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sched/fair: Remove unused cfs_rq.idle_nr_running

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cfs_rq.idle_nr_running field is not used anywhere so we can remove the
useless associated computation. Last user went in commit 5e963f2bd4
("sched/fair: Commit to EEVDF").

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lore.kernel.org/r/20241202174606.4074512-9-vincent.guittot@linaro.org
This commit is contained in:
Vincent Guittot
2024-12-09 11:48:12 +01:00
committed by Peter Zijlstra
parent 31898e7b87
commit 43eef7c3a4
3 changed files with 1 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/sched/debug.c
-2
View File
@@ -846,8 +846,6 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
SEQ_printf(m, " .%-30s: %d\n", "nr_running", cfs_rq->nr_running);
SEQ_printf(m, " .%-30s: %d\n", "h_nr_runnable", cfs_rq->h_nr_runnable);
SEQ_printf(m, " .%-30s: %d\n", "h_nr_queued", cfs_rq->h_nr_queued);
SEQ_printf(m, " .%-30s: %d\n", "idle_nr_running",
cfs_rq->idle_nr_running);
SEQ_printf(m, " .%-30s: %d\n", "h_nr_idle", cfs_rq->h_nr_idle);
SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight);
#ifdef CONFIG_SMP
kernel/sched/fair.c
+1 -13
View File
@@ -3674,8 +3674,6 @@ account_entity_enqueue(struct cfs_rq *cfs_rq, struct sched_entity *se)
}
#endif
cfs_rq->nr_running++;
if (se_is_idle(se))
cfs_rq->idle_nr_running++;
}
static void
@@ -3689,8 +3687,6 @@ account_entity_dequeue(struct cfs_rq *cfs_rq, struct sched_entity *se)
}
#endif
cfs_rq->nr_running--;
if (se_is_idle(se))
cfs_rq->idle_nr_running--;
}
/*
@@ -13507,7 +13503,7 @@ int sched_group_set_idle(struct task_group *tg, long idle)
for_each_possible_cpu(i) {
struct rq *rq = cpu_rq(i);
struct sched_entity *se = tg->se[i];
struct cfs_rq *parent_cfs_rq, *grp_cfs_rq = tg->cfs_rq[i];
struct cfs_rq *grp_cfs_rq = tg->cfs_rq[i];
bool was_idle = cfs_rq_is_idle(grp_cfs_rq);
long idle_task_delta;
struct rq_flags rf;
@@ -13518,14 +13514,6 @@ int sched_group_set_idle(struct task_group *tg, long idle)
if (WARN_ON_ONCE(was_idle == cfs_rq_is_idle(grp_cfs_rq)))
goto next_cpu;
if (se->on_rq) {
parent_cfs_rq = cfs_rq_of(se);
if (cfs_rq_is_idle(grp_cfs_rq))
parent_cfs_rq->idle_nr_running++;
else
parent_cfs_rq->idle_nr_running--;
}
idle_task_delta = grp_cfs_rq->h_nr_queued -
grp_cfs_rq->h_nr_idle;
if (!cfs_rq_is_idle(grp_cfs_rq))
kernel/sched/sched.h
-1
View File
@@ -648,7 +648,6 @@ struct cfs_rq {
unsigned int nr_running;
unsigned int h_nr_queued; /* SCHED_{NORMAL,BATCH,IDLE} */
unsigned int h_nr_runnable; /* SCHED_{NORMAL,BATCH,IDLE} */
unsigned int idle_nr_running; /* SCHED_IDLE */
unsigned int h_nr_idle; /* SCHED_IDLE */
s64 avg_vruntime;