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sched: Fix variable name misnomer, add comments 

The min_vruntime variable actually stores the maximum value.
The added comment was taken from place_entity function.

Signed-off-by: Andrei Epure <epure.andrei@gmail.com>
Cc: peterz@infradead.org
Link: http://lkml.kernel.org/r/1363115544-1964-1-git-send-email-epure.andrei@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andrei Epure 2013-03-12 21:12:24 +02:00 committed by Ingo Molnar
parent 660cc00f8c
commit 1bf08230f7
1 changed files with 5 additions and 4 deletions
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9
kernel/sched/fair.c
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@ -431,13 +431,13 @@ void account_cfs_rq_runtime(struct cfs_rq *cfs_rq, unsigned long delta_exec);
* Scheduling class tree data structure manipulation methods:
*/
static inline u64 max_vruntime(u64 min_vruntime, u64 vruntime)
static inline u64 max_vruntime(u64 max_vruntime, u64 vruntime)
{
s64 delta = (s64)(vruntime - min_vruntime);
s64 delta = (s64)(vruntime - max_vruntime);
if (delta > 0)
min_vruntime = vruntime;
max_vruntime = vruntime;
return min_vruntime;
return max_vruntime;
}
static inline u64 min_vruntime(u64 min_vruntime, u64 vruntime)
@ -473,6 +473,7 @@ static void update_min_vruntime(struct cfs_rq *cfs_rq)
vruntime = min_vruntime(vruntime, se->vruntime);
}
/* ensure we never gain time by being placed backwards. */
cfs_rq->min_vruntime = max_vruntime(cfs_rq->min_vruntime, vruntime);
#ifndef CONFIG_64BIT
smp_wmb();