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Add TASK_WAKEKILL

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Set TASK_WAKEKILL for TASK_STOPPED and TASK_TRACED, add TASK_KILLABLE and
use TASK_WAKEKILL in signal_wake_up()

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
This commit is contained in:
Matthew Wilcox
2007-12-06 11:13:16 -05:00
committed by Matthew Wilcox
parent 338077e54e
commit f021a3c2b1
2 changed files with 18 additions and 12 deletions
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8
kernel/signal.c
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@@ -456,15 +456,15 @@ void signal_wake_up(struct task_struct *t, int resume)
set_tsk_thread_flag(t, TIF_SIGPENDING);
/*
* For SIGKILL, we want to wake it up in the stopped/traced case.
* We don't check t->state here because there is a race with it
* For SIGKILL, we want to wake it up in the stopped/traced/killable
* case. We don't check t->state here because there is a race with it
* executing another processor and just now entering stopped state.
* By using wake_up_state, we ensure the process will wake up and
* handle its death signal.
*/
mask = TASK_INTERRUPTIBLE;
if (resume)
mask |= TASK_STOPPED | TASK_TRACED;
mask |= TASK_WAKEKILL;
if (!wake_up_state(t, mask))
kick_process(t);
}
@@ -620,7 +620,7 @@ static void handle_stop_signal(int sig, struct task_struct *p)
* Wake up the stopped thread _after_ setting
* TIF_SIGPENDING
*/
state = TASK_STOPPED;
state = __TASK_STOPPED;
if (sig_user_defined(t, SIGCONT) && !sigismember(&t->blocked, SIGCONT)) {
set_tsk_thread_flag(t, TIF_SIGPENDING);
state |= TASK_INTERRUPTIBLE;