Chris Redpath dfda97185e ANDROID: sched/fair: Reduce balance interval to 1 jiffy if we have a misfit task ...

It is quite a common occurrence that we have a misfit task (a task
running on a CPU which is close to the capacity limit of that CPU)
in the system AND we have recently done a load balance operation.
Normal load-balance rate limiting means we can leave those tasks on
the restrictive CPU for a few hundred ms before we move them.

Inspired by the work Leo Yan did on balancing misfits.

This patch reduces the balance interval to one jiffy when there are such
tasks running.

There appears to be no impact on interactive performance from this
patch.

Change-Id: I71d74734d3bd6bca80476c0f466ba48914b7ac02
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Git-commit: 84c88fc37932db51b87af8df3cedc621cb5c6e97
Git-repo: https://android.googlesource.com/kernel/common
[clingutla@codeaurora.org: Took only partial part from commit
  '84c88fc37932("ANDROID: Combined EAS Load Balance Tweaks")',
  and skip using 1 jiffy for busy balancing]
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>

2019-05-13 02:16:17 -07:00

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bpf

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cgroup

cpuset: Restore tasks affinity while moving across cpusets

2019-05-07 08:31:31 +05:30

configs

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debug

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dma

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events

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gcov

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irq

genirq: Respect IRQCHIP_SKIP_SET_WAKE in irq_chip_set_wake_parent()

2019-03-25 16:14:31 -06:00

livepatch

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locking

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power

power: em: correct increasing freq/power ratio

2019-05-03 16:47:38 -07:00

printk

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rcu

Merge android-4.19.31 (bb418a1) into msm-4.19

2019-04-05 01:06:22 -07:00

sched

ANDROID: sched/fair: Reduce balance interval to 1 jiffy if we have a misfit task

2019-05-13 02:16:17 -07:00

time

hrtimer: Initialize cpu_base.next_timer to NULL conditionally

2019-03-25 10:35:22 -07:00

trace

Merge android-4.19.31 (bb418a1) into msm-4.19

2019-04-05 01:06:22 -07:00

.gitignore

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acct.c

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async.c

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audit_fsnotify.c

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audit_tree.c

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audit_watch.c

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audit.c

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audit.h

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auditfilter.c

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auditsc.c

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backtracetest.c

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bounds.c

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capability.c

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cfi.c

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compat.c

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configs.c

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context_tracking.c

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cpu_pm.c

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cpu.c

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crash_core.c

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crash_dump.c

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cred.c

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delayacct.c

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dma.c

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elfcore.c

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exec_domain.c

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exit.c

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extable.c

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fail_function.c

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fork.c

mm: protect against PTE changes done by dup_mmap()

2019-04-01 21:57:33 -07:00

freezer.c

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futex_compat.c

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futex.c

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groups.c

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hung_task.c

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iomem.c

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irq_work.c

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jump_label.c

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kallsyms.c

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kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kcov.c

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kexec_core.c

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kexec_file.c

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kexec_internal.h

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kexec.c

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kmod.c

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kprobes.c

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ksysfs.c

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kthread.c

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latencytop.c

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Makefile

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memremap.c

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module_signing.c

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module-internal.h

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module.c

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notifier.c

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nsproxy.c

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padata.c

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panic.c

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params.c

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pid_namespace.c

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pid.c

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profile.c

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ptrace.c

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range.c

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reboot.c

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relay.c

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resource.c

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rseq.c

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seccomp.c

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signal.c

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smp.c

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smpboot.c

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smpboot.h

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softirq.c

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stacktrace.c

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stop_machine.c

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sys_ni.c

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sys.c

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sysctl_binary.c

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sysctl.c

sched: Improve the scheduler

2019-05-06 11:34:41 +05:30

task_work.c

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taskstats.c

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test_kprobes.c

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torture.c

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tracepoint.c

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tsacct.c

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ucount.c

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uid16.c

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uid16.h

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umh.c

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up.c

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user_namespace.c

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user-return-notifier.c

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user.c

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utsname_sysctl.c

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utsname.c

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watchdog_hld.c

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watchdog.c

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workqueue_internal.h

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workqueue.c

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