From: Nicholas Piggin <npiggin@gmail.com>
Date: Tue, 13 Jun 2017 13:05:52 +0000 (+1000)
Subject: powerpc/64s/idle: Predict HMI wakeup as unlikely
X-Git-Tag: v4.13-rc1~111^2~85
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=95acdc07124f329ef3088a9bc68af905804b2e6b;p=platform%2Fkernel%2Flinux-exynos.git

powerpc/64s/idle: Predict HMI wakeup as unlikely

In a busy system, idle wakeups can be expected from IPIs and device
interrupts.

Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/kernel/idle_book3s.S b/arch/powerpc/kernel/idle_book3s.S
index ebe80b5..1ea14b9 100644
--- a/arch/powerpc/kernel/idle_book3s.S
+++ b/arch/powerpc/kernel/idle_book3s.S
@@ -306,7 +306,7 @@ FTR_SECTION_ELSE_NESTED(66);						\
 	rlwinm	r0,r12,45-31,0xe;  /* P7 wake reason field is 3 bits */	\
 ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_ARCH_207S, 66);		\
 	cmpwi	r0,0xa;			/* Hypervisor maintenance ? */	\
-	bne	20f;							\
+	bne+	20f;							\
 	/* Invoke opal call to handle hmi */				\
 	ld	r2,PACATOC(r13);					\
 	ld	r1,PACAR1(r13);						\