These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / base / power / domain_governor.c

diff --git a/kernel/drivers/base/power/domain_governor.c b/kernel/drivers/base/power/domain_governor.c
index 2a4154a..1e937ac 100644 (file)
--- a/kernel/drivers/base/power/domain_governor.c
+++ b/kernel/drivers/base/power/domain_governor.c
@@ -77,13 +77,14 @@ static bool default_stop_ok(struct device *dev)
                                      dev_update_qos_constraint);
 
        if (constraint_ns > 0) {
-               constraint_ns -= td->start_latency_ns;
+               constraint_ns -= td->suspend_latency_ns +
+                               td->resume_latency_ns;
                if (constraint_ns == 0)
                        return false;
        }
        td->effective_constraint_ns = constraint_ns;
-       td->cached_stop_ok = constraint_ns > td->stop_latency_ns ||
-                               constraint_ns == 0;
+       td->cached_stop_ok = constraint_ns >= 0;
+
        /*
         * The children have been suspended already, so we don't need to take
         * their stop latencies into account here.
@@ -126,18 +127,6 @@ static bool default_power_down_ok(struct dev_pm_domain *pd)
 
        off_on_time_ns = genpd->power_off_latency_ns +
                                genpd->power_on_latency_ns;
-       /*
-        * It doesn't make sense to remove power from the domain if saving
-        * the state of all devices in it and the power off/power on operations
-        * take too much time.
-        *
-        * All devices in this domain have been stopped already at this point.
-        */
-       list_for_each_entry(pdd, &genpd->dev_list, list_node) {
-               if (pdd->dev->driver)
-                       off_on_time_ns +=
-                               to_gpd_data(pdd)->td.save_state_latency_ns;
-       }
 
        min_off_time_ns = -1;
        /*
@@ -171,9 +160,6 @@ static bool default_power_down_ok(struct dev_pm_domain *pd)
                struct gpd_timing_data *td;
                s64 constraint_ns;
 
-               if (!pdd->dev->driver)
-                       continue;
-
                /*
                 * Check if the device is allowed to be off long enough for the
                 * domain to turn off and on (that's how much time it will
@@ -193,7 +179,6 @@ static bool default_power_down_ok(struct dev_pm_domain *pd)
                 * constraint_ns cannot be negative here, because the device has
                 * been suspended.
                 */
-               constraint_ns -= td->restore_state_latency_ns;
                if (constraint_ns <= off_on_time_ns)
                        return false;