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Date: Mon, 20 Feb 2023 13:55:17 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>,
Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
Daniel Bristot de Oliveira <bristot@...hat.com>,
Valentin Schneider <vschneid@...hat.com>
Subject: [GIT PULL] scheduler changes for v6.3
Linus,
Please pull the latest sched/core git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-core-2023-02-20
# HEAD: 7c4a5b89a0b5a57a64b601775b296abf77a9fe97 sched/rt: pick_next_rt_entity(): check list_entry
Scheduler updates in this cycle are:
- Improve the scalability of the CFS bandwidth unthrottling logic
with large number of CPUs.
- Fix & rework various cpuidle routines, simplify interaction with
the generic scheduler code. Add __cpuidle methods as noinstr to
objtool's noinstr detection and fix boatloads of cpuidle bugs & quirks.
- Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS,
to query previously issued registrations.
- Limit scheduler slice duration to the sysctl_sched_latency period,
to improve scheduling granularity with a large number of SCHED_IDLE
tasks.
- Debuggability enhancement on sys_exit(): warn about disabled IRQs,
but also enable them to prevent a cascade of followup problems and
repeat warnings.
- Fix the rescheduling logic in prio_changed_dl().
- Micro-optimize cpufreq and sched-util methods.
- Micro-optimize ttwu_runnable()
- Micro-optimize the idle-scanning in update_numa_stats(),
select_idle_capacity() and steal_cookie_task().
- Update the RSEQ code & self-tests
- Constify various scheduler methods
- Remove unused methods
- Refine __init tags
- Documentation updates
- ... Misc other cleanups, fixes
Thanks,
Ingo
------------------>
Arnd Bergmann (1):
cpuidle: mvebu: Fix duplicate flags assignment
Bing Huang (2):
sched/topology: Add __init for init_defrootdomain
sched/topology: Add __init for sched_init_domains()
Chengming Zhou (2):
sched/core: Micro-optimize ttwu_runnable()
sched/core: Reorganize ttwu_do_wakeup() and ttwu_do_activate()
Hao Jia (2):
sched/numa: Stop an exhastive search if an idle core is found
sched/core: Adjusting the order of scanning CPU
Ingo Molnar (1):
sched/cputime: Fix IA64 build error of missing arch_vtime_task_switch() prototype
Josh Don (1):
sched: Async unthrottling for cfs bandwidth
Lukasz Luba (1):
cpufreq, sched/util: Optimize operations with single CPU capacity lookup
Mark Brown (1):
KVM: selftests: Fix build of rseq test
Mark Rutland (1):
cpuidle: drivers: firmware: psci: Dont instrument suspend code
Mathieu Desnoyers (25):
selftests/rseq: Fix: Fail thread registration when CONFIG_RSEQ=n
rseq: Introduce feature size and alignment ELF auxiliary vector entries
rseq: Introduce extensible rseq ABI
rseq: Extend struct rseq with numa node id
selftests/rseq: Use ELF auxiliary vector for extensible rseq
selftests/rseq: Implement rseq numa node id field selftest
sched: Introduce per-memory-map concurrency ID
rseq: Extend struct rseq with per-memory-map concurrency ID
selftests/rseq: Remove RSEQ_SKIP_FASTPATH code
selftests/rseq: Implement rseq mm_cid field support
selftests/rseq: x86: Template memory ordering and percpu access mode
selftests/rseq: arm: Template memory ordering and percpu access mode
selftests/rseq: arm64: Template memory ordering and percpu access mode
selftests/rseq: mips: Template memory ordering and percpu access mode
selftests/rseq: ppc: Template memory ordering and percpu access mode
