From e48673360b8b113ca83dc3a45e02ad37fdf9f2d0 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Thu, 26 Sep 2013 16:23:56 +0800 Subject: [PATCH] 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 Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/exceptions-64e.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 2d067049db27..68d74b45232d 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -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 -- 2.20.1