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sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast()

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The find_user_dsq() function is called from contexts that are already
under RCU read lock protection. Switch from rhashtable_lookup_fast() to
rhashtable_lookup() to avoid redundant RCU locking.

Requires: bee8a520eb ("rhashtable: Use rcu_dereference_all and rcu_dereference_all_check")
Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo 2025-09-21 15:32:40 -10:00
parent 987e00035c
commit e67708823d
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/ext.c
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@ -200,7 +200,7 @@ static struct scx_dispatch_q *find_global_dsq(struct scx_sched *sch,
static struct scx_dispatch_q *find_user_dsq(struct scx_sched *sch, u64 dsq_id)
{
return rhashtable_lookup_fast(&sch->dsq_hash, &dsq_id, dsq_hash_params);
return rhashtable_lookup(&sch->dsq_hash, &dsq_id, dsq_hash_params);
}
/*