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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-08-08 21:47:09 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:46:53 +0200 |
| commit | b845b517b5e3706a3729f6ea83b88ab85f0725b0 (patch) | |
| tree | 4311e4c2e6c3fdbdbe89149d1501944294186455 /kernel/time/tick-sched.c | |
| parent | 796aadeb1b2db9b5d463946766c5bbfd7717158c (diff) | |
| download | op-kernel-dev-b845b517b5e3706a3729f6ea83b88ab85f0725b0.zip op-kernel-dev-b845b517b5e3706a3729f6ea83b88ab85f0725b0.tar.gz | |
printk: robustify printk
Avoid deadlocks against rq->lock and xtime_lock by deferring the klogd
wakeup by polling from the timer tick.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time/tick-sched.c')
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 825b4c0..c13d4f1 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -255,7 +255,7 @@ void tick_nohz_stop_sched_tick(int inidle) next_jiffies = get_next_timer_interrupt(last_jiffies); delta_jiffies = next_jiffies - last_jiffies; - if (rcu_needs_cpu(cpu)) + if (rcu_needs_cpu(cpu) || printk_needs_cpu(cpu)) delta_jiffies = 1; /* * Do not stop the tick, if we are only one off |
