From patchwork Sun Jun 11 23:58:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 774416 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wmDDy0W2Wz9s3s for ; Mon, 12 Jun 2017 10:25:06 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="pwn2JrfP"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3wmDDx6WrFzDqRF for ; Mon, 12 Jun 2017 10:25:05 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="pwn2JrfP"; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from mail-pf0-x242.google.com (mail-pf0-x242.google.com [IPv6:2607:f8b0:400e:c00::242]) (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 3wmCj64MB3zDqLN for ; Mon, 12 Jun 2017 10:00:58 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="pwn2JrfP"; dkim-atps=neutral Received: by mail-pf0-x242.google.com with SMTP id w12so4684619pfk.0 for ; Sun, 11 Jun 2017 17:00:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Va6xMqI/ziGpbnVuCua2aghgOubtXC7JNvzGldc+vGA=; b=pwn2JrfPzZ9aknaFvRiNUyvVaaff2OQ4Hd0XAhSz2kcnlNebxVEQLn9bJpo+g4KOB0 R1//ZeTqxXjEyRlg5QhZulj+O9om4cBqMdo9D2DLnhdRWo9LehMhXEuvYXIg6Cth3YTV rdfWou+J7J0tDp5NPdlO1nhwgXPIgseslsafFuPXnT/23pRL241K7F3iu1xDuHkTCcCK 5tvXHVaW4/pF4wrmgSaH0d9kvP04t3yuPeDiLrUBA7gFLAVboRxonEVpcY33LFGishQF QJ/f5j4fbPbqE5ntNT3yk6AJP6ZfpypnCT+i9WTuV/BNglM+6SESKdNcDtCSeAJ6B1mh 3f7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Va6xMqI/ziGpbnVuCua2aghgOubtXC7JNvzGldc+vGA=; b=kmqRUt/mrnZhmr9XyvGSc5LAsQvlivGIuXeQAkzc0YIirg4GQiuTeg2B5EhugvN4o/ 9Atbpwn5UokEgkppGSAGnwN1Q04T2VyuerSxmXRBNpzhqk4zmCTxxWVden5X/NVOc+5/ w4Gw4Ub55hIv6AWFmlOensomkQMgUNxEr3Y2Lv8RvsptizhmfMiXT/+QEuqVDg2FS2Jr cO6z5xPhl3VT1t3Mc9zIMT2LhZtTNAr8/oOkK54tNvOCcwSyWqrzDfyuvQ+6ddliFETT qA/Te+EavR8yII4O+jcPHsTCXurIhSnvxl5BIapekw00SF5kxop9c4Ljs0PagtqdBY+w y1OA== X-Gm-Message-State: AODbwcCkVHEPgxIgQV77VDuyDAXyUkHJxO1ADsEcd27L8GqmyVWS0+iA vicvC016qMjOEmgt X-Received: by 10.84.236.71 with SMTP id h7mr52917769pln.86.1497225656613; Sun, 11 Jun 2017 17:00:56 -0700 (PDT) Received: from roar.au.ibm.com ([210.185.119.63]) by smtp.gmail.com with ESMTPSA id c14sm14427211pfk.42.2017.06.11.17.00.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 11 Jun 2017 17:00:55 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0 Date: Mon, 12 Jun 2017 09:58:35 +1000 Message-Id: <20170611235835.7400-15-npiggin@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170611235835.7400-1-npiggin@gmail.com> References: <20170611235835.7400-1-npiggin@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Gautham R . Shenoy" , Nicholas Piggin , "Shreyas B . Prabhu" Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 Acked-by: Vaidyanathan Srinivasan --- 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 ee416e016387..84c55a5ef7ea 100644 --- a/arch/powerpc/platforms/powernv/idle.c +++ b/arch/powerpc/platforms/powernv/idle.c @@ -291,9 +291,9 @@ static unsigned long __power7_idle_type(unsigned long type) if (!prep_irq_for_idle_irqsoff()) return 0; - ppc64_runlatch_off(); + __ppc64_runlatch_off(); srr1 = power7_idle_insn(type); - ppc64_runlatch_on(); + __ppc64_runlatch_on(); fini_irq_for_idle_irqsoff(); @@ -328,9 +328,9 @@ 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(); fini_irq_for_idle_irqsoff(); @@ -365,7 +365,7 @@ 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; @@ -392,7 +392,7 @@ unsigned long pnv_cpu_offline(unsigned int cpu) HMT_medium(); } - ppc64_runlatch_on(); + __ppc64_runlatch_on(); return srr1; }