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Received: from dhcp-077-249-017-003.chello.nl ([77.249.17.3] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1nywww-00ChVo-B5; Wed, 08 Jun 2022 14:46:22 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 58CC930008D; 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 Subject: [PATCH 00/36] cpuidle,rcu: Cleanup the mess X-Mailman-Approved-At: Thu, 09 Jun 2022 09:55:19 +1000 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juri.lelli@redhat.com, rafael@kernel.org, linus.walleij@linaro.org, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, srivatsa@csail.mit.edu, linux-arch@vger.kernel.org, vincent.guittot@linaro.org, chenhuacai@kernel.org, linux-acpi@vger.kernel.org, agross@kernel.org, geert@linux-m68k.org, linux-imx@nxp.com, catalin.marinas@arm.com, xen-devel@lists.xenproject.org, mattst88@gmail.com, borntraeger@linux.ibm.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, jiangshanlai@gmail.com, Sascha Hauer , linux-um@lists.infradead.org, acme@kernel.org, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, rth@twiddle.net, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, senozhatsky@chromium.org, svens@linux.ibm.com, jolsa@kernel.org, paulus@samba.org, mark.rutland@arm.com, linux-ia64@vger.kernel.org, dave.hansen@linux.intel.com, virtualizatio n@lists.linux-foundation.org, James.Bottomley@HansenPartnership.com, jcmvbkbc@gmail.com, thierry.reding@gmail.com, kernel@xen0n.name, quic_neeraju@quicinc.com, linux-s390@vger.kernel.org, vschneid@redhat.com, john.ogness@linutronix.de, ysato@users.sourceforge.jp, linux-sh@vger.kernel.org, festevam@gmail.com, deller@gmx.de, daniel.lezcano@linaro.org, jonathanh@nvidia.com, mathieu.desnoyers@efficios.com, frederic@kernel.org, lenb@kernel.org, linux-xtensa@linux-xtensa.org, kernel@pengutronix.de, gor@linux.ibm.com, linux-arm-msm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-m68k@lists.linux-m68k.org, shorne@gmail.com, linux-arm-kernel@lists.infradead.org, chris@zankel.net, sboyd@kernel.org, dinguyen@kernel.org, bristot@redhat.com, alexander.shishkin@linux.intel.com, lpieralisi@kernel.org, linux@rasmusvillemoes.dk, joel@joelfernandes.org, will@kernel.org, boris.ostrovsky@oracle.com, khilman@kernel.org, linux-csky@vger.kernel.org, pv-drivers@vmware.com, linux-snps-arc@lists.infradea d.org, mgorman@suse.de, jacob.jun.pan@linux.intel.com , Arnd Bergmann , ulli.kroll@googlemail.com, vgupta@kernel.org, linux-clk@vger.kernel.org, josh@joshtriplett.org, rostedt@goodmis.org, rcu@vger.kernel.org, bp@alien8.de, bcain@quicinc.com, tsbogend@alpha.franken.de, linux-parisc@vger.kernel.org, sudeep.holla@arm.com, shawnguo@kernel.org, davem@davemloft.net, dalias@libc.org, tony@atomide.com, amakhalov@vmware.com, bjorn.andersson@linaro.org, hpa@zytor.com, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, anton.ivanov@cambridgegreys.com, jonas@southpole.se, yury.norov@gmail.com, richard@nod.at, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, aou@eecs.berkeley.edu, paulmck@kernel.org, hca@linux.ibm.com, stefan.kristiansson@saunalahti.fi, openrisc@lists.librecores.org, paul.walmsley@sifive.com, linux-tegra@vger.kernel.org, namhyung@kernel.org, andriy.shevchenko@linux.intel.com, jpoimboe@kernel.org, jgross@suse.com, monstr@monstr.eu, linux-mips@vger.kernel.org, palmer@dab belt.com, anup@brainfault.org, ink@jurassic.park.msu.ru, johannes@sipsolutions.net, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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(-)