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PM-runtime: Replace jiffies-based accounting with ktime-based accounting

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Replace jiffies-based accounting for runtime_active_time and
runtime_suspended_time with ktime-based accounting. This makes the
runtime debug counters inline with genpd and other PM subsytems which
use ktime-based accounting.

Timekeeping is initialized before driver_init(). It's only at that time
that PM-runtime can be enabled.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
[switch from ktime to raw nsec]
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Thara Gopinath
2019-01-23 08:50:14 +01:00
committed by Rafael J. Wysocki
parent 58456488e0
commit a08c2a5a31
3 changed files with 20 additions and 14 deletions
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6
include/linux/pm.h
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@@ -633,9 +633,9 @@ struct dev_pm_info {
int runtime_error;
int autosuspend_delay;
u64 last_busy;
unsigned long active_jiffies;
unsigned long suspended_jiffies;
unsigned long accounting_timestamp;
u64 active_time;
u64 suspended_time;
u64 accounting_timestamp;
#endif
struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */
void (*set_latency_tolerance)(struct device *, s32);