Messages in this thread | | | From | <> | Subject | [PATCH v5 0/2] sched: consider missed ticks when updating cpu load | Date | Tue, 10 Nov 2015 09:36:00 +0900 |
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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
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