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authorIngo Molnar <mingo@elte.hu>2007-09-05 14:32:49 +0200
committerIngo Molnar <mingo@elte.hu>2007-09-05 14:32:49 +0200
commita206c07213cf6372289f189c3774c4c3255a7ae1 (patch)
treea13c33021cc7e7b656305cf20f96205c5f5745a9 /kernel
parenta0dc72601d48b171b4870dfdd0824901a2b2b1a9 (diff)
downloadlinux-linaro-a206c07213cf6372289f189c3774c4c3255a7ae1.tar.gz
sched: debug: fix cfs_rq->wait_runtime accounting
the cfs_rq->wait_runtime debug/statistics counter was not maintained properly - fix this. this also removes some code: text data bss dec hex filename 13420 228 1204 14852 3a04 sched.o.before 13404 228 1204 14836 39f4 sched.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched.c1
-rw-r--r--kernel/sched_fair.c10
2 files changed, 5 insertions, 6 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index c8759ec6d8a..97986f1f0be 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -858,7 +858,6 @@ static void dec_nr_running(struct task_struct *p, struct rq *rq)
static void set_load_weight(struct task_struct *p)
{
- task_rq(p)->cfs.wait_runtime -= p->se.wait_runtime;
p->se.wait_runtime = 0;
if (task_has_rt_policy(p)) {
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 810b52d994e..bac2aff8273 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -194,6 +194,8 @@ __enqueue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se)
update_load_add(&cfs_rq->load, se->load.weight);
cfs_rq->nr_running++;
se->on_rq = 1;
+
+ schedstat_add(cfs_rq, wait_runtime, se->wait_runtime);
}
static inline void
@@ -205,6 +207,8 @@ __dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se)
update_load_sub(&cfs_rq->load, se->load.weight);
cfs_rq->nr_running--;
se->on_rq = 0;
+
+ schedstat_add(cfs_rq, wait_runtime, -se->wait_runtime);
}
static inline struct rb_node *first_fair(struct cfs_rq *cfs_rq)
@@ -574,7 +578,6 @@ static void __enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se)
prev_runtime = se->wait_runtime;
__add_wait_runtime(cfs_rq, se, delta_fair);
- schedstat_add(cfs_rq, wait_runtime, se->wait_runtime);
delta_fair = se->wait_runtime - prev_runtime;
/*
@@ -662,7 +665,6 @@ dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int sleep)
if (tsk->state & TASK_UNINTERRUPTIBLE)
se->block_start = rq_of(cfs_rq)->clock;
}
- cfs_rq->wait_runtime -= se->wait_runtime;
#endif
}
__dequeue_entity(cfs_rq, se);
@@ -1121,10 +1123,8 @@ static void task_new_fair(struct rq *rq, struct task_struct *p)
* The statistical average of wait_runtime is about
* -granularity/2, so initialize the task with that:
*/
- if (sysctl_sched_features & SCHED_FEAT_START_DEBIT) {
+ if (sysctl_sched_features & SCHED_FEAT_START_DEBIT)
se->wait_runtime = -(sched_granularity(cfs_rq) / 2);
- schedstat_add(cfs_rq, wait_runtime, se->wait_runtime);
- }
__enqueue_entity(cfs_rq, se);
}