[PATCH v2 00/44] cpuidle,rcu: Clean up the mess
Peter Zijlstra
peterz at infradead.org
Mon Sep 19 02:59:39 PDT 2022
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.
---
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(-)
More information about the linux-riscv
mailing list