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authorJiri Slaby <jslaby@suse.cz>2010-03-05 13:42:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:26:33 -0800
commit78d7d407b62a021e6d2e8dc24c0b90e390ab58a1 (patch)
tree8c1074b84db4b977bad6802a3701e0113c0a7739 /kernel/sched_rt.c
parentd4bb527438b4181cd3c564ae04dd344c381283a1 (diff)
downloadlinux-78d7d407b62a021e6d2e8dc24c0b90e390ab58a1.tar.bz2
kernel core: use helpers for rlimits
Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in commit 3e10e716abf3 ("resource: add helpers for fetching rlimits") or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched_rt.c')
-rw-r--r--kernel/sched_rt.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index bf3e38fdbe6d..5a6ed1f0990a 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1662,8 +1662,9 @@ static void watchdog(struct rq *rq, struct task_struct *p)
if (!p->signal)
return;
- soft = p->signal->rlim[RLIMIT_RTTIME].rlim_cur;
- hard = p->signal->rlim[RLIMIT_RTTIME].rlim_max;
+ /* max may change after cur was read, this will be fixed next tick */
+ soft = task_rlimit(p, RLIMIT_RTTIME);
+ hard = task_rlimit_max(p, RLIMIT_RTTIME);
if (soft != RLIM_INFINITY) {
unsigned long next;