From patchwork Thu Jan 12 19:43:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 13099069 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 01819C678DC for ; Thu, 12 Jan 2023 20:06:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239903AbjALUGw (ORCPT ); Thu, 12 Jan 2023 15:06:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233105AbjALT7P (ORCPT ); Thu, 12 Jan 2023 14:59:15 -0500 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C970BFEF; Thu, 12 Jan 2023 11:58:06 -0800 (PST) DKIM-Signature: v=1; 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Thu, 12 Jan 2023 20:57:07 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 892382CCF1F46; Thu, 12 Jan 2023 20:57:07 +0100 (CET) Message-ID: <20230112194314.845371875@infradead.org> User-Agent: quilt/0.66 Date: Thu, 12 Jan 2023 20:43:14 +0100 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, nsekhar@ti.com, brgl@bgdev.pl, 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, krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com, 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, andersson@kernel.org, konrad.dybcio@linaro.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, mhiramat@kernel.org, frederic@kernel.org, paulmck@kernel.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, 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-samsung-soc@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, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, kasan-dev@googlegroups.com Subject: [PATCH v3 00/51] cpuidle,rcu: Clean up the mess Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Hi All! The (hopefully) final respin of cpuidle vs rcu cleanup patches. Barring any objections I'll be queueing these patches in tip/sched/core in the next few days. v2: https://lkml.kernel.org/r/20220919095939.761690562@infradead.org These here patches clean up the mess that is cpuidle vs rcuidle. At the end of the ride there's only on RCU_NONIDLE user left: arch/arm64/kernel/suspend.c: RCU_NONIDLE(__cpu_suspend_exit()); And I know Mark has been prodding that with something sharp. The last version was tested by a number of people and I'm hoping to not have broken anything in the meantime ;-) Changes since v2: - rebased to v6.2-rc3; as available at: git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/idle - folded: https://lkml.kernel.org/r/Y3UBwYNY15ETUKy9@hirez.programming.kicks-ass.net which makes the ARM cpuidle index 0 consistently not use CPUIDLE_FLAG_RCU_IDLE, as requested by Ulf. - added a few more __always_inline to empty stub functions as found by the robot. - Used _RET_IP_ instead of _THIS_IP_ in a few placed because of: https://github.com/ClangBuiltLinux/linux/issues/263 - Added new patches to address various robot reports: #35: trace,hardirq: No moar _rcuidle() tracing #47: cpuidle: Ensure ct_cpuidle_enter() is always called from noinstr/__cpuidle #48: cpuidle,arch: Mark all ct_cpuidle_enter() callers __cpuidle #49: cpuidle,arch: Mark all regular cpuidle_state::enter methods __cpuidle #50: cpuidle: Comments about noinstr/__cpuidle #51: context_tracking: Fix noinstr vs KASAN Tested-by: Paul E. McKenney Tested-by: Sudeep Holla Reviewed-by: Mark Rutland Tested-by: Mark Rutland --- arch/alpha/kernel/process.c | 1 - arch/alpha/kernel/vmlinux.lds.S | 1 - arch/arc/kernel/process.c | 3 ++ arch/arc/kernel/vmlinux.lds.S | 1 - arch/arm/include/asm/vmlinux.lds.h | 1 - arch/arm/kernel/cpuidle.c | 4 +- arch/arm/kernel/process.c | 1 - arch/arm/kernel/smp.c | 6 +-- arch/arm/mach-davinci/cpuidle.c | 4 +- arch/arm/mach-gemini/board-dt.c | 3 +- arch/arm/mach-imx/cpuidle-imx5.c | 4 +- arch/arm/mach-imx/cpuidle-imx6q.c | 8 ++-- arch/arm/mach-imx/cpuidle-imx6sl.c | 4 +- arch/arm/mach-imx/cpuidle-imx6sx.c | 9 ++-- arch/arm/mach-imx/cpuidle-imx7ulp.c | 4 +- arch/arm/mach-omap2/common.h | 6 ++- arch/arm/mach-omap2/cpuidle34xx.c | 16 ++++++- arch/arm/mach-omap2/cpuidle44xx.c | 29 +++++++------ arch/arm/mach-omap2/omap-mpuss-lowpower.c | 12 +++++- arch/arm/mach-omap2/pm.h | 2 +- arch/arm/mach-omap2/pm24xx.c | 51 +--------------------- arch/arm/mach-omap2/pm34xx.c | 14 +++++-- arch/arm/mach-omap2/pm44xx.c | 2 +- arch/arm/mach-omap2/powerdomain.c | 