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hrtimer: fix hrtimer_init_sleeper() users

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this patch:

 commit 37bb6cb409
 Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
 Date:   Fri Jan 25 21:08:32 2008 +0100

     hrtimer: unlock hrtimer_wakeup

Broke hrtimer_init_sleeper() users. It forgot to fix up the futex
caller of this function to detect the failed queueing and messed up
the do_nanosleep() caller in that it could leak a TASK_INTERRUPTIBLE
state.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2008-02-01 17:45:13 +01:00 committed by Ingo Molnar
parent 24e1c13c93
commit 3588a085cd
2 changed files with 4 additions and 0 deletions
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2
kernel/futex.c
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@ -1252,6 +1252,8 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
t.timer.expires = *abs_time;
hrtimer_start(&t.timer, t.timer.expires, HRTIMER_MODE_ABS);
if (!hrtimer_active(&t.timer))
t.task = NULL;
/*
* the timer could have already expired, in which

2
kernel/hrtimer.c
View file

@ -1315,6 +1315,8 @@ static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mod
} while (t->task && !signal_pending(current));
__set_current_state(TASK_RUNNING);
return t->task == NULL;
}