From: Tim C Chen <[email protected]>
From: Peter Zijlstra (Intel) <[email protected]>
There have been a case where the SD_SHARE_CPUCAPACITY sched group flag
in a parent domain were not set and propagated properly when a degenerate
domain is removed.
Add dump of domain0 sched group flags of a CPU to make debug easier
in the future.
Usage:
cat /debug/sched/domains/cpu0/domain1/groups_flags
to dump cpu0 domain1's sched group flags.
Signed-off-by: Tim Chen <[email protected]>
---
kernel/sched/debug.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 1637b65ba07a..55b50f940feb 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -389,6 +389,7 @@ static void register_sd(struct sched_domain *sd, struct dentry *parent)
#undef SDM
debugfs_create_file("flags", 0444, parent, &sd->flags, &sd_flags_fops);
+ debugfs_create_file("groups_flags", 0444, parent, &sd->groups->flags, &sd_flags_fops);
}
void update_sched_domain_debugfs(void)
--
2.32.0