[RFC v2 3/9] sched/core: Dont allow to use CPU marked as avoid
Shrikanth Hegde
sshegde at linux.ibm.com
Thu Jun 26 05:11:02 AEST 2025
Don't allow the CPU marked as avoid. This is used when task is pushed out
of a CPU marked as avoid in select_fallback_rq
Signed-off-by: Shrikanth Hegde <sshegde at linux.ibm.com>
---
kernel/sched/core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 0e3a00e2a2cc..13e44d7a0b90 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2437,6 +2437,10 @@ static inline bool is_cpu_allowed(struct task_struct *p, int cpu)
if (cpu_dying(cpu))
return false;
+ /* CPU marked as avoid, shouldn't chosen to run any task*/
+ if (cpu_avoid(cpu))
+ return false;
+
/* But are allowed during online. */
return cpu_online(cpu);
}
--
2.43.0
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