diff options
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 75761acc77cf..ae60996fedff 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -427,6 +427,7 @@ void flush_signals(struct task_struct *t) spin_unlock_irqrestore(&t->sighand->siglock, flags); } +#ifdef CONFIG_POSIX_TIMERS static void __flush_itimer_signals(struct sigpending *pending) { sigset_t signal, retain; @@ -460,6 +461,7 @@ void flush_itimer_signals(void) __flush_itimer_signals(&tsk->signal->shared_pending); spin_unlock_irqrestore(&tsk->sighand->siglock, flags); } +#endif void ignore_signals(struct task_struct *t) { @@ -567,6 +569,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info) if (!signr) { signr = __dequeue_signal(&tsk->signal->shared_pending, mask, info); +#ifdef CONFIG_POSIX_TIMERS /* * itimer signal ? * @@ -590,6 +593,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info) hrtimer_restart(tmr); } } +#endif } recalc_sigpending(); @@ -611,6 +615,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info) */ current->jobctl |= JOBCTL_STOP_DEQUEUED; } +#ifdef CONFIG_POSIX_TIMERS if ((info->si_code & __SI_MASK) == __SI_TIMER && info->si_sys_private) { /* * Release the siglock to ensure proper locking order @@ -622,6 +627,7 @@ int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info) do_schedule_next_timer(info); spin_lock(&tsk->sighand->siglock); } +#endif return signr; } @@ -2485,6 +2491,13 @@ void __set_current_blocked(const sigset_t *newset) { struct task_struct *tsk = current; + /* + * In case the signal mask hasn't changed, there is nothing we need + * to do. The current->blocked shouldn't be modified by other task. + */ + if (sigequalsets(&tsk->blocked, newset)) + return; + spin_lock_irq(&tsk->sighand->siglock); __set_task_blocked(tsk, newset); spin_unlock_irq(&tsk->sighand->siglock); |