linux/drivers/base/power
Ulf Hansson a98f1b78ec PM / Domains: Fix validation of latency constraints in genpd governor
Commit ba2bbfbf63 (PM / Domains: Remove intermediate states from the
power off sequence) changed the power off sequence in genpd. That also
required some updates regarding the validation of latency constraints in
the genpd governor. Unfortunate that wasn't covered, so let's fix this.

From a runtime PM and latency point of view, we need to consider the worst
case scenario while validating latency constraints. That's typically when
a call to pm_runtime_get_sync() needs to wait for a ongoing runtime
suspend operation to be carried out, as it then also needs to wait for the
device to be runtime resumed again.

The above mentioned commit made the genpd governor's ->stop_ok() callback
responsible of validating genpd's device's runtime suspend/resume latency.
In other words, the constraint needs to be validated towards the relevant
latencies present in genpd's ->runtime_suspend|resume() callbacks.

Earlier, that included latencies from the ->stop|start() callbacks, but as
->save|restore_state() are now also being invoked from genpd's
->runtime_suspend|resume() and to comply with the worst case scenario,
let's take also those latencies into account.

Fixes: ba2bbfbf63 (PM / Domains: Remove intermediate states from the power off sequence)
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-14 02:34:43 +02:00
..
Makefile PM / Wakeirq: Add automated device wake IRQ handling 2015-05-20 01:56:31 +02:00
clock_ops.c PM / clk: don't return int on __pm_clk_enable() 2015-07-17 22:58:13 +02:00
common.c PM: Convert dev_pm_put_subsys_data() into a void function 2015-02-03 22:59:25 +01:00
domain.c PM / Domains: Ensure subdomain is not in use before removing 2015-09-05 03:33:19 +02:00
domain_governor.c PM / Domains: Fix validation of latency constraints in genpd governor 2015-10-14 02:34:43 +02:00
generic_ops.c PM / Runtime: Spelling s/competing/completing/ 2014-03-26 16:33:53 +01:00
main.c PM / sleep: Allow devices without runtime PM to do direct-complete 2015-07-21 23:14:22 +02:00
opp.c PM / OPP: Fix typo modifcation -> modification 2015-09-25 23:09:57 +02:00
power.h PM / QoS: Make it possible to expose device latency tolerance to userspace 2015-07-28 08:50:41 +01:00
qos.c PM / QoS: Make it possible to expose device latency tolerance to userspace 2015-07-28 08:50:41 +01:00
runtime.c PM / Wakeirq: Add automated device wake IRQ handling 2015-05-20 01:56:31 +02:00
sysfs.c PM / QoS: Make it possible to expose device latency tolerance to userspace 2015-07-28 08:50:41 +01:00
trace.c PM / sleep: add pm-trace support for suspending phase 2015-03-18 15:54:27 +01:00
wakeirq.c PM / wakeirq: Avoid setting power.wakeirq too hastily 2015-07-07 13:08:39 +02:00
wakeup.c Merge branch 'pm-wakeirq' 2015-07-07 22:47:43 +02:00