From 44671e21e3463f36f6c6e4b691216f60e85840e4 Mon Sep 17 00:00:00 2001 From: K Prateek Nayak Date: Wed, 9 Apr 2025 05:34:46 +0000 Subject: [PATCH] sched/debug: Print the local group's asym_prefer_cpu Add a file to read local group's "asym_prefer_cpu" from debugfs. This information was useful when debugging issues where "asym_prefer_cpu" was incorrectly set to a CPU with a lower asym priority. Signed-off-by: K Prateek Nayak Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/20250409053446.23367-5-kprateek.nayak@amd.com --- kernel/sched/debug.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 56ae54e0ce6a3..557246880a7e0 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -588,6 +588,10 @@ static void register_sd(struct sched_domain *sd, struct dentry *parent) debugfs_create_file("flags", 0444, parent, &sd->flags, &sd_flags_fops); debugfs_create_file("groups_flags", 0444, parent, &sd->groups->flags, &sd_flags_fops); debugfs_create_u32("level", 0444, parent, (u32 *)&sd->level); + + if (sd->flags & SD_ASYM_PACKING) + debugfs_create_u32("group_asym_prefer_cpu", 0444, parent, + (u32 *)&sd->groups->asym_prefer_cpu); } void update_sched_domain_debugfs(void) -- 2.47.2