From patchwork Mon Sep 19 09:59:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 12980043 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B383C6FA98 for ; Mon, 19 Sep 2022 10:17:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230092AbiISKRL (ORCPT ); Mon, 19 Sep 2022 06:17:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229837AbiISKRG (ORCPT ); Mon, 19 Sep 2022 06:17:06 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55C3321803; Mon, 19 Sep 2022 03:17:02 -0700 (PDT) DKIM-Signature: v=1; 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Mon, 19 Sep 2022 12:16:24 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id EBD782BA4903E; Mon, 19 Sep 2022 12:16:21 +0200 (CEST) Message-ID: <20220919101520.936337959@infradead.org> User-Agent: quilt/0.66 Date: Mon, 19 Sep 2022 11:59:48 +0200 From: Peter Zijlstra To: peterz@infradead.org Cc: richard.henderson@linaro.org, ink@jurassic.park.msu.ru, mattst88@gmail.com, vgupta@kernel.org, linux@armlinux.org.uk, ulli.kroll@googlemail.com, linus.walleij@linaro.org, shawnguo@kernel.org, Sascha Hauer , kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, tony@atomide.com, khilman@kernel.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, bcain@quicinc.com, chenhuacai@kernel.org, kernel@xen0n.name, geert@linux-m68k.org, sammy@sammy.net, monstr@monstr.eu, tsbogend@alpha.franken.de, dinguyen@kernel.org, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, ysato@users.sourceforge.jp, dalias@libc.org, davem@davemloft.net, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, jgross@suse.com, srivatsa@csail.mit.edu, amakhalov@vmware.com, pv-drivers@vmware.com, boris.ostrovsky@oracle.com, chris@zankel.net, jcmvbkbc@gmail.com, rafael@kernel.org, lenb@kernel.org, pavel@ucw.cz, gregkh@linuxfoundation.org, mturquette@baylibre.com, sboyd@kernel.org, daniel.lezcano@linaro.org, lpieralisi@kernel.org, sudeep.holla@arm.com, agross@kernel.org, bjorn.andersson@linaro.org, konrad.dybcio@somainline.org, anup@brainfault.org, thierry.reding@gmail.com, jonathanh@nvidia.com, jacob.jun.pan@linux.intel.com, atishp@atishpatra.org, Arnd Bergmann , yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, dennis@kernel.org, tj@kernel.org, cl@linux.com, rostedt@goodmis.org, pmladek@suse.com, senozhatsky@chromium.org, john.ogness@linutronix.de, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, fweisbec@gmail.com, ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.com, dvyukov@google.com, vincenzo.frascino@arm.com, Andrew Morton , jpoimboe@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-omap@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-perf-users@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-xtensa@linux-xtensa.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arch@vger.kernel.org, kasan-dev@googlegroups.com Subject: [PATCH v2 09/44] cpuidle,omap3: Push RCU-idle into driver References: <20220919095939.761690562@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Doing RCU-idle outside the driver, only to then teporarily enable it again before going idle is daft. Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tony Lindgren Tested-by: Tony Lindgren Reviewed-by: Frederic Weisbecker --- arch/arm/mach-omap2/cpuidle34xx.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -133,7 +133,9 @@ static int omap3_enter_idle(struct cpuid } /* Execute ARM wfi */ + ct_idle_enter(); omap_sram_idle(); + ct_idle_exit(); /* * Call idle CPU PM enter notifier chain to restore @@ -265,6 +267,7 @@ static struct cpuidle_driver omap3_idle_ .owner = THIS_MODULE, .states = { { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 2 + 2, .target_residency = 5, @@ -272,6 +275,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 10 + 10, .target_residency = 30, @@ -279,6 +283,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 50 + 50, .target_residency = 300, @@ -286,6 +291,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU RET + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 1500 + 1800, .target_residency = 4000, @@ -293,6 +299,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU OFF + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 2500 + 7500, .target_residency = 12000, @@ -300,6 +307,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU RET + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 3000 + 8500, .target_residency = 15000, @@ -307,6 +315,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU OFF + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 10000 + 30000, .target_residency = 30000, @@ -328,6 +337,7 @@ static struct cpuidle_driver omap3430_id .owner = THIS_MODULE, .states = { { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 110 + 162, .target_residency = 5, @@ -335,6 +345,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 106 + 180, .target_residency = 309, @@ -342,6 +353,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 107 + 410, .target_residency = 46057, @@ -349,6 +361,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU RET + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 121 + 3374, .target_residency = 46057, @@ -356,6 +369,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU OFF + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 855 + 1146, .target_residency = 46057, @@ -363,6 +377,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU RET + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 7580 + 4134, .target_residency = 484329, @@ -370,6 +385,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU OFF + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 7505 + 15274, .target_residency = 484329,