The following commit has been merged into the sched/core branch of tip:
Commit-ID: 8ab63d418d4339d996f80d02a00dbce0aa3ff972
Gitweb: https://git.kernel.org/tip/8ab63d418d4339d996f80d02a00dbce0aa3ff972
Author: Yury Norov <yury.norov@xxxxxxxxx>
AuthorDate: Sat, 19 Aug 2023 07:12:36 -07:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Fri, 15 Sep 2023 13:48:10 +02:00
sched/topology: Fix sched_numa_find_nth_cpu() in non-NUMA case
When CONFIG_NUMA is enabled, sched_numa_find_nth_cpu() searches for a
CPU in sched_domains_numa_masks. The masks includes only online CPUs,
so effectively offline CPUs are skipped.
When CONFIG_NUMA is disabled, the fallback function should be consistent.
Fixes: cd7f55359c90 ("sched: add sched_numa_find_nth_cpu()")
Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Link: https://lore.kernel.org/r/20230819141239.287290-5-yury.norov@xxxxxxxxx
---
include/linux/topology.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/topology.h b/include/linux/topology.h
index fea3237..52f5850 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -251,7 +251,7 @@ extern const struct cpumask *sched_numa_hop_mask(unsigned int node, unsigned int
#else
static __always_inline int sched_numa_find_nth_cpu(const struct cpumask *cpus, int cpu, int node)
{
- return cpumask_nth(cpu, cpus);
+ return cpumask_nth_and(cpu, cpus, cpu_online_mask);
}
static inline const struct cpumask *
|