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80f5c1b84b
linux/kernel/sched
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Peter Zijlstra 80f5c1b84b sched/core: Add missing update_rq_clock() in detach_task_cfs_rq() 
Instead of adding the update_rq_clock() all the way at the bottom of
the callstack, add one at the top, this to aid later effort to
minimize update_rq_lock() calls.

  WARNING: CPU: 0 PID: 1 at ../kernel/sched/sched.h:797 detach_task_cfs_rq()
  rq->clock_update_flags < RQCF_ACT_SKIP

  Call Trace:
    dump_stack()
    __warn()
    warn_slowpath_fmt()
    detach_task_cfs_rq()
    switched_from_fair()
    __sched_setscheduler()
    _sched_setscheduler()
    sched_set_stop_task()
    cpu_stop_create()
    __smpboot_create_thread.part.2()
    smpboot_register_percpu_thread_cpumask()
    cpu_stop_init()
    do_one_initcall()
    ? print_cpu_info()
    kernel_init_freeable()
    ? rest_init()
    kernel_init()
    ret_from_fork()

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-14 11:29:33 +01:00
..
auto_group.c sched/autogroup: Fix 64-bit kernel nice level adjustment 2016-11-24 05:45:02 +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/core: Add missing update_rq_clock() in detach_task_cfs_rq() 2017-01-14 11:29:33 +01:00
cpuacct.c sched/cpuacct: Avoid %lld seq_printf warning 2016-11-16 10:29:03 +01:00
cpuacct.h sched/cpuacct: Simplify the cpuacct code 2016-03-21 11:00:28 +01:00
cpudeadline.c sched/deadline: Split cpudl_set() into cpudl_set() and cpudl_clear() 2016-09-05 13:29:43 +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: Rectify comment in sugov_irq_work() function 2016-11-24 21:50:59 +01:00
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
cputime.c sched/cputime: Rename vtime_account_user() to vtime_flush() 2017-01-14 09:54:13 +01:00
deadline.c sched/core: Add wrappers for lockdep_(un)pin_lock() 2017-01-14 11:29:30 +01:00
debug.c Merge branch 'for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2016-10-14 12:18:50 -07:00
fair.c sched/core: Add missing update_rq_clock() in post_init_entity_util_avg() 2017-01-14 11:29:32 +01:00
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 sched/core: Add wrappers for lockdep_(un)pin_lock() 2017-01-14 11:29:30 +01:00
idle.c sched/idle: Add support for tasks that inject idle 2016-11-29 14:02:21 +01:00
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 sched/core: Add wrappers for lockdep_(un)pin_lock() 2017-01-14 11:29:30 +01:00
sched.h sched/core: Add wrappers for lockdep_(un)pin_lock() 2017-01-14 11:29:30 +01:00
stats.c
stats.h sched/debug: Rename 'schedstat_val()' -> 'schedstat_val_or_zero()' 2016-09-05 13:29:46 +02:00
stop_task.c sched/core: Add wrappers for lockdep_(un)pin_lock() 2017-01-14 11:29:30 +01:00
swait.c wait.[ch]: Introduce the simple waitqueue (swait) implementation 2016-02-25 11:27:16 +01:00
wait.c mm: remove per-zone hashtable of bitlock waitqueues 2016-10-27 09:27:57 -07:00