From 0bb040a44381261c0729636abbe03caeedb7d72e Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 15 Jan 2014 17:15:13 +0100 Subject: [PATCH] sched: Fix up attr::sched_priority warning Fengguang Wu reported the following build warning: > kernel/sched/core.c:3067 __sched_setscheduler() warn: unsigned 'attr->sched_priority' is never less than zero. Since it doesn't make sense for attr::sched_priority to be negative, remove the check, since we already test for an upper limit any actual negative values passed in through the old param::sched_priority field will still be detected. Reported-by: Fengguang Wu Signed-off-by: Peter Zijlstra Cc: Juri Lelli Cc: Dario Faggioli Fixes: d50dde5a10f3 ("sched: Add new scheduler syscalls to support an extended scheduling parameters ABI") Link: http://lkml.kernel.org/n/tip-fid9nalzii2r5voxtf4eh5kz@git.kernel.org Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index e9212eb..5a6ccdf 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3282,8 +3282,7 @@ recheck: * 1..MAX_USER_RT_PRIO-1, valid priority for SCHED_NORMAL, * SCHED_BATCH and SCHED_IDLE is 0. */ - if (attr->sched_priority < 0 || - (p->mm && attr->sched_priority > MAX_USER_RT_PRIO-1) || + if ((p->mm && attr->sched_priority > MAX_USER_RT_PRIO-1) || (!p->mm && attr->sched_priority > MAX_RT_PRIO-1)) return -EINVAL; if ((dl_policy(policy) && !__checkparam_dl(attr)) || -- 2.7.4