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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-03-13 14:21:27 +0300
committerIngo Molnar <mingo@elte.hu>2009-03-31 16:52:52 +0400
commit7f1e2ca9f04b02794597f60e7b1d43f0a1317939 (patch)
treedad1d80ab4232f3ca12d7ff9a58f0dc76133dab1 /kernel/softirq.c
parent7bee946358c3cb957d4aa648fc5ab3cad0b232d0 (diff)
downloadlinux-7f1e2ca9f04b02794597f60e7b1d43f0a1317939.tar.xz
hrtimer: fix rq->lock inversion (again)
It appears I inadvertly introduced rq->lock recursion to the hrtimer_start() path when I delegated running already expired timers to softirq context. This patch fixes it by introducing a __hrtimer_start_range_ns() method that will not use raise_softirq_irqoff() but __raise_softirq_irqoff() which avoids the wakeup. It then also changes schedule() to check for pending softirqs and do the wakeup then, I'm not quite sure I like this last bit, nor am I convinced its really needed. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org LKML-Reference: <20090313112301.096138802@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/softirq.c')
-rw-r--r--kernel/softirq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 487751604300..accc85197c49 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -58,7 +58,7 @@ static DEFINE_PER_CPU(struct task_struct *, ksoftirqd);
* to the pending events, so lets the scheduler to balance
* the softirq load for us.
*/
-static inline void wakeup_softirqd(void)
+void wakeup_softirqd(void)
{
/* Interrupts are disabled: no need to stop preemption */
struct task_struct *tsk = __get_cpu_var(ksoftirqd);