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powerpc/booke64: Check napping in performance monitor interrupt

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The performance monitor interrupt is asynchronous, so we should check
if the current processor is in napping status in the handler of this
interrupt.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kevin Hao 2013-09-26 16:23:56 +08:00 committed by Benjamin Herrenschmidt
parent cf05996571
commit e48673360b
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kernel/exceptions-64e.S
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@ -607,6 +607,7 @@ kernel_dbg_exc:
NORMAL_EXCEPTION_PROLOG(0x260, BOOKE_INTERRUPT_PERFORMANCE_MONITOR,
PROLOG_ADDITION_NONE)
EXCEPTION_COMMON(0x260, PACA_EXGEN, INTS_DISABLE)
CHECK_NAPPING()
addi r3,r1,STACK_FRAME_OVERHEAD
bl .performance_monitor_exception
b .ret_from_except_lite