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sched: Change cfs_rq load avg to unsigned long

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Since the 'u64 runnable_load_avg, blocked_load_avg' in cfs_rq struct are
smaller than 'unsigned long' cfs_rq->load.weight. We don't need u64
vaiables to describe them. unsigned long is more efficient and convenience.

Signed-off-by: Alex Shi <[email protected]>
Reviewed-by: Paul Turner <[email protected]>
Tested-by: Vincent Guittot <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Alex Shi authored and Ingo Molnar committed 2013-06-27 10:07:38 +02:00
1 parent a003a25b22
commit 72a4cf20cb
3 files changed
+5 -8
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kernel/sched/debug.c
+2 -2
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@@ -211,9 +211,9 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight);
#ifdef CONFIG_FAIR_GROUP_SCHED
#ifdef CONFIG_SMP
SEQ_printf(m, " .%-30s: %lld\n", "runnable_load_avg",
SEQ_printf(m, " .%-30s: %ld\n", "runnable_load_avg",
cfs_rq->runnable_load_avg);
SEQ_printf(m, " .%-30s: %lld\n", "blocked_load_avg",
SEQ_printf(m, " .%-30s: %ld\n", "blocked_load_avg",
cfs_rq->blocked_load_avg);
SEQ_printf(m, " .%-30s: %lld\n", "tg_load_avg",
(unsigned long long)atomic64_read(&cfs_rq->tg->load_avg));
kernel/sched/fair.c
+2 -5
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@@ -4181,12 +4181,9 @@ static int tg_load_down(struct task_group *tg, void *data)
if (!tg->parent) {
load = cpu_rq(cpu)->avg.load_avg_contrib;
} else {
unsigned long tmp_rla;
tmp_rla = tg->parent->cfs_rq[cpu]->runnable_load_avg + 1;
load = tg->parent->cfs_rq[cpu]->h_load;
load *= tg->se[cpu]->avg.load_avg_contrib;
load /= tmp_rla;
load = div64_ul(load * tg->se[cpu]->avg.load_avg_contrib,
tg->parent->cfs_rq[cpu]->runnable_load_avg + 1);
}
tg->cfs_rq[cpu]->h_load = load;
kernel/sched/sched.h
+1 -1
View File
@@ -277,7 +277,7 @@ struct cfs_rq {
* This allows for the description of both thread and group usage (in
* the FAIR_GROUP_SCHED case).
*/
u64 runnable_load_avg, blocked_load_avg;
unsigned long runnable_load_avg, blocked_load_avg;
atomic64_t decay_counter, removed_load;
u64 last_decay;