From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x243.google.com (mail-pf0-x243.google.com [IPv6:2607:f8b0:400e:c00::243]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wk90f51cGzDqLs for ; Fri, 9 Jun 2017 01:52:18 +1000 (AEST) Received: by mail-pf0-x243.google.com with SMTP id u1so5584052pfg.1 for ; Thu, 08 Jun 2017 08:52:18 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Cc: Nicholas Piggin , "Gautham R . Shenoy" , "Shreyas B . Prabhu" Subject: [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0 Date: Fri, 9 Jun 2017 01:51:13 +1000 Message-Id: <20170608155113.21300-15-npiggin@gmail.com> In-Reply-To: <20170608155113.21300-1-npiggin@gmail.com> References: <20170608155113.21300-1-npiggin@gmail.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 2*mfmsr and 2*mtmsr can be avoided in the idle sleep/wake code because we know the MSR[EE] is clear. Signed-off-by: Nicholas Piggin --- arch/powerpc/platforms/powernv/idle.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c index 7c83a95f929e..8db49f9c2bd8 100644 --- a/arch/powerpc/platforms/powernv/idle.c +++ b/arch/powerpc/platforms/powernv/idle.c @@ -263,9 +263,9 @@ static unsigned long __power7_idle_type(unsigned long type) if (!prep_irq_for_idle()) return 0; - ppc64_runlatch_off(); + __ppc64_runlatch_off(); srr1 = power7_idle_insn(type); - ppc64_runlatch_on(); + __ppc64_runlatch_on(); return srr1; } @@ -300,9 +300,9 @@ static unsigned long __power9_idle_type(unsigned long stop_psscr_val, psscr = mfspr(SPRN_PSSCR); psscr = (psscr & ~stop_psscr_mask) | stop_psscr_val; - ppc64_runlatch_off(); + __ppc64_runlatch_off(); srr1 = power9_idle_stop(psscr); - ppc64_runlatch_on(); + __ppc64_runlatch_on(); trace_hardirqs_off(); @@ -336,7 +336,7 @@ unsigned long pnv_cpu_offline(unsigned int cpu) unsigned long srr1; u32 idle_states = pnv_get_supported_cpuidle_states(); - ppc64_runlatch_off(); + __ppc64_runlatch_off(); if (cpu_has_feature(CPU_FTR_ARCH_300) && deepest_stop_found) { unsigned long psscr; @@ -363,7 +363,7 @@ unsigned long pnv_cpu_offline(unsigned int cpu) HMT_medium(); } - ppc64_runlatch_on(); + __ppc64_runlatch_on(); return srr1; } -- 2.11.0