Peter Zijlstra bbdacdfed2 sched/debug: Optimize sched_domain sysctl generation ...

Currently we unconditionally destroy all sysctl bits and regenerate
them after we've rebuild the domains (even if that rebuild is a
no-op).

And since we unconditionally (re)build the sysctl for all possible
CPUs, onlining all CPUs gets us O(n^2) time. Instead change this to
only rebuild the bits for CPUs we've actually installed new domains
on.

Reported-by: Ofer Levi(SW) <oferle@mellanox.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2017-08-25 11:12:20 +02:00

..

autogroup.c

sched/autogroup: Fix error reporting printk text in autogroup_create()

2017-08-10 17:06:03 +02:00

autogroup.h

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/autogroup.h>

2017-03-02 08:42:28 +01:00

clock.c

sched/clock: Fix early boot preempt assumption in __set_sched_clock_stable()

2017-05-24 09:10:00 +02:00

completion.c

sched/completion: Document that reinit_completion() must be called after complete_all()

2017-08-16 20:08:10 +02:00

core.c

sched/debug: Intruduce task_state_to_char() helper function

2017-08-10 12:18:20 +02:00

cpuacct.c

sched/cputime: Convert kcpustat to nsecs

2017-02-01 09:13:47 +01:00

cpuacct.h

sched/cpuacct: Simplify the cpuacct code

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

cpudeadline.c

sched/deadline: Change return value of cpudl_find()

2017-08-10 12:18:17 +02:00

cpudeadline.h

sched/deadline: Split cpudl_set() into cpudl_set() and cpudl_clear()

2016-09-05 13:29:43 +02:00

cpufreq_schedutil.c

cpufreq: schedutil: Fix sugov_start() versus sugov_update_shared() race

2017-07-12 14:47:48 +02:00

cpufreq.c

cpufreq / sched: Pass flags to cpufreq_update_util()

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

cpupri.c

sched/cpupri: Don't re-initialize 'struct cpupri'

2017-08-10 12:18:14 +02:00

cpupri.h

sched/cpupri: Remove unnecessary definitions in cpupri.h

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

cputime.c

sched/cputime: Don't use smp_processor_id() in preemptible context

2017-07-14 10:27:15 +02:00

deadline.c

sched/deadline: Change return value of cpudl_find()

2017-08-10 12:18:17 +02:00

debug.c

sched/debug: Optimize sched_domain sysctl generation

2017-08-25 11:12:20 +02:00

fair.c

sched/fair: Fix wake_affine() for !NUMA_BALANCING

2017-08-10 13:25:14 +02:00

features.h

sched/core: Implement new approach to scale select_idle_cpu()

2017-06-08 10:25:17 +02:00

idle_task.c

sched/core: Add wrappers for lockdep_(un)pin_lock()

2017-01-14 11:29:30 +01:00

idle.c

sched/idle: Add deferrable vmstat_updater back

2017-06-08 10:32:09 +02:00

loadavg.c

sched/loadavg: Generalize "_idle" naming to "_nohz"

2017-06-22 11:30:01 +02:00

Makefile

Merge branch 'WIP.sched/core' into sched/core

2017-06-20 12:28:21 +02:00

rt.c

sched/rt: Move RT related code from sched/core.c to sched/rt.c

2017-06-23 10:46:45 +02:00

sched-pelt.h

sched/fair: Move the PELT constants into a generated header

2017-04-14 10:26:37 +02:00

sched.h

sched/debug: Optimize sched_domain sysctl generation

2017-08-25 11:12:20 +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/headers: Move cputime functionality from <linux/sched.h> and <linux/cputime.h> into <linux/sched/cputime.h>

2017-03-03 01:45:22 +01:00

stop_task.c

sched/core: Add wrappers for lockdep_(un)pin_lock()

2017-01-14 11:29:30 +01:00

swait.c

sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>

2017-03-02 08:42:32 +01:00

topology.c

sched/debug: Optimize sched_domain sysctl generation

2017-08-25 11:12:20 +02:00

wait_bit.c

sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming

2017-06-20 12:19:14 +02:00

wait.c

sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming

2017-06-20 12:19:14 +02:00