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| author | Thomas Gleixner <tglx@linutronix.de> | 2008-09-29 15:47:42 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-09-29 17:09:14 +0200 |
| commit | ccc7dadf736639da86f3e0c86832c11a66fc8221 (patch) | |
| tree | 3f1c0df0a291fec4a10d72cc1ab278ad81e697c5 /kernel/trace | |
| parent | b00c1a99e7758f794923c61e5cd55268d61c9469 (diff) | |
| download | linux-ccc7dadf736639da86f3e0c86832c11a66fc8221.tar.gz linux-ccc7dadf736639da86f3e0c86832c11a66fc8221.tar.bz2 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/trace')
| -rw-r--r-- | kernel/trace/trace_sysprof.c | 2 |
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); } |