path: root/kernel/trace/trace_sysprof.c
diff options
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/trace/trace_sysprof.c
parentb00c1a99e7758f794923c61e5cd55268d61c9469 (diff)
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/trace/trace_sysprof.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index bb948e52ce20..db58fb66a135 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -202,7 +202,7 @@ static void start_stack_timer(int cpu)
hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
hrtimer->function = stack_trace_timer_fn;
- hrtimer->cb_mode = HRTIMER_CB_IRQSAFE_NO_SOFTIRQ;
+ hrtimer->cb_mode = HRTIMER_CB_IRQSAFE_PERCPU;
hrtimer_start(hrtimer, ns_to_ktime(sample_period), HRTIMER_MODE_REL);

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