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| author | Gavin Shan <shangw@linux.vnet.ibm.com> | 2013-06-25 14:35:28 +0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-25 17:24:41 +1000 |
| commit | 5459ae1431f5d22ab10fa8b56fb16c018289fdfc (patch) | |
| tree | a8409c1d4dc81d7dd31d9065b29ea56d66c3b606 /arch/powerpc/kernel | |
| parent | ef6a28577398df2853abf123cb4a2e0c57eb879a (diff) | |
| download | blackbird-obmc-linux-5459ae1431f5d22ab10fa8b56fb16c018289fdfc.tar.gz blackbird-obmc-linux-5459ae1431f5d22ab10fa8b56fb16c018289fdfc.zip | |
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 <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/eeh_event.c | 3 |
1 files changed, 2 insertions, 1 deletions
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); |
