PM / Domains: Make it possible to assign names to generic PM domains
Add a name member pointer to struct generic_pm_domain and use it in
diagnostic messages regarding the domain power-off and power-on
latencies. Update the ARM shmobile SH7372 code to assign names to
the PM domains used by it.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 5a8d67d..ad6ba2e 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -209,8 +209,13 @@
goto err;
elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
- if (elapsed_ns > genpd->power_on_latency_ns)
+ if (elapsed_ns > genpd->power_on_latency_ns) {
genpd->power_on_latency_ns = elapsed_ns;
+ if (genpd->name)
+ pr_warning("%s: Power-on latency exceeded, "
+ "new value %lld ns\n", genpd->name,
+ elapsed_ns);
+ }
}
genpd_set_active(genpd);
@@ -428,8 +433,13 @@
}
elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
- if (elapsed_ns > genpd->power_off_latency_ns)
+ if (elapsed_ns > genpd->power_off_latency_ns) {
genpd->power_off_latency_ns = elapsed_ns;
+ if (genpd->name)
+ pr_warning("%s: Power-off latency exceeded, "
+ "new value %lld ns\n", genpd->name,
+ elapsed_ns);
+ }
}
genpd->status = GPD_STATE_POWER_OFF;