From patchwork Wed Jun 8 14:27:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 12873707 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 8F384CCA48C for ; Wed, 8 Jun 2022 14:49:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242134AbiFHOtU (ORCPT ); Wed, 8 Jun 2022 10:49:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242211AbiFHOrB (ORCPT ); Wed, 8 Jun 2022 10:47:01 -0400 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 0E76425224E; Wed, 8 Jun 2022 07:46:50 -0700 (PDT) DKIM-Signature: v=1; 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Wed, 8 Jun 2022 16:46:18 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 3237720C0F991; Wed, 8 Jun 2022 16:46:18 +0200 (CEST) Message-ID: <20220608142723.103523089@infradead.org> User-Agent: quilt/0.66 Date: Wed, 08 Jun 2022 16:27:23 +0200 From: Peter Zijlstra To: peterz@infradead.org Cc: rth@twiddle.net, 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, benh@kernel.crashing.org, paulus@samba.org, 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, anup@brainfault.org, thierry.reding@gmail.com, jonathanh@nvidia.com, jacob.jun.pan@linux.intel.com, Arnd Bergmann , yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, rostedt@goodmis.org, pmladek@suse.com, senozhatsky@chromium.org, john.ogness@linutronix.de, paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, joel@joelfernandes.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, jpoimboe@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, 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, xen-devel@lists.xenproject.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, rcu@vger.kernel.org Subject: [PATCH 00/36] cpuidle,rcu: Cleanup the mess Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Hi All! (omg so many) These here few patches mostly clear out the utter mess that is cpuidle vs rcuidle. At the end of the ride there's only 2 real RCU_NONIDLE() users left arch/arm64/kernel/suspend.c: RCU_NONIDLE(__cpu_suspend_exit()); drivers/perf/arm_pmu.c: RCU_NONIDLE(armpmu_start(event, PERF_EF_RELOAD)); kernel/cfi.c: RCU_NONIDLE({ (the CFI one is likely dead in the kCFI rewrite) and there's only a hand full of trace_.*_rcuidle() left: kernel/trace/trace_preemptirq.c: trace_irq_enable_rcuidle(CALLER_ADDR0, CALLER_ADDR1); kernel/trace/trace_preemptirq.c: trace_irq_disable_rcuidle(CALLER_ADDR0, CALLER_ADDR1); kernel/trace/trace_preemptirq.c: trace_irq_enable_rcuidle(CALLER_ADDR0, caller_addr); kernel/trace/trace_preemptirq.c: trace_irq_disable_rcuidle(CALLER_ADDR0, caller_addr); kernel/trace/trace_preemptirq.c: trace_preempt_enable_rcuidle(a0, a1); kernel/trace/trace_preemptirq.c: trace_preempt_disable_rcuidle(a0, a1); All of them are in 'deprecated' code that is unused for GENERIC_ENTRY. I've touched a _lot_ of code that I can't test and likely broken some of it :/ In particular, the whole ARM cpuidle stuff was quite involved with OMAP being the absolute 'winner'. I'm hoping Mark can help me sort the remaining ARM64 bits as he moves that to GENERIC_ENTRY. I've also got a note that says ARM64 can probably do a WFE based idle state and employ TIF_POLLING_NRFLAG to avoid some IPIs. --- 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/process.c | 1 arch/arm/kernel/smp.c | 6 +-- arch/arm/mach-gemini/board-dt.c | 3 + arch/arm/mach-imx/cpuidle-imx6q.c | 4 +- arch/arm/mach-imx/cpuidle-imx6sx.c | 5 ++ arch/arm/mach-omap2/cpuidle34xx.c | 16 ++++++++ arch/arm/mach-omap2/cpuidle44xx.c | 29 +++++++++------ arch/arm/mach-omap2/pm.h | 2 - arch/arm/mach-omap2/pm34xx.c | 14 +++++-- arch/arm/mach-omap2/powerdomain.c | 10 ++--- 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/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 | 8 +--- 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/coco/tdx/tdcall.S | 15 +------- arch/x86/coco/tdx/tdx.c | 25 +++---------- arch/x86/events/amd/brs.c | 13 ++----- 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 | 6 +-- arch/x86/include/asm/xen/hypercall.h | 2 - arch/x86/kernel/paravirt.c | 14 ++++++- arch/x86/kernel/process.c | 65 +++++++++++++++++------------------ arch/x86/kernel/vmlinux.lds.S | 1 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 | 46 ++++++++++++++---------- drivers/base/power/runtime.c | 24 ++++++------ drivers/clk/clk.c | 8 ++-- drivers/cpuidle/cpuidle-arm.c | 1 drivers/cpuidle/cpuidle-big_little.c | 8 +++- drivers/cpuidle/cpuidle-mvebu-v7.c | 7 +++ drivers/cpuidle/cpuidle-psci.c | 10 +++-- drivers/cpuidle/cpuidle-qcom-spm.c | 1 drivers/cpuidle/cpuidle-riscv-sbi.c | 10 +++-- drivers/cpuidle/cpuidle-tegra.c | 21 ++++++++--- drivers/cpuidle/cpuidle.c | 21 +++++------ drivers/cpuidle/dt_idle_states.c | 2 - drivers/cpuidle/poll_state.c | 10 ++++- drivers/idle/intel_idle.c | 29 ++++++++++++--- include/asm-generic/vmlinux.lds.h | 9 +--- include/linux/compiler_types.h | 8 +++- include/linux/cpu.h | 3 - include/linux/cpuidle.h | 33 +++++++++++++++++ include/linux/cpumask.h | 4 +- include/linux/sched/idle.h | 40 ++++++++++++++++----- include/linux/thread_info.h | 18 +++++++++ include/linux/tracepoint.h | 13 ++++++- kernel/cpu_pm.c | 9 ---- kernel/printk/printk.c | 2 - kernel/rcu/tree.c | 9 +--- kernel/sched/idle.c | 47 +++++++------------------ kernel/time/tick-broadcast-hrtimer.c | 29 ++++++--------- kernel/time/tick-broadcast.c | 6 ++- kernel/trace/trace.c | 3 + tools/objtool/check.c | 15 +++++++- 104 files changed, 449 insertions(+), 342 deletions(-)