diff options
| author | Peter Oskolkov <posk@google.com> | 2020-09-30 10:35:32 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-10-03 16:30:52 +0200 |
| commit | 9abb897345ce1d41257567f571a78137c961c405 (patch) | |
| tree | a5a00908bccdf1e192bc2da9a5280e666f8f9d8b /fs/pipe.c | |
| parent | f166b111e0491486fca0d105f09655ab718bd1c8 (diff) | |
sched/fair: Tweak pick_next_entity()
Currently, pick_next_entity(...) has the following structure
(simplified):
[...]
if (last_buddy_ok())
result = last_buddy;
if (next_buddy_ok())
result = next_buddy;
[...]
The intended behavior is to prefer next buddy over last buddy;
the current code somewhat obfuscates this, and also wastes
cycles checking the last buddy when eventually the next buddy is
picked up.
So this patch refactors two 'ifs' above into
[...]
if (next_buddy_ok())
result = next_buddy;
else if (last_buddy_ok())
result = last_buddy;
[...]
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guitttot@linaro.org>
Link: https://lkml.kernel.org/r/20200930173532.1069092-1-posk@google.com
Diffstat (limited to 'fs/pipe.c')
0 files changed, 0 insertions, 0 deletions