selftests/rseq: s390: Template memory ordering and percpu access mode
selftests/rseq: riscv: Template memory ordering and percpu access mode
selftests/rseq: Implement basic percpu ops mm_cid test
selftests/rseq: Implement parametrized mm_cid test
selftests/rseq: parametrized test: Report/abort on negative concurrency ID
tracing/rseq: Add mm_cid field to rseq_update
selftests/rseq: Add mm_numa_cid to test script
sched/rseq: Fix concurrency ID handling of usermodehelper kthreads
selftests/rseq: Revert "selftests/rseq: Add mm_numa_cid to test script"
rseq: Increase AT_VECTOR_SIZE_BASE to match rseq auxvec entries
Matthew Wilcox (Oracle) (1):
sched: Make const-safe
Michal Clapinski (2):
sched/membarrier: Introduce MEMBARRIER_CMD_GET_REGISTRATIONS
selftests/membarrier: Test MEMBARRIER_CMD_GET_REGISTRATIONS
Nicholas Piggin (2):
cputime: remove cputime_to_nsecs fallback
exit: Detect and fix irq disabled state in oops
Peter Zijlstra (59):
x86/perf/amd: Remove tracing from perf_lopwr_cb()
x86/idle: Replace 'x86_idle' function pointer with a static_call
cpuidle/poll: Ensure IRQs stay disabled after cpuidle_state::enter() calls
cpuidle: Move IRQ state validation
cpuidle, riscv: Push RCU-idle into driver
cpuidle, tegra: Push RCU-idle into driver
cpuidle, psci: Push RCU-idle into driver
cpuidle, ARM/imx6: Push RCU-idle into driver
cpuidle, OMAP3: Push RCU-idle into driver
cpuidle, armada: Push RCU-idle into driver
cpuidle, OMAP4: Push RCU-idle into driver
cpuidle, dt: Push RCU-idle into driver
cpuidle: Fix ct_idle_*() usage
cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()
acpi_idle: Remove tracing
cpuidle: Annotate poll_idle()
objtool/idle: Validate __cpuidle code as noinstr
cpuidle, intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again*
cpuidle, intel_idle: Fix CPUIDLE_FLAG_INIT_XSTATE
cpuidle, intel_idle: Fix CPUIDLE_FLAG_IBRS
arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled
x86/tdx: Remove TDX_HCALL_ISSUE_STI
arm, smp: Remove trace_.*_rcuidle() usage
arm64, smp: Remove trace_.*_rcuidle() usage
printk: Remove trace_.*_rcuidle() usage
time/tick-broadcast: Remove RCU_NONIDLE() usage
cpuidle, sched: Remove instrumentation from TIF_{POLLING_NRFLAG,NEED_RESCHED}
cpuidle, mwait: Make the mwait code noinstr clean
cpuidle, tdx: Make TDX code noinstr clean
cpuidle, xenpv: Make more PARAVIRT_XXL noinstr clean
cpuidle, nospec: Make mds_idle_clear_cpu_buffers() noinstr clean
cpuidle, ACPI: Make noinstr clean
tracing: Remove trace_hardirqs_{on,off}_caller()
tracing: WARN on rcuidle
tracing, hardirq: No moar _rcuidle() tracing
cpuidle, OMAP3: Use WFI for omap3_pm_idle()
cpuidle, OMAP3: Push RCU-idle into omap_sram_idle()
arm, OMAP2: Use WFI for omap2_pm_idle()
cpuidle, ARM: OMAP2+: powerdomain: Remove trace_.*_rcuidle()
cpuidle, clk: Remove trace_.*_rcuidle()
ubsan: Fix objtool UACCESS warns
intel_idle: Add force_irq_on module param
entry, kasan, x86: Disallow overriding mem*() functions
sched/core: Always inline __this_cpu_preempt_check()
arm64, riscv, perf: Remove RCU_NONIDLE() usage
cpuidle: Ensure ct_cpuidle_enter() is always called from noinstr/__cpuidle
cpuidle, arch: Mark all ct_cpuidle_enter() callers __cpuidle
cpuidle,arch: Mark all regular cpuidle_state:: Enter methods __cpuidle
cpuidle: Add comments about noinstr/__cpuidle usage
context_tracking: Fix noinstr vs KASAN
cpuidle, arm64: Fix the ARM64 cpuidle logic
cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG
