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>
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@ -431,13 +431,13 @@ void account_cfs_rq_runtime(struct cfs_rq *cfs_rq, unsigned long delta_exec);
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* Scheduling class tree data structure manipulation methods:
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* Scheduling class tree data structure manipulation methods:
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*/
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*/
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static inline u64 max_vruntime(u64 min_vruntime, u64 vruntime)
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static inline u64 max_vruntime(u64 max_vruntime, u64 vruntime)
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{
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{
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s64 delta = (s64)(vruntime - min_vruntime);
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s64 delta = (s64)(vruntime - max_vruntime);
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if (delta > 0)
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if (delta > 0)
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min_vruntime = vruntime;
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max_vruntime = vruntime;
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return min_vruntime;
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return max_vruntime;
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}
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}
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static inline u64 min_vruntime(u64 min_vruntime, u64 vruntime)
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static inline u64 min_vruntime(u64 min_vruntime, u64 vruntime)
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@ -473,6 +473,7 @@ static void update_min_vruntime(struct cfs_rq *cfs_rq)
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vruntime = min_vruntime(vruntime, se->vruntime);
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vruntime = min_vruntime(vruntime, se->vruntime);
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}
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}
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/* ensure we never gain time by being placed backwards. */
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cfs_rq->min_vruntime = max_vruntime(cfs_rq->min_vruntime, vruntime);
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cfs_rq->min_vruntime = max_vruntime(cfs_rq->min_vruntime, vruntime);
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#ifndef CONFIG_64BIT
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#ifndef CONFIG_64BIT
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smp_wmb();
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smp_wmb();
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