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| author | Peter Zijlstra <peterz@infradead.org> | 2023-07-07 15:57:05 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-07-13 15:21:53 +0200 |
| commit | ed74cc4995d314ea6cbf406caf978c442f451fa5 (patch) | |
| tree | a213c8627fdaee78e8426d96ff341cb7fc087601 /kernel/sched | |
| parent | 17953249bf02448efaed75b097aa2e9086ca7685 (diff) | |
| download | linux-ed74cc4995d314ea6cbf406caf978c442f451fa5.tar.gz | |
sched/debug: Dump domains' sched group flags
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 domain 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: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Link: https://lore.kernel.org/r/ed1749262d94d95a8296c86a415999eda90bcfe3.1688770494.git.tim.c.chen@linux.intel.com
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/debug.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 066ff1c8ae4eb3..aeeba46a096b98 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -427,6 +427,7 @@ 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) |