diff options
Diffstat (limited to 'arch/ia64/kernel')
-rw-r--r-- | arch/ia64/kernel/ptrace.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index a19acd9f5e1f..a45f529046c3 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -618,63 +618,6 @@ void ia64_sync_krbs(void) } /* - * After PTRACE_ATTACH, a thread's register backing store area in user - * space is assumed to contain correct data whenever the thread is - * stopped. arch_ptrace_stop takes care of this on tracing stops. - * But if the child was already stopped for job control when we attach - * to it, then it might not ever get into ptrace_stop by the time we - * want to examine the user memory containing the RBS. - */ -void -ptrace_attach_sync_user_rbs (struct task_struct *child) -{ - int stopped = 0; - struct unw_frame_info info; - - /* - * If the child is in TASK_STOPPED, we need to change that to - * TASK_TRACED momentarily while we operate on it. This ensures - * that the child won't be woken up and return to user mode while - * we are doing the sync. (It can only be woken up for SIGKILL.) - */ - - read_lock(&tasklist_lock); - if (child->sighand) { - spin_lock_irq(&child->sighand->siglock); - if (READ_ONCE(child->__state) == TASK_STOPPED && - !test_and_set_tsk_thread_flag(child, TIF_RESTORE_RSE)) { - set_notify_resume(child); - - WRITE_ONCE(child->__state, TASK_TRACED); - stopped = 1; - } - spin_unlock_irq(&child->sighand->siglock); - } - read_unlock(&tasklist_lock); - - if (!stopped) - return; - - unw_init_from_blocked_task(&info, child); - do_sync_rbs(&info, ia64_sync_user_rbs); - - /* - * Now move the child back into TASK_STOPPED if it should be in a - * job control stop, so that SIGCONT can be used to wake it up. - */ - read_lock(&tasklist_lock); - if (child->sighand) { - spin_lock_irq(&child->sighand->siglock); - if (READ_ONCE(child->__state) == TASK_TRACED && - (child->signal->flags & SIGNAL_STOP_STOPPED)) { - WRITE_ONCE(child->__state, TASK_STOPPED); - } - spin_unlock_irq(&child->sighand->siglock); - } - read_unlock(&tasklist_lock); -} - -/* * Write f32-f127 back to task->thread.fph if it has been modified. */ inline void |