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authorThomas Gleixner <tglx@linutronix.de>2008-09-29 15:47:42 +0200
committerThomas Gleixner <tglx@linutronix.de>2008-09-29 17:09:14 +0200
commitccc7dadf736639da86f3e0c86832c11a66fc8221 (patch)
tree3f1c0df0a291fec4a10d72cc1ab278ad81e697c5 /kernel/time/tick-sched.c
parenthrtimer: mark migration state (diff)
downloadlinux-ccc7dadf736639da86f3e0c86832c11a66fc8221.tar.xz
linux-ccc7dadf736639da86f3e0c86832c11a66fc8221.zip
hrtimer: prevent migration of per CPU hrtimers
Impact: per CPU hrtimers can be migrated from a dead CPU The hrtimer code has no knowledge about per CPU timers, but we need to prevent the migration of such timers and warn when such a timer is active at migration time. Explicitely mark the timers as per CPU and use a more understandable mode descriptor for the interrupts safe unlocked callback mode, which is used by hrtimer_sleeper and the scheduler code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/tick-sched.c')
-rw-r--r--kernel/time/tick-sched.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 39019b3f7621..cb02324bdb88 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -625,7 +625,7 @@ void tick_setup_sched_timer(void)
*/
hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
ts->sched_timer.function = tick_sched_timer;
- ts->sched_timer.cb_mode = HRTIMER_CB_IRQSAFE_NO_SOFTIRQ;
+ ts->sched_timer.cb_mode = HRTIMER_CB_IRQSAFE_PERCPU;
/* Get the next period (per cpu) */
ts->sched_timer.expires = tick_init_jiffy_update();