Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1266124

[PATCH v5 0/2] sched: consider missed ticks when updating cpu load

Show all headers | View raw

From: Byungchul Park <byungchul.park@lge.com>

change from v4 to v5
- fix comments and commit message
- take new_load into account in update_cpu_load_nohz() and __update_cpu_load()
  because it's non-zero in NOHZ_FULL

change from v3 to v4
- focus the problem on full NOHZ

change from v2 to v3
- add a patch which make __update_cpu_load() handle active tickless

change from v1 to v2
- add some additional commit message (logic is same exactly)

additionally i tried to use the return value of hrtimer_forward() instead of
jiffies to get pending tick for updating cpu load. it's easy for
update_cpu_load_nohz() to do that. but for update_idle_cpu_load(), i need
more time to think about how to implement it nicely.

and i will try to fix other stuffs caused by full NOHZ later with another
patch. i decided to send this patch at first because "cpu load update" is a
standalone problem which is not coupled with other stuffs.

Byungchul Park (2):
  sched: make __update_cpu_load() handle NOHZ_FULL tickless
  sched: make update_cpu_load_nohz() consider missed ticks in NOHZ_FULL

 include/linux/sched.h    |    4 ++--
 kernel/sched/fair.c      |   57 +++++++++++++++++++++++++++++++++++++---------
 kernel/time/tick-sched.c |    8 +++----
 3 files changed, 52 insertions(+), 17 deletions(-)

-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH v5 0/2] sched: consider missed ticks when updating cpu load <byungchul.park@lge.com> - 2015-11-10 01:40 +0100
  [PATCH v5 2/2] sched: make update_cpu_load_nohz() consider missed ticks in NOHZ_FULL <byungchul.park@lge.com> - 2015-11-10 01:40 +0100
    Re: [PATCH v5 2/2] sched: make update_cpu_load_nohz() consider  missed ticks in NOHZ_FULL Byungchul Park <byungchul.park@lge.com> - 2015-11-11 10:50 +0100
  [PATCH v5 1/2] sched: make __update_cpu_load() handle NOHZ_FULL tickless <byungchul.park@lge.com> - 2015-11-10 01:40 +0100
  Re: [PATCH v5 0/2] sched: consider missed ticks when updating cpu  load Byungchul Park <byungchul.park@lge.com> - 2015-11-11 10:40 +0100
    Re: [PATCH v5 0/2] sched: consider missed ticks when updating cpu  load Byungchul Park <byungchul.park@lge.com> - 2015-11-12 08:10 +0100

csiph-web