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authorAnton Blanchard <anton@samba.org>2010-03-05 13:42:55 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:26:33 -0800
commit8aeee85a29e27e043db582bf2ae8e5f42767934f (patch)
treefac5fc9b79dc272517918722e944b86f36a7e608 /kernel/pid.c
parent78d7d407b62a021e6d2e8dc24c0b90e390ab58a1 (diff)
downloadlinux-8aeee85a29e27e043db582bf2ae8e5f42767934f.tar.gz
panic: fix panic_timeout accuracy when running on a hypervisor
I've had some complaints about panic_timeout being wildly innacurate on shared processor PowerPC partitions (a 3 minute panic_timeout taking 30 minutes). The problem is we loop on mdelay(1) and with a 1ms in 10ms hypervisor timeslice each of these will take 10ms (ie 10x) longer. I expect other platforms with shared processor hypervisors will see the same issue. This patch keeps the old behaviour if we have a panic_blink (only keyboard LEDs right now) and does 1 second mdelays if we don't. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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