Rafael J. Wysocki 8c34ab1910 cpufreq / sched: SCHED_CPUFREQ_IOWAIT flag to indicate iowait condition ...

Testing indicates that it is possible to improve performace
significantly without increasing energy consumption too much by
teaching cpufreq governors to bump up the CPU performance level if
the in_iowait flag is set for the task in enqueue_task_fair().

For this purpose, define a new cpufreq_update_util() flag
SCHED_CPUFREQ_IOWAIT and modify enqueue_task_fair() to pass that
flag to cpufreq_update_util() in the in_iowait case.  That generally
requires cpufreq_update_util() to be called directly from there,
because update_load_avg() may not be invoked in that case.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Looks-good-to: Steve Muckle <smuckle@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

2016-09-13 23:36:01 +02:00

..

auto_group.c

sched/core: Move the sched_to_prio[] arrays out of line

2015-12-04 10:34:46 +01:00

auto_group.h

sched, timer: Convert usages of ACCESS_ONCE() in the scheduler to READ_ONCE()/WRITE_ONCE()

2015-05-08 12:11:32 +02:00

clock.c

sched/clock: Make local_clock()/cpu_clock() inline

2016-04-13 12:25:22 +02:00

completion.c

sched/completion: Serialize completion_done() with complete()

2015-02-18 14:27:40 +01:00

core.c

sched/cputime: Mitigate performance regression in times()/clock_gettime()

2016-08-10 13:32:56 +02:00

cpuacct.c

sched/cpuacct: Introduce cpuacct.usage_all to show all CPU stats together

2016-07-09 13:56:15 +02:00

cpuacct.h

sched/cpuacct: Simplify the cpuacct code

2016-03-21 11:00:28 +01:00

cpudeadline.c

sched/deadline: Fix wrap-around in DL heap

2016-08-10 13:32:55 +02:00

cpudeadline.h

sched/deadline: Unify dl_time_before() usage

2015-09-23 09:51:25 +02:00

cpufreq_schedutil.c

cpufreq / sched: ignore SMT when determining max cpu capacity

2016-09-01 00:32:57 +02:00

cpufreq.c

cpufreq / sched: Pass flags to cpufreq_update_util()

2016-08-16 22:14:55 +02:00

cpupri.c

sched/core: Use tsk_cpus_allowed() instead of accessing ->cpus_allowed

2016-05-12 09:55:35 +02:00

cpupri.h

sched/cpupri: Remove unnecessary definitions in cpupri.h

2014-11-16 10:58:59 +01:00

cputime.c

sched/cputime: Fix omitted ticks passed in parameter

2016-08-11 16:34:37 +02:00

deadline.c

cpufreq / sched: Pass runqueue pointer to cpufreq_update_util()

2016-08-16 22:16:03 +02:00

debug.c

sched/debug: Always show 'nr_migrations'

2016-06-08 14:34:49 +02:00

fair.c

cpufreq / sched: SCHED_CPUFREQ_IOWAIT flag to indicate iowait condition

2016-09-13 23:36:01 +02:00

features.h

sched/fair: Convert arch_scale_cpu_capacity() from weak function to #define

2015-09-13 09:52:55 +02:00

idle_task.c

locking/lockdep, sched/core: Implement a better lock pinning scheme

2016-05-05 09:23:59 +02:00

idle.c

Merge branch 'sched/urgent' into sched/core, to pick up fixes

2016-06-14 11:04:13 +02:00

loadavg.c

sched/core: Correct off by one bug in load migration calculation

2016-07-13 14:58:20 +02:00

Makefile

cpufreq: schedutil: New governor based on scheduler utilization data

2016-04-02 01:09:12 +02:00

rt.c

cpufreq / sched: Pass runqueue pointer to cpufreq_update_util()

2016-08-16 22:16:03 +02:00

sched.h

cpufreq / sched: Pass runqueue pointer to cpufreq_update_util()

2016-08-16 22:16:03 +02:00

stats.c

sched: use %*pb[l] to print bitmaps including cpumasks and nodemasks

2015-02-13 21:21:37 -08:00

stats.h

sched/debug: Fix /proc/sched_debug regression

2016-06-08 14:31:58 +02:00

stop_task.c

locking/lockdep, sched/core: Implement a better lock pinning scheme

2016-05-05 09:23:59 +02:00

swait.c

wait.[ch]: Introduce the simple waitqueue (swait) implementation

2016-02-25 11:27:16 +01:00

wait.c

sched/wait: Fix the signal handling fix

2015-12-13 14:30:59 -08:00