diff options
| author | Dongsheng Yang <yangds.fnst@cn.fujitsu.com> | 2014-05-08 18:35:15 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-05-22 11:16:31 +0200 |
| commit | a9467fa3cd2d5bf39e7cb7d0706d29d7ef4df212 (patch) | |
| tree | 3cdc0ddf76f3b081ba3b5a2b061638595d117a33 /kernel/sched | |
| parent | caffcdd8d27ba78730d5540396ce72ad022aff2c (diff) | |
| download | lwn-a9467fa3cd2d5bf39e7cb7d0706d29d7ef4df212.tar.gz lwn-a9467fa3cd2d5bf39e7cb7d0706d29d7ef4df212.zip | |
sched: Use clamp() and clamp_val() to make sys_nice() more readable
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1399541715-19568-1-git-send-email-yangds.fnst@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 6340c601475d..f5605b6deea4 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3057,17 +3057,10 @@ SYSCALL_DEFINE1(nice, int, increment) * We don't have to worry. Conceptually one call occurs first * and we have a single winner. */ - if (increment < -40) - increment = -40; - if (increment > 40) - increment = 40; - + increment = clamp(increment, -NICE_WIDTH, NICE_WIDTH); nice = task_nice(current) + increment; - if (nice < MIN_NICE) - nice = MIN_NICE; - if (nice > MAX_NICE) - nice = MAX_NICE; + nice = clamp_val(nice, MIN_NICE, MAX_NICE); if (increment < 0 && !can_nice(current, nice)) return -EPERM; |