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sched/debug: Print the local group's asym_prefer_cpu

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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 <kprateek.nayak@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250409053446.23367-5-kprateek.nayak@amd.com
This commit is contained in:
K Prateek Nayak 2025-04-09 05:34:46 +00:00 committed by Peter Zijlstra
parent 8157fbc907
commit 44671e21e3
1 changed files with 4 additions and 0 deletions
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4
kernel/sched/debug.c
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@ -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)