tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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sched_ext: Use rhashtable_lookup() instead of rhashtable_lookup_fast()

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.

Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Tejun Heo c8191ee8 340de1f6

+1 -1
+1 -1
kernel/sched/ext.c
··· 207 207 208 208 static struct scx_dispatch_q *find_user_dsq(struct scx_sched *sch, u64 dsq_id) 209 209 { 210 - return rhashtable_lookup_fast(&sch->dsq_hash, &dsq_id, dsq_hash_params); 210 + return rhashtable_lookup(&sch->dsq_hash, &dsq_id, dsq_hash_params); 211 211 } 212 212 213 213 /*