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wil6210: add statistics for suspend time

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Add statistics for total, min and max suspend time, that
calculates the time the 11ad device was in suspend.
Those statistics will help to estimate the power impact
of d3hot feature.

Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Maya Erez
2017-08-08 14:16:45 +03:00
committed by Kalle Valo
parent c6622116c5
commit 262345265e
4 changed files with 40 additions and 4 deletions
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20
drivers/net/wireless/ath/wil6210/pm.c
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@@ -300,6 +300,9 @@ int wil_suspend(struct wil6210_priv *wil, bool is_runtime)
wil_dbg_pm(wil, "suspend: %s => %d\n",
is_runtime ? "runtime" : "system", rc);
if (!rc)
wil->suspend_stats.suspend_start_time = ktime_get();
return rc;
}
@@ -309,6 +312,7 @@ int wil_resume(struct wil6210_priv *wil, bool is_runtime)
struct net_device *ndev = wil_to_ndev(wil);
bool keep_radio_on = ndev->flags & IFF_UP &&
wil->keep_radio_on_during_sleep;
unsigned long long suspend_time_usec = 0;
wil_dbg_pm(wil, "resume: %s\n", is_runtime ? "runtime" : "system");
@@ -326,8 +330,20 @@ int wil_resume(struct wil6210_priv *wil, bool is_runtime)
else
rc = wil_resume_radio_off(wil);
if (rc)
goto out;
suspend_time_usec =
ktime_to_us(ktime_sub(ktime_get(),
wil->suspend_stats.suspend_start_time));
wil->suspend_stats.total_suspend_time += suspend_time_usec;
if (suspend_time_usec < wil->suspend_stats.min_suspend_time)
wil->suspend_stats.min_suspend_time = suspend_time_usec;
if (suspend_time_usec > wil->suspend_stats.max_suspend_time)
wil->suspend_stats.max_suspend_time = suspend_time_usec;
out:
wil_dbg_pm(wil, "resume: %s => %d\n",
is_runtime ? "runtime" : "system", rc);
wil_dbg_pm(wil, "resume: %s => %d, suspend time %lld usec\n",
is_runtime ? "runtime" : "system", rc, suspend_time_usec);
return rc;
}