diff options
| author | Dietmar Eggemann <dietmar.eggemann@arm.com> | 2021-06-01 10:36:16 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-06-17 14:11:42 +0200 |
| commit | 83c5e9d573e1f0757f324d01adb6ee77b49c3f0e (patch) | |
| tree | 8626b42b1790e2a912c6986cfa3832e4b7da0f7f /arch/x86/lib/memcpy_64.S | |
| parent | 9e077b52d86ac364a295b05c916c7478a16865b2 (diff) | |
sched/fair: Return early from update_tg_cfs_load() if delta == 0
In case the _avg delta is 0 there is no need to update se's _avg
(level n) nor cfs_rq's _avg (level n-1). These values stay the same.
Since cfs_rq's _avg isn't changed, i.e. no load is propagated down,
cfs_rq's _sum should stay the same as well.
So bail out after se's _sum has been updated.
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20210601083616.804229-1-dietmar.eggemann@arm.com
Diffstat (limited to 'arch/x86/lib/memcpy_64.S')
0 files changed, 0 insertions, 0 deletions