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powerpc/booke64: Check napping in performance monitor interrupt 

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