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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-31 02:01:51 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-31 02:01:51 +0200 |
| commit | 642e53ead6aea8740a219ede509a5d138fd4f780 (patch) | |
| tree | 5c4680d0c07315dab24fe7333c62f56bc19ec4e4 /init/Kconfig | |
| parent | Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
| parent | Merge branch 'sched/rt' into sched/core, to pick up completed topic tree (diff) | |
| download | linux-642e53ead6aea8740a219ede509a5d138fd4f780.tar.xz linux-642e53ead6aea8740a219ede509a5d138fd4f780.zip | |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle are:
- Various NUMA scheduling updates: harmonize the load-balancer and
NUMA placement logic to not work against each other. The intended
result is better locality, better utilization and fewer migrations.
- Introduce Thermal Pressure tracking and optimizations, to improve
task placement on thermally overloaded systems.
- Implement frequency invariant scheduler accounting on (some) x86
CPUs. This is done by observing and sampling the 'recent' CPU
frequency average at ~tick boundaries. The CPU provides this data
via the APERF/MPERF MSRs. This hopefully makes our capacity
estimates more precise and keeps tasks on the same CPU better even
if it might seem overloaded at a lower momentary frequency. (As
usual, turbo mode is a complication that we resolve by observing
the maximum frequency and renormalizing to it.)
- Add asymmetric CPU capacity wakeup scan to improve capacity
utilization on asymmetric topologies. (big.LITTLE systems)
- PSI fixes and optimizations.
- RT scheduling capacity awareness fixes & improvements.
- Optimize the CONFIG_RT_GROUP_SCHED constraints code.
- Misc fixes, cleanups and optimizations - see the changelog for
details"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (62 commits)
threads: Update PID limit comment according to futex UAPI change
sched/fair: Fix condition of avg_load calculation
sched/rt: cpupri_find: Trigger a full search as fallback
kthread: Do not preempt current task if it is going to call schedule()
sched/fair: Improve spreading of utilization
sched: Avoid scale real weight down to zero
psi: Move PF_MEMSTALL out of task->flags
MAINTAINERS: Add maintenance information for psi
psi: Optimize switching tasks inside shared cgroups
psi: Fix cpu.pressure for cpu.max and competing cgroups
sched/core: Distribute tasks within affinity masks
sched/fair: Fix enqueue_task_fair warning
thermal/cpu-cooling, sched/core: Move the arch_set_thermal_pressure() API to generic scheduler code
sched/rt: Remove unnecessary push for unfit tasks
sched/rt: Allow pulling unfitting task
sched/rt: Optimize cpupri_find() on non-heterogenous systems
sched/rt: Re-instate old behavior in select_task_rq_rt()
sched/rt: cpupri_find: Implement fallback mechanism for !fit case
sched/fair: Fix reordering of enqueue/dequeue_task_fair()
sched/fair: Fix runnable_avg for throttled cfs
...
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 4f717bfdbfe2..697d109387ed 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -451,6 +451,10 @@ config HAVE_SCHED_AVG_IRQ depends on IRQ_TIME_ACCOUNTING || PARAVIRT_TIME_ACCOUNTING depends on SMP +config SCHED_THERMAL_PRESSURE + bool "Enable periodic averaging of thermal pressure" + depends on SMP + config BSD_PROCESS_ACCT bool "BSD Process Accounting" depends on MULTIUSER |