diff options
| author | Thara Gopinath <thara.gopinath@linaro.org> | 2019-01-23 08:50:14 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-01-31 10:45:10 +0100 |
| commit | a08c2a5a31941131c41feaa0429e4c8854cf48f2 (patch) | |
| tree | de5a00edb1f29ee153916682ddb4160e4a3ac074 /drivers/base/power/sysfs.c | |
| parent | PM-runtime: update accounting_timestamp on enable (diff) | |
| download | linux-a08c2a5a31941131c41feaa0429e4c8854cf48f2.tar.xz linux-a08c2a5a31941131c41feaa0429e4c8854cf48f2.zip | |
PM-runtime: Replace jiffies-based accounting with ktime-based accounting
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>
Diffstat (limited to 'drivers/base/power/sysfs.c')
| -rw-r--r-- | drivers/base/power/sysfs.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index d713738ce796..96c8a227610a 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -125,9 +125,12 @@ static ssize_t runtime_active_time_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret; + u64 tmp; spin_lock_irq(&dev->power.lock); update_pm_runtime_accounting(dev); - ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies)); + tmp = dev->power.active_time; + do_div(tmp, NSEC_PER_MSEC); + ret = sprintf(buf, "%llu\n", tmp); spin_unlock_irq(&dev->power.lock); return ret; } @@ -138,10 +141,12 @@ static ssize_t runtime_suspended_time_show(struct device *dev, struct device_attribute *attr, char *buf) { int ret; + u64 tmp; spin_lock_irq(&dev->power.lock); update_pm_runtime_accounting(dev); - ret = sprintf(buf, "%i\n", - jiffies_to_msecs(dev->power.suspended_jiffies)); + tmp = dev->power.suspended_time; + do_div(tmp, NSEC_PER_MSEC); + ret = sprintf(buf, "%llu\n", tmp); spin_unlock_irq(&dev->power.lock); return ret; } |