From 5459ae1431f5d22ab10fa8b56fb16c018289fdfc Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 25 Jun 2013 14:35:28 +0800 Subject: [PATCH] powerpc/eeh: Use interruptible sleep in keehd To replace down() with down_interrutible() to avoid following warning: [c00000007ba7b710] [c000000000014410] .__switch_to+0x1b0/0x380 [c00000007ba7b7c0] [c0000000007b408c] .__schedule+0x3ec/0x970 [c00000007ba7ba50] [c0000000007b1f24] .schedule_timeout+0x1a4/0x2b0 [c00000007ba7bb30] [c0000000007b34a4] .__down+0xa4/0x104 [c00000007ba7bbf0] [c0000000000b9230] .down+0x60/0x70 [c00000007ba7bc80] [c0000000000336d0] .eeh_event_handler+0x70/0x190 [c00000007ba7bd30] [c0000000000b1a58] .kthread+0xe8/0xf0 [c00000007ba7be30] [c00000000000a05c] .ret_from_kernel_thread+0x5c/0x8 This also avoids keeping the load average up while doing nothing. Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/eeh_event.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/eeh_event.c b/arch/powerpc/kernel/eeh_event.c index 39bcd81e7f5d..d27c5afc90ae 100644 --- a/arch/powerpc/kernel/eeh_event.c +++ b/arch/powerpc/kernel/eeh_event.c @@ -55,7 +55,8 @@ static int eeh_event_handler(void * dummy) struct eeh_pe *pe; while (!kthread_should_stop()) { - down(&eeh_eventlist_sem); + if (down_interruptible(&eeh_eventlist_sem)) + break; /* Fetch EEH event from the queue */ spin_lock_irqsave(&eeh_eventlist_lock, flags); -- 2.20.1