Commit 1f2d9ffc authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull scheduler updates from Ingo Molnar:

 - 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

* tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits)
  sched/rt: pick_next_rt_entity(): check list_entry
  sched/deadline: Add more reschedule cases to prio_changed_dl()
  sched/fair: sanitize vruntime of entity being placed
  sched/fair: Remove capacity inversion detection
  sched/fair: unlink misfit task from cpu overutilized
  objtool: mem*() are not uaccess safe
  cpuidle: Fix poll_idle() noinstr annotation
  sched/clock: Make local_clock() noinstr
  sched/clock/x86: Mark sched_clock() noinstr
  x86/pvclock: Improve atomic update of last_value in pvclock_clocksource_read()
  x86/atomics: Always inline arch_atomic64*()
  cpuidle: tracing, preempt: Squash _rcuidle tracing
  cpuidle: tracing: Warn about !rcu_is_watching()
  cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG
  cpuidle: drivers: firmware: psci: Dont instrument suspend code
  KVM: selftests: Fix build of rseq test
  exit: Detect and fix irq disabled state in oops
  cpuidle, arm64: Fix the ARM64 cpuidle logic
  cpuidle: mvebu: Fix duplicate flags assignment
  sched/fair: Limit sched slice duration
  ...
parents a2f0e7ee 7c4a5b89

Documentation/admin-guide/cgroup-v2.rst

+3 −0
Original line number Diff line number Diff line
@@ -619,6 +619,8 @@ process migrations. 
and is an example of this type.





.. _cgroupv2-limits-distributor:



Limits

------
@@ -635,6 +637,7 @@ process migrations. 
"io.max" limits the maximum BPS and/or IOPS that a cgroup can consume

on an IO device and is an example of this type.



.. _cgroupv2-protections-distributor:



Protections

-----------

Documentation/scheduler/index.rst

+1 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ Linux Scheduler 
    sched-capacity

    sched-energy

    schedutil

    sched-util-clamp

    sched-nice-design

    sched-rt-group

    sched-stats

Documentation/scheduler/sched-util-clamp.rst

0 → 100644
+741 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/alpha/kernel/process.c

+0 −1
Original line number Diff line number Diff line
@@ -57,7 +57,6 @@ EXPORT_SYMBOL(pm_power_off); 
void arch_cpu_idle(void)

{

	wtint(0);

	raw_local_irq_enable();

}



void arch_cpu_idle_dead(void)

arch/alpha/kernel/vmlinux.lds.S

+0 −1
Original line number Diff line number Diff line
@@ -27,7 +27,6 @@ SECTIONS 
		HEAD_TEXT

		TEXT_TEXT

		SCHED_TEXT

		CPUIDLE_TEXT

		LOCK_TEXT

		*(.fixup)

		*(.gnu.warning)