diff options
Diffstat (limited to 'drivers/base/power/domain.c')
| -rw-r--r-- | drivers/base/power/domain.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 60303aa28587..431488914982 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -209,6 +209,34 @@ static void genpd_sd_counter_inc(struct generic_pm_domain *genpd) smp_mb__after_atomic(); } +#ifdef CONFIG_DEBUG_FS +static void genpd_update_accounting(struct generic_pm_domain *genpd) +{ + ktime_t delta, now; + + now = ktime_get(); + delta = ktime_sub(now, genpd->accounting_time); + + /* + * If genpd->status is active, it means we are just + * out of off and so update the idle time and vice + * versa. + */ + if (genpd->status == GPD_STATE_ACTIVE) { + int state_idx = genpd->state_idx; + + genpd->states[state_idx].idle_time = + ktime_add(genpd->states[state_idx].idle_time, delta); + } else { + genpd->on_time = ktime_add(genpd->on_time, delta); + } + + genpd->accounting_time = now; +} +#else +static inline void genpd_update_accounting(struct generic_pm_domain *genpd) {} +#endif + static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed) { unsigned int state_idx = genpd->state_idx; @@ -361,6 +389,7 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool one_dev_on, } genpd->status = GPD_STATE_POWER_OFF; + genpd_update_accounting(genpd); list_for_each_entry(link, &genpd->slave_links, slave_node) { genpd_sd_counter_dec(link->master); @@ -413,6 +442,8 @@ static int genpd_power_on(struct generic_pm_domain *genpd, unsigned int depth) goto err; genpd->status = GPD_STATE_ACTIVE; + genpd_update_accounting(genpd); + return 0; err: @@ -1540,6 +1571,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd, genpd->max_off_time_changed = true; genpd->provider = NULL; genpd->has_provider = false; + genpd->accounting_time = ktime_get(); genpd->domain.ops.runtime_suspend = genpd_runtime_suspend; genpd->domain.ops.runtime_resume = genpd_runtime_resume; genpd->domain.ops.prepare = pm_genpd_prepare; |