On Mon, 4 Feb 2019 at 17:26, Vincent Guittot <[email protected]> wrote: > > Update accounting_timestamp field only when PM runtime is enable > and don't forget to account the last state before disabling it. > > Suggested-by: Ulf Hansson <[email protected]> > Signed-off-by: Vincent Guittot <[email protected]>
Reviewed-by: Ulf Hansson <[email protected]> Kind regards Uffe > --- > drivers/base/power/runtime.c | 18 ++++++++++-------- > 1 file changed, 10 insertions(+), 8 deletions(-) > > diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c > index 50740da..ed62cca 100644 > --- a/drivers/base/power/runtime.c > +++ b/drivers/base/power/runtime.c > @@ -66,11 +66,14 @@ static int rpm_suspend(struct device *dev, int rpmflags); > */ > void update_pm_runtime_accounting(struct device *dev) > { > - u64 now = ktime_get_mono_fast_ns(); > - u64 last = dev->power.accounting_timestamp; > - u64 delta; > + u64 now, last, delta; > > - dev->power.accounting_timestamp = now; > + if (dev->power.disable_depth > 0) > + return; > + > + last = dev->power.accounting_timestamp; > + > + dev->power.accounting_timestamp = now = ktime_get_mono_fast_ns(); > > /* > * Because ktime_get_mono_fast_ns() is not monotonic during > @@ -82,9 +85,6 @@ void update_pm_runtime_accounting(struct device *dev) > > delta = now - last; > > - if (dev->power.disable_depth > 0) > - return; > - > if (dev->power.runtime_status == RPM_SUSPENDED) > dev->power.suspended_time += delta; > else > @@ -1298,6 +1298,9 @@ void __pm_runtime_disable(struct device *dev, bool > check_resume) > pm_runtime_put_noidle(dev); > } > > + /* Update time accounting before disabling pm runtime */ > + update_pm_runtime_accounting(dev); > + > if (!dev->power.disable_depth++) > __pm_runtime_barrier(dev); > > @@ -1521,7 +1524,6 @@ void pm_runtime_init(struct device *dev) > dev->power.request_pending = false; > dev->power.request = RPM_REQ_NONE; > dev->power.deferred_resume = false; > - dev->power.accounting_timestamp = 0; > INIT_WORK(&dev->power.work, pm_runtime_work); > > dev->power.timer_expires = 0; > -- > 2.7.4 >
