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pmdomain: core: Add residency reflection for domain-idlestates to debugfs

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For regular cpuidle states we are reflecting over the selected/entered
state to see if the sleep-duration meets the residency for the state. The
output from the reflection is an "above" value to indicate the number of
times the state was too deep and a "below" value for the number of times it
was too shallow.

Let's implement the similar thing for genpd's domain-idlestates along with
genpd's governor and put the information in the genpd's debugfs.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20250314100103.1294715-5-ulf.hansson@linaro.org
This commit is contained in:
Ulf Hansson
2025-03-14 11:00:58 +01:00
parent d0252ba821
commit 0a8a888167
3 changed files with 43 additions and 3 deletions
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4
include/linux/pm_domain.h
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@@ -142,6 +142,8 @@ struct genpd_governor_data {
bool max_off_time_changed;
ktime_t next_wakeup;
ktime_t next_hrtimer;
ktime_t last_enter;
bool reflect_residency;
bool cached_power_down_ok;
bool cached_power_down_state_idx;
};
@@ -153,6 +155,8 @@ struct genpd_power_state {
s64 residency_ns;
u64 usage;
u64 rejected;
u64 above;
u64 below;
struct fwnode_handle *fwnode;
u64 idle_time;
void *data;