[tip: sched/core] sched/fair: Make cfs_rq->throttled_csd_list available on !SMP

tip-bot2 for Josh Don
2023-09-24T10:39:37Z

The following commit has been merged into the sched/core branch of tip:

Commit-ID: 30797bce8ef0c73f0c388148ffac92458533b10e
Gitweb: https://git.kernel.org/tip/30797bce8ef0c73f0c388148ffac92458533b10e
Author: Josh Don <joshdon@google.com>
AuthorDate: Fri, 22 Sep 2023 16:05:34 -07:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Sun, 24 Sep 2023 12:08:28 +02:00

sched/fair: Make cfs_rq->throttled_csd_list available on !SMP

This makes the following patch cleaner by avoiding extra CONFIG_SMP
conditionals on the availability of rq->throttled_csd_list.

Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230922230535.296350-1-joshdon@google.com
---
kernel/sched/fair.c | 4 ----
kernel/sched/sched.h | 2 --
2 files changed, 6 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 7572000..41c960e 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5763,11 +5763,9 @@ static bool distribute_cfs_runtime(struct cfs_bandwidth *cfs_b)
if (!cfs_rq_throttled(cfs_rq))
goto next;

-#ifdef CONFIG_SMP
/* Already queued for async unthrottle */
if (!list_empty(&cfs_rq->throttled_csd_list))
goto next;
-#endif

/* By the above checks, this should never be true */
SCHED_WARN_ON(cfs_rq->runtime_remaining > 0);
@@ -6134,9 +6132,7 @@ static void init_cfs_rq_runtime(struct cfs_rq *cfs_rq)
{
cfs_rq->runtime_enabled = 0;
INIT_LIST_HEAD(&cfs_rq->throttled_list);
-#ifdef CONFIG_SMP
INIT_LIST_HEAD(&cfs_rq->throttled_csd_list);
-#endif
}

void start_cfs_bandwidth(struct cfs_bandwidth *cfs_b)
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 9260120..96f8ab7 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -634,9 +634,7 @@ struct cfs_rq {
int throttled;
int throttle_count;
struct list_head throttled_list;
-#ifdef CONFIG_SMP
struct list_head throttled_csd_list;
-#endif
#endif /* CONFIG_CFS_BANDWIDTH */
#endif /* CONFIG_FAIR_GROUP_SCHED */
};