Commit-ID: a9467fa3cd2d5bf39e7cb7d0706d29d7ef4df212 Gitweb: http://git.kernel.org/tip/a9467fa3cd2d5bf39e7cb7d0706d29d7ef4df212 Author: Dongsheng Yang <yangds.f...@cn.fujitsu.com> AuthorDate: Thu, 8 May 2014 18:35:15 +0900 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 22 May 2014 11:16:31 +0200
sched: Use clamp() and clamp_val() to make sys_nice() more readable Suggested-by: Kees Cook <keesc...@chromium.org> Signed-off-by: Dongsheng Yang <yangds.f...@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/1399541715-19568-1-git-send-email-yangds.f...@cn.fujitsu.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/core.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 6340c60..f5605b6 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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
