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add hrtimer specific debugobjects code

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hrtimers have now dynamic users in the network code.  Put them under
debugobjects surveillance as well.

Add calls to the generic object debugging infrastructure and provide fixup
functions which allow to keep the system alive when recoverable problems have
been detected by the object debugging core code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg KH <greg@kroah.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Gleixner 2008-04-30 00:55:04 -07:00 • committed by Linus Torvalds
parent c6f3a97f86
commit 237fc6e7a3
3 changed files with 186 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

17
kernel/futex.c
View file

@ -1266,11 +1266,13 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
if (!abs_time)
schedule();
else {
hrtimer_init(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC,
HRTIMER_MODE_ABS);
hrtimer_init_sleeper(&t, current);
t.timer.expires = *abs_time;
hrtimer_start(&t.timer, t.timer.expires, HRTIMER_MODE_ABS);
hrtimer_start(&t.timer, t.timer.expires,
HRTIMER_MODE_ABS);
if (!hrtimer_active(&t.timer))
t.task = NULL;
@ -1286,6 +1288,8 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
/* Flag if a timeout occured */
rem = (t.task == NULL);
destroy_hrtimer_on_stack(&t.timer);
}
}
__set_current_state(TASK_RUNNING);
@ -1367,7 +1371,8 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
if (time) {
to = &timeout;
hrtimer_init(&to->timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
hrtimer_init_on_stack(&to->timer, CLOCK_REALTIME,
HRTIMER_MODE_ABS);
hrtimer_init_sleeper(to, current);
to->timer.expires = *time;
}
@ -1581,6 +1586,8 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
unqueue_me_pi(&q);
futex_unlock_mm(fshared);
if (to)
destroy_hrtimer_on_stack(&to->timer);
return ret != -EINTR ? ret : -ERESTARTNOINTR;
out_unlock_release_sem:
@ -1588,6 +1595,8 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
out_release_sem:
futex_unlock_mm(fshared);
if (to)
destroy_hrtimer_on_stack(&to->timer);
return ret;
uaddr_faulted:
@ -1615,6 +1624,8 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
if (!ret && (uval != -EFAULT))
goto retry;
if (to)
destroy_hrtimer_on_stack(&to->timer);
return ret;
}