powerpc/eeh: Single kthread to handle events

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We possiblly have multiple kthreads running for multiple EEH errors
(events) and use one spinlock to make the process of handling those
EEH events serialized. That's unnecessary and the patch creates only
one kthread, which is started during EEH core initialization time in
eeh_init(). A new semaphore introduced to count the number of existing
EEH events in the queue and the kthread waiting on the semaphore.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Gavin Shan 2013-06-20 13:21:00 +08:00 • committed by Benjamin Herrenschmidt

parent 26a74850b3

commit c86085580d

3 changed files with 55 additions and 47 deletions

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1

arch/powerpc/include/asm/eeh_event.h

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5

arch/powerpc/kernel/eeh.c

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90

arch/powerpc/kernel/eeh_event.c

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