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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-11 03:35:29 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-11 03:35:29 +0400
commit327adaedf2218b0e318eb393aa79cf2be64c199f (patch)
tree957c1e005c256e6c201054328f9ea000428b00c5 /kernel/power/qos.c
parentb02f6695f7601c4f8442b9cf4636802e7fa8d550 (diff)
downloadlinux-327adaedf2218b0