cpuidle: tracing: Warn about !rcu_is_watching()
cpuidle: tracing, preempt: Squash _rcuidle tracing
x86/atomics: Always inline arch_atomic64*()
sched/clock/x86: Mark sched_clock() noinstr
sched/clock: Make local_clock() noinstr
cpuidle: Fix poll_idle() noinstr annotation
objtool: mem*() are not uaccess safe
Pietro Borrello (1):
sched/rt: pick_next_rt_entity(): check list_entry
Qais Yousef (1):
sched/documentation: Document the util clamp feature
Tony Lindgren (1):
cpuidle, OMAP4: Push RCU-idle into omap4_enter_lowpower()
Uros Bizjak (1):
x86/pvclock: Improve atomic update of last_value in pvclock_clocksource_read()
Valentin Schneider (1):
sched/deadline: Add more reschedule cases to prio_changed_dl()
Vincent Guittot (3):
sched/fair: Limit sched slice duration
sched/fair: unlink misfit task from cpu overutilized
sched/fair: Remove capacity inversion detection
Zhang Qiao (1):
sched/fair: sanitize vruntime of entity being placed
Documentation/admin-guide/cgroup-v2.rst | 3 +
Documentation/scheduler/index.rst | 1 +
Documentation/scheduler/sched-util-clamp.rst | 741 ++++++++++++
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 | 6 +-
arch/arm64/kernel/idle.c | 1 -
arch/arm64/kernel/smp.c | 4 +-
arch/arm64/kernel/suspend.c | 12 +-
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/time.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 | 3 +-
arch/s390/kernel/vmlinux.lds.S | 1 -
arch/s390/kernel/vtime.c | 2 +-
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/atomic64_32.h | 44 +-
arch/x86/include/asm/atomic64_64.h | 36 +-
arch/x86/include/asm/fpu/xcr.h | 4 +-
arch/x86/include/asm/irqflags.h | 11 +-
arch/x86/include/asm/kvmclock.h | 2 +-
arch/x86/include/asm/mwait.h | 14 +-
arch/x86/include/asm/nospec-branch.h | 2 +-
arch/x86/include/asm/paravirt.h | 8 +-
arch/x86/include/asm/perf_event.h | 2 +-
arch/x86/include/asm/pvclock.h | 3 +-
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/cpu/vmware.c | 2 +-
arch/x86/kernel/fpu/core.c | 4 +-
arch/x86/kernel/kvmclock.c | 6 +-
arch/x86/kernel/paravirt.c | 14 +-
arch/x86/kernel/process.c | 65 +-
arch/x86/kernel/pvclock.c | 22 +-
arch/x86/kernel/tsc.c | 7 +-
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/x86/xen/time.c | 12 +-
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 | 15 +-
drivers/cpuidle/cpuidle-psci.c | 22 +-
drivers/cpuidle/cpuidle-qcom-spm.c | 4 +-
drivers/cpuidle/cpuidle-riscv-sbi.c | 19 +-
drivers/cpuidle/cpuidle-tegra.c | 31 +-
drivers/cpuidle/cpuidle.c | 72 +-
drivers/cpuidle/dt_idle_states.c | 2 +-
drivers/cpuidle/poll_state.c | 8 +-
drivers/firmware/psci/psci.c | 42 +-
drivers/idle/intel_idle.c | 19 +-
drivers/perf/arm_pmu.c | 11 +-
drivers/perf/riscv_pmu_sbi.c | 8 +-
fs/binfmt_elf.c | 5 +
fs/exec.c | 4 +
include/asm-generic/vmlinux.lds.h | 9 +-
include/linux/auxvec.h | 2 +-
include/linux/clockchips.h | 4 +-
include/linux/compiler_types.h | 18 +-
include/linux/context_tracking.h | 27 +
include/linux/cpu.h | 3 -
include/linux/cpuidle.h | 50 +-
include/linux/cpumask.h | 4 +-
include/linux/math64.h | 4 +-
include/linux/mm.h | 25 +
include/linux/mm_types.h | 43 +-
include/linux/percpu-defs.h | 2 +-
include/linux/sched.h | 9 +
include/linux/sched/clock.h | 8 +-
include/linux/sched/cputime.h | 9 -
include/linux/sched/idle.h | 40 +-
include/linux/thread_info.h | 18 +-
include/linux/trace_recursion.h | 18 +
include/linux/tracepoint.h | 15 +-
include/trace/events/rseq.h | 7 +-
include/uapi/linux/auxvec.h | 2 +
