diff mbox series

[v3,1/8] sched: fix sched_numa_find_nth_cpu() in non-NUMA case

Message ID 20230430171809.124686-2-yury.norov@gmail.com (mailing list archive)
State Not Applicable
Headers show
Series sched/topology: add for_each_numa_cpu() macro | expand

Commit Message

Yury Norov April 30, 2023, 5:18 p.m. UTC 
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@gmail.com>
---
 include/linux/topology.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/linux/topology.h b/include/linux/topology.h
index fea32377f7c7..52f5850730b3 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 *