10 ++--- arch/arm/mach-s3c/cpuidle-s3c64xx.c | 5 +-- arch/arm64/kernel/cpuidle.c | 2 +- arch/arm64/kernel/idle.c | 1 - arch/arm64/kernel/smp.c | 4 +- arch/arm64/kernel/vmlinux.lds.S | 1 - arch/csky/kernel/process.c | 1 - arch/csky/kernel/smp.c | 2 +- arch/csky/kernel/vmlinux.lds.S | 1 - arch/hexagon/kernel/process.c | 1 - arch/hexagon/kernel/vmlinux.lds.S | 1 - arch/ia64/kernel/process.c | 1 + arch/ia64/kernel/vmlinux.lds.S | 1 - arch/loongarch/kernel/idle.c | 1 + arch/loongarch/kernel/vmlinux.lds.S | 1 - arch/m68k/kernel/vmlinux-nommu.lds | 1 - arch/m68k/kernel/vmlinux-std.lds | 1 - arch/m68k/kernel/vmlinux-sun3.lds | 1 - arch/microblaze/kernel/process.c | 1 - arch/microblaze/kernel/vmlinux.lds.S | 1 - arch/mips/kernel/idle.c | 14 +++---- arch/mips/kernel/vmlinux.lds.S | 1 - arch/nios2/kernel/process.c | 1 - arch/nios2/kernel/vmlinux.lds.S | 1 - arch/openrisc/kernel/process.c | 1 + arch/openrisc/kernel/vmlinux.lds.S | 1 - arch/parisc/kernel/process.c | 2 - arch/parisc/kernel/vmlinux.lds.S | 1 - arch/powerpc/kernel/idle.c | 5 +-- arch/powerpc/kernel/vmlinux.lds.S | 1 - arch/riscv/kernel/process.c | 1 - arch/riscv/kernel/vmlinux-xip.lds.S | 1 - arch/riscv/kernel/vmlinux.lds.S | 1 - arch/s390/kernel/idle.c | 1 - arch/s390/kernel/vmlinux.lds.S | 1 - arch/sh/kernel/idle.c | 1 + arch/sh/kernel/vmlinux.lds.S | 1 - arch/sparc/kernel/leon_pmc.c | 4 ++ arch/sparc/kernel/process_32.c | 1 - arch/sparc/kernel/process_64.c | 3 +- arch/sparc/kernel/vmlinux.lds.S | 1 - arch/um/kernel/dyn.lds.S | 1 - arch/um/kernel/process.c | 1 - arch/um/kernel/uml.lds.S | 1 - arch/x86/boot/compressed/vmlinux.lds.S | 1 + arch/x86/coco/tdx/tdcall.S | 15 +------ arch/x86/coco/tdx/tdx.c | 25 ++++------- arch/x86/events/amd/brs.c | 13 +++--- arch/x86/include/asm/fpu/xcr.h | 4 +- arch/x86/include/asm/irqflags.h | 11 ++--- arch/x86/include/asm/mwait.h | 14 +++---- arch/x86/include/asm/nospec-branch.h | 2 +- arch/x86/include/asm/paravirt.h | 6 ++- arch/x86/include/asm/perf_event.h | 2 +- arch/x86/include/asm/shared/io.h | 4 +- arch/x86/include/asm/shared/tdx.h | 1 - arch/x86/include/asm/special_insns.h | 8 ++-- arch/x86/include/asm/xen/hypercall.h | 2 +- arch/x86/kernel/cpu/bugs.c | 2 +- arch/x86/kernel/fpu/core.c | 4 +- arch/x86/kernel/paravirt.c | 14 ++++++- arch/x86/kernel/process.c | 65 ++++++++++++++-------------- arch/x86/kernel/vmlinux.lds.S | 1 - arch/x86/lib/memcpy_64.S | 5 +-- arch/x86/lib/memmove_64.S | 4 +- arch/x86/lib/memset_64.S | 4 +- arch/x86/xen/enlighten_pv.c | 2 +- arch/x86/xen/irq.c | 2 +- arch/xtensa/kernel/process.c | 1 + arch/xtensa/kernel/vmlinux.lds.S | 1 - drivers/acpi/processor_idle.c | 28 ++++++++----- drivers/base/power/runtime.c | 24 +++++------ drivers/clk/clk.c | 8 ++-- drivers/cpuidle/cpuidle-arm.c | 4 +- drivers/cpuidle/cpuidle-big_little.c | 12 ++++-- drivers/cpuidle/cpuidle-mvebu-v7.c | 13 ++++-- drivers/cpuidle/cpuidle-psci.c | 26 +++++------- drivers/cpuidle/cpuidle-qcom-spm.c | 4 +- drivers/cpuidle/cpuidle-riscv-sbi.c | 19 +++++---- drivers/cpuidle/cpuidle-tegra.c | 31 +++++++++----- drivers/cpuidle/cpuidle.c | 70 ++++++++++++++++++++++--------- drivers/cpuidle/dt_idle_states.c | 2 +- drivers/cpuidle/poll_state.c | 10 ++++- drivers/idle/intel_idle.c | 19 ++++----- drivers/perf/arm_pmu.c | 11 +---- drivers/perf/riscv_pmu_sbi.c | 8 +--- include/asm-generic/vmlinux.lds.h | 9 ++-- include/linux/clockchips.h | 4 +- include/linux/compiler_types.h | 18 +++++++- include/linux/cpu.h | 3 -- include/linux/cpuidle.h | 32 ++++++++++++++ include/linux/cpumask.h | 4 +- include/linux/percpu-defs.h | 2 +- include/linux/sched/idle.h | 40 +++++++++++++----- include/linux/thread_info.h | 18 +++++++- include/linux/tracepoint.h | 15 ++++++- kernel/context_tracking.c | 12 +++--- kernel/cpu_pm.c | 9 ---- kernel/printk/printk.c | 2 +- kernel/sched/idle.c | 47 ++++++--------------- kernel/time/tick-broadcast-hrtimer.c | 29 ++++++------- kernel/time/tick-broadcast.c | 6 ++- kernel/trace/trace.c | 3 ++ kernel/trace/trace_preemptirq.c | 50 ++++++---------------- lib/ubsan.c | 5 ++- mm/kasan/kasan.h | 4 ++ mm/kasan/shadow.c | 38 +++++++++++++++++ tools/objtool/check.c | 17 ++++++++ 131 files changed, 617 insertions(+), 523 deletions(-)