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sched: Replace update_shares weight distribution with per-entity computation

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Now that the machinery in place is in place to compute contributed load in a
bottom up fashion; replace the shares distribution code within update_shares()
accordingly.

Signed-off-by: Paul Turner <pjt@google.com>
Reviewed-by: Ben Segall <bsegall@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120823141507.061208672@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Paul Turner
2012-10-04 13:18:31 +02:00
committed by Ingo Molnar
parent f1b17280ef
commit 82958366cf
3 changed files with 36 additions and 165 deletions
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36
kernel/sched/sched.h
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@@ -234,11 +234,21 @@ struct cfs_rq {
u64 runnable_load_avg, blocked_load_avg;
atomic64_t decay_counter, removed_load;
u64 last_decay;
#ifdef CONFIG_FAIR_GROUP_SCHED
u32 tg_runnable_contrib;
u64 tg_load_contrib;
#endif
#endif
#endif /* CONFIG_FAIR_GROUP_SCHED */
/*
* h_load = weight * f(tg)
*
* Where f(tg) is the recursive weight fraction assigned to
* this group.
*/
unsigned long h_load;
#endif /* CONFIG_SMP */
#ifdef CONFIG_FAIR_GROUP_SCHED
struct rq *rq; /* cpu runqueue to which this cfs_rq is attached */
@@ -254,28 +264,6 @@ struct cfs_rq {
struct list_head leaf_cfs_rq_list;
struct task_group *tg; /* group that "owns" this runqueue */
#ifdef CONFIG_SMP
/*
* h_load = weight * f(tg)
*
* Where f(tg) is the recursive weight fraction assigned to
* this group.
*/
unsigned long h_load;
/*
* Maintaining per-cpu shares distribution for group scheduling
*
* load_stamp is the last time we updated the load average
* load_last is the last time we updated the load average and saw load
* load_unacc_exec_time is currently unaccounted execution time
*/
u64 load_avg;
u64 load_period;
u64 load_stamp, load_last, load_unacc_exec_time;
unsigned long load_contribution;
#endif /* CONFIG_SMP */
#ifdef CONFIG_CFS_BANDWIDTH
int runtime_enabled;
u64 runtime_expires;