include/uapi/linux/membarrier.h | 4 +
include/uapi/linux/rseq.h | 22 +
init/Kconfig | 4 +
kernel/context_tracking.c | 12 +-
kernel/cpu_pm.c | 9 -
kernel/exit.c | 7 +
kernel/fork.c | 8 +-
kernel/locking/lockdep.c | 3 +
kernel/panic.c | 5 +
kernel/printk/printk.c | 2 +-
kernel/ptrace.c | 2 +-
kernel/rseq.c | 65 +-
kernel/sched/clock.c | 27 +-
kernel/sched/core.c | 134 ++-
kernel/sched/cpufreq_schedutil.c | 43 +-
kernel/sched/cputime.c | 4 +
kernel/sched/deadline.c | 42 +-
kernel/sched/fair.c | 389 ++++---
kernel/sched/idle.c | 47 +-
kernel/sched/membarrier.c | 39 +-
kernel/sched/rt.c | 5 +-
kernel/sched/sched.h | 107 +-
kernel/sched/topology.c | 4 +-
kernel/signal.c | 2 +
kernel/time/tick-broadcast-hrtimer.c | 29 +-
kernel/time/tick-broadcast.c | 6 +-
kernel/trace/trace.c | 3 +
kernel/trace/trace_preemptirq.c | 61 +-
lib/bug.c | 15 +-
lib/ubsan.c | 5 +-
mm/kasan/kasan.h | 4 +
mm/kasan/shadow.c | 38 +
tools/objtool/check.c | 14 +
tools/testing/selftests/kvm/rseq_test.c | 16 +-
.../selftests/membarrier/membarrier_test_impl.h | 33 +
.../membarrier/membarrier_test_multi_thread.c | 2 +-
.../membarrier/membarrier_test_single_thread.c | 6 +-
tools/testing/selftests/rseq/.gitignore | 4 +
tools/testing/selftests/rseq/Makefile | 20 +-
.../testing/selftests/rseq/basic_percpu_ops_test.c | 46 +-
tools/testing/selftests/rseq/basic_test.c | 4 +
tools/testing/selftests/rseq/compiler.h | 6 +
tools/testing/selftests/rseq/param_test.c | 157 ++-
tools/testing/selftests/rseq/rseq-abi.h | 22 +
tools/testing/selftests/rseq/rseq-arm-bits.h | 505 +++++++++
tools/testing/selftests/rseq/rseq-arm.h | 701 +-----------
tools/testing/selftests/rseq/rseq-arm64-bits.h | 392 +++++++
tools/testing/selftests/rseq/rseq-arm64.h | 520 +--------
tools/testing/selftests/rseq/rseq-bits-reset.h | 11 +
tools/testing/selftests/rseq/rseq-bits-template.h | 41 +
tools/testing/selftests/rseq/rseq-mips-bits.h | 462 ++++++++
tools/testing/selftests/rseq/rseq-mips.h | 646 +----------
tools/testing/selftests/rseq/rseq-ppc-bits.h | 454 ++++++++
tools/testing/selftests/rseq/rseq-ppc.h | 617 +---------
tools/testing/selftests/rseq/rseq-riscv-bits.h | 410 +++++++
tools/testing/selftests/rseq/rseq-riscv.h | 529 +--------
tools/testing/selftests/rseq/rseq-s390-bits.h | 474 ++++++++
tools/testing/selftests/rseq/rseq-s390.h | 495 +-------
tools/testing/selftests/rseq/rseq-skip.h | 65 --
tools/testing/selftests/rseq/rseq-x86-bits.h | 993 ++++++++++++++++
tools/testing/selftests/rseq/rseq-x86.h | 1193 +-------------------
tools/testing/selftests/rseq/rseq.c | 91 +-
tools/testing/selftests/rseq/rseq.h | 215 +++-
tools/testing/selftests/rseq/run_param_test.sh | 5 +
212 files changed, 6784 insertions(+), 5553 deletions(-)
create mode 100644 Documentation/scheduler/sched-util-clamp.rst
create mode 100644 tools/testing/selftests/rseq/rseq-arm-bits.h
create mode 100644 tools/testing/selftests/rseq/rseq-arm64-bits.h
create mode 100644 tools/testing/selftests/rseq/rseq-bits-reset.h
create mode 100644 tools/testing/selftests/rseq/rseq-bits-template.h
create mode 100644 tools/testing/selftests/rseq/rseq-mips-bits.h
create mode 100644 tools/testing/selftests/rseq/rseq-ppc-bits.h
create mode 100644 tools/testing/selftests/rseq/rseq-riscv-bits.h
create mode 100644 tools/testing/selftests/rseq/rseq-s390-bits.h
delete mode 100644 tools/testing/selftests/rseq/rseq-skip.h
create mode 100644 tools/testing/selftests/rseq/rseq-x86-bits.h
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