[PATCH v2 1/6] sched/fair: Only update stats for allowed CPUs when looking for dst group

From: Adam Li
Date: Thu Jul 17 2025 - 02:21:47 EST


A task may not use all the CPUs in a schedule group due to CPU affinity.
Only update schedule group statistics for allowed CPUs.

Signed-off-by: Adam Li <adamli@xxxxxxxxxxxxxxxxxxxxxx>
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 7a14da5396fb..78a3d9b78e07 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -10693,7 +10693,7 @@ static inline void update_sg_wakeup_stats(struct sched_domain *sd,
if (sd->flags & SD_ASYM_CPUCAPACITY)
sgs->group_misfit_task_load = 1;

- for_each_cpu(i, sched_group_span(group)) {
+ for_each_cpu_and(i, sched_group_span(group), p->cpus_ptr) {
struct rq *rq = cpu_rq(i);
unsigned int local;

--
2.34.1