diff options
| author | Changwoo Min <changwoo@igalia.com> | 2025-10-21 07:09:06 +0900 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-10-22 21:44:37 +0200 |
| commit | ee50b8bb6b5d62fc2ebff872ee7ecb3a9380ec64 (patch) | |
| tree | c97bbd0cfbefadee7c54c8eae0d752881fce9fce /kernel/power | |
| parent | cbe5aeedecc72314c3a8fd0d41d9b270f576aee1 (diff) | |
PM: EM: Expose the ID of a performance domain via debugfs
For ease of debugging, let's expose the assigned ID of a performance
domain through debugfs (e.g., /sys/kernel/debug/energy_model/cpu0/id).
Signed-off-by: Changwoo Min <changwoo@igalia.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://patch.msgid.link/20251020220914.320832-3-changwoo@igalia.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/energy_model.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 2047b546ad11..756debf5406a 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -126,6 +126,16 @@ static int em_debug_flags_show(struct seq_file *s, void *unused) } DEFINE_SHOW_ATTRIBUTE(em_debug_flags); +static int em_debug_id_show(struct seq_file *s, void *unused) +{ + struct em_perf_domain *pd = s->private; + + seq_printf(s, "%d\n", pd->id); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(em_debug_id); + static void em_debug_create_pd(struct device *dev) { struct em_dbg_info *em_dbg; @@ -142,6 +152,8 @@ static void em_debug_create_pd(struct device *dev) debugfs_create_file("flags", 0444, d, dev->em_pd, &em_debug_flags_fops); + debugfs_create_file("id", 0444, d, dev->em_pd, &em_debug_id_fops); + em_dbg = devm_kcalloc(dev, dev->em_pd->nr_perf_states, sizeof(*em_dbg), GFP_KERNEL); if (!em_dbg) |