From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
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Subject: Re: [PATCH v2 00/44] cpuidle,rcu: Clean up the mess
Date: Mon, 19 Sep 2022 17:21:12 +0200 [thread overview]
Message-ID: <CAJZ5v0h3y-MRzHmbzrr6B4vBxkkw07LOdCVmBqSS4JDhtGSKXg@mail.gmail.com> (raw)
In-Reply-To: <20220919095939.761690562@infradead.org>
On Mon, Sep 19, 2022 at 12:17 PM Peter Zijlstra <peterz@infradead.org> wrote:
>
> Hi All!
>
> At long last, a respin of the cpuidle vs rcu cleanup patches.
>
> v1: https://lkml.kernel.org/r/20220608142723.103523089@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 'one' trace_*_rcuidle() user:
>
> 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);
>
> However this last is all in deprecated code that should be unused for GENERIC_ENTRY.
>
> I've touched a lot of code that I can't test and I might've broken something by
> accident. In particular the whole ARM cpuidle stuff was quite involved.
>
> Please all; have a look where you haven't already.
>
>
> New since v1:
>
> - rebase on top of Frederic's rcu-context-tracking rename fest
> - more omap goodness as per the last discusion (thanks Tony!)
> - removed one more RCU_NONIDLE() from arm64/risc-v perf code
> - ubsan/kasan fixes
> - intel_idle module-param for testing
> - a bunch of extra __always_inline, because compilers are silly.
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
for the whole set and let me know if you want me to merge any of these
through cpuidle.
Thanks!
>
> ---
> 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/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/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 | 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/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 | 36 ++++++++++-------
> 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 | 19 +++++----
> drivers/perf/arm_pmu.c | 11 +-----
> drivers/perf/riscv_pmu_sbi.c | 8 +---
> include/asm-generic/vmlinux.lds.h | 9 ++---
> include/linux/compiler_types.h | 8 +++-
> include/linux/cpu.h | 3 --
> include/linux/cpuidle.h | 34 ++++++++++++++++
> 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 | 13 ++++++-
> 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 ++
> lib/ubsan.c | 5 ++-
> mm/kasan/kasan.h | 4 ++
> mm/kasan/shadow.c | 38 ++++++++++++++++++
> tools/objtool/check.c | 17 ++++++++
> 121 files changed, 511 insertions(+), 420 deletions(-)
>
next prev parent reply other threads:[~2022-09-19 15:22 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-19 9:59 [PATCH v2 00/44] cpuidle,rcu: Clean up the mess Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 01/44] x86/perf/amd: Remove tracing from perf_lopwr_cb() Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 02/44] x86/idle: Replace x86_idle with a static_call Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 03/44] cpuidle/poll: Ensure IRQ state is invariant Peter Zijlstra
2022-09-19 13:19 ` Frederic Weisbecker
2022-09-20 8:57 ` Peter Zijlstra
2022-09-20 10:43 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 04/44] cpuidle: Move IRQ state validation Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 05/44] cpuidle,riscv: Push RCU-idle into driver Peter Zijlstra
2022-09-19 11:54 ` Anup Patel
2022-09-19 13:46 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 06/44] cpuidle,tegra: " Peter Zijlstra
2022-09-19 14:05 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 07/44] cpuidle,psci: " Peter Zijlstra
2022-09-19 14:11 ` Frederic Weisbecker
2022-09-21 21:51 ` Kajetan Puchalski
2022-09-22 0:45 ` Guo Ren
2022-09-19 9:59 ` [PATCH v2 08/44] cpuidle,imx6: " Peter Zijlstra
2022-09-19 14:21 ` Frederic Weisbecker
2022-09-19 15:00 ` Peter Zijlstra
2022-09-20 8:58 ` Peter Zijlstra
2022-09-20 9:01 ` Frederic Weisbecker
2022-09-19 14:49 ` Frederic Weisbecker
2022-09-19 15:01 ` Peter Zijlstra
2022-09-19 15:03 ` Peter Zijlstra
2022-09-19 15:17 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 09/44] cpuidle,omap3: " Peter Zijlstra
2022-09-19 14:31 ` Frederic Weisbecker
2022-09-19 15:19 ` Peter Zijlstra
2022-09-20 8:39 ` Frederic Weisbecker
2022-09-19 14:43 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 10/44] cpuidle,armada: " Peter Zijlstra
2022-09-19 14:39 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 11/44] cpuidle,omap4: " Peter Zijlstra
2022-09-20 10:53 ` Frederic Weisbecker
2022-09-19 9:59 ` [PATCH v2 12/44] cpuidle,dt: " Peter Zijlstra
2022-10-04 11:03 ` Ulf Hansson
2022-10-04 11:43 ` Ulf Hansson
2022-11-16 15:29 ` Peter Zijlstra
2022-11-22 16:04 ` Ulf Hansson
2022-09-19 9:59 ` [PATCH v2 13/44] cpuidle: Fix ct_idle_*() usage Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 14/44] cpuidle,cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}() Peter Zijlstra
2022-10-04 11:04 ` Ulf Hansson
2022-09-19 9:59 ` [PATCH v2 15/44] acpi_idle: Remove tracing Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 16/44] cpuidle: Annotate poll_idle() Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 17/44] objtool/idle: Validate __cpuidle code as noinstr Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 18/44] cpuidle,intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again* Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 19/44] cpuidle,intel_idle: Fix CPUIDLE_FLAG_INIT_XSTATE Peter Zijlstra
2022-09-19 9:59 ` [PATCH v2 20/44] cpuidle,intel_idle: Fix CPUIDLE_FLAG_IBRS Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 21/44] arch/idle: Change arch_cpu_idle() IRQ behaviour Peter Zijlstra
2022-09-20 5:08 ` Guo Ren
2022-09-19 10:00 ` [PATCH v2 22/44] x86/tdx: Remove TDX_HCALL_ISSUE_STI Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 23/44] arm,smp: Remove trace_.*_rcuidle() usage Peter Zijlstra
2022-10-04 11:08 ` Ulf Hansson
2022-09-19 10:00 ` [PATCH v2 24/44] arm64,smp: " Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 25/44] printk: " Peter Zijlstra
2022-09-20 2:49 ` Sergey Senozhatsky
2022-09-19 10:00 ` [PATCH v2 26/44] time/tick-broadcast: Remove RCU_NONIDLE usage Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 27/44] cpuidle,sched: Remove annotations from TIF_{POLLING_NRFLAG,NEED_RESCHED} Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 28/44] cpuidle,mwait: Make noinstr clean Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 29/44] cpuidle,tdx: Make tdx " Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 30/44] cpuidle,xenpv: Make more PARAVIRT_XXL " Peter Zijlstra
2022-09-19 10:45 ` Juergen Gross
2022-09-19 10:00 ` [PATCH v2 31/44] cpuidle,nospec: Make " Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 32/44] cpuidle,acpi: " Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 33/44] ftrace: WARN on rcuidle Peter Zijlstra
2022-09-26 18:41 ` Steven Rostedt
2022-10-04 17:19 ` Mark Rutland
2022-09-19 10:00 ` [PATCH v2 34/44] cpuidle,omap3: Use WFI for omap3_pm_idle() Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 35/44] cpuidle,omap3: Push RCU-idle into omap_sram_idle() Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 36/44] cpuidle,omap4: Push RCU-idle into omap4_enter_lowpower() Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 37/44] arm,omap2: Use WFI for omap2_pm_idle() Peter Zijlstra
2022-09-27 6:21 ` Tony Lindgren
2022-09-19 10:00 ` [PATCH v2 38/44] cpuidle,powerdomain: Remove trace_.*_rcuidle() Peter Zijlstra
2022-10-04 11:12 ` Ulf Hansson
2022-09-19 10:00 ` [PATCH v2 39/44] cpuidle,clk: " Peter Zijlstra
2022-10-04 11:09 ` Ulf Hansson
2022-09-19 10:00 ` [PATCH v2 40/44] ubsan: Fix objtool UACCESS warns Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 41/44] intel_idle: Add force_irq_on module param Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 42/44] entry,kasan,x86: Disallow overriding mem*() functions Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 43/44] sched: Always inline __this_cpu_preempt_check() Peter Zijlstra
2022-09-19 10:00 ` [PATCH v2 44/44] arm64,riscv,perf: Remove RCU_NONIDLE() usage Peter Zijlstra
2022-09-19 15:21 ` Rafael J. Wysocki [this message]
2022-09-20 12:31 ` [PATCH v2 00/44] cpuidle,rcu: Clean up the mess Frederic Weisbecker
2022-09-20 14:04 ` Peter Zijlstra
2022-09-27 6:31 ` Tony Lindgren
2022-10-04 15:15 ` Ulf Hansson
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