, long pid, long addr, long data) -{ - struct task_struct *child; - int ret; - - lock_kernel(); - ret = -EPERM; - if (request == PTRACE_TRACEME) { - /* are we already being traced? */ - if (current->ptrace & PT_PTRACED) - goto out; - ret = security_ptrace(current->parent, current); - if (ret) - goto out; - /* set the ptrace bit in the process flags. */ - current->ptrace |= PT_PTRACED; - ret = 0; - goto out; - } - ret = -ESRCH; - read_lock(&tasklist_lock); - child = find_task_by_pid(pid); - if (child) - get_task_struct(child); - read_unlock(&tasklist_lock); - if (!child) - goto out; - - ret = -EPERM; - if (pid == 1) /* you may not mess with init */ - goto out_tsk; - - if (request == PTRACE_ATTACH) { - ret = ptrace_attach(child); - goto out_tsk; - } - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret == 0) - ret = do_ptrace(request, child, addr, data); - -out_tsk: - put_task_struct(child); -out: - unlock_kernel(); - return ret; -} - asmlinkage void syscall_trace(int why, struct pt_regs *regs) { unsigned long ip; |