Commit-ID: c305d524e5dd3c3c7a6035083e30950bea1b52dc Gitweb: http://git.kernel.org/tip/c305d524e5dd3c3c7a6035083e30950bea1b52dc Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Wed, 2 Feb 2011 17:10:48 +0100 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Tue, 8 Feb 2011 19:37:12 +0100 softirq: Avoid stack switch from ksoftirqd ksoftirqd() calls do_softirq() which switches stacks on several architectures. That makes no sense at all. ksoftirqd's stack is sufficient. Call __do_softirq() directly. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx> Acked-by: David Miller <davem@xxxxxxxxxxxxx> Cc: Paul Mundt <lethal@xxxxxxxxxxxx> Reviewed-by: Frank Rowand <frank.rowand@xxxxxxxxxxx> LKML-Reference: <alpine.LFD.2.00.1102021704530.31804@xxxxxxxxxxxxxxxxxxxxxxx> --- kernel/softirq.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/kernel/softirq.c b/kernel/softirq.c index 68eb5ef..c049046 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -738,7 +738,10 @@ static int run_ksoftirqd(void * __bind_cpu) don't process */ if (cpu_is_offline((long)__bind_cpu)) goto wait_to_die; - do_softirq(); + local_irq_disable(); + if (local_softirq_pending()) + __do_softirq(); + local_irq_enable(); preempt_enable_no_resched(); cond_resched(); preempt_disable(); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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