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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-09-05 08:32:49 -0400
committerIngo Molnar <mingo@elte.hu>2007-09-05 08:32:49 -0400
commit4a55b45036a677fac43fe81ddf7fdcd007aaaee7 (patch)
tree86558fa9997e28194d84b997011ed91cde49746c /kernel
parent7c92e54f6f9601cfa9d8894ee248abcf62ed9a1c (diff)
sched: improve prev_sum_exec_runtime setting
Second preparatory patch for fix-ideal runtime: Mark prev_sum_exec_runtime at the beginning of our run, the same spot that adds our wait period to wait_runtime. This seems a more natural location to do this, and it also reduces the code a bit: text data bss dec hex filename 13397 228 1204 14829 39ed sched.o.before 13391 228 1204 14823 39e7 sched.o.after Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched_fair.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index f0dd4be1a3a4..2d01bbc2d04a 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -684,10 +684,8 @@ __check_preempt_curr_fair(struct cfs_rq *cfs_rq, struct sched_entity *se,
684 * preempt the current task unless the best task has 684 * preempt the current task unless the best task has
685 * a larger than sched_granularity fairness advantage: 685 * a larger than sched_granularity fairness advantage:
686 */ 686 */
687 if (__delta > niced_granularity(curr, granularity)) { 687 if (__delta > niced_granularity(curr, granularity))
688 resched_task(rq_of(cfs_rq)->curr); 688 resched_task(rq_of(cfs_rq)->curr);
689 curr->prev_sum_exec_runtime = curr->sum_exec_runtime;
690 }
691} 689}
692 690
693static inline void 691static inline void
@@ -703,6 +701,7 @@ set_next_entity(struct cfs_rq *cfs_rq, struct sched_entity *se)
703 update_stats_wait_end(cfs_rq, se); 701 update_stats_wait_end(cfs_rq, se);
704 update_stats_curr_start(cfs_rq, se); 702 update_stats_curr_start(cfs_rq, se);
705 set_cfs_rq_curr(cfs_rq, se); 703 set_cfs_rq_curr(cfs_rq, se);
704 se->prev_sum_exec_runtime = se->sum_exec_runtime;
706} 705}
707 706
708static struct sched_entity *pick_next_entity(struct cfs_rq *cfs_rq) 707static struct sched_entity *pick_next_entity(struct cfs_rq *cfs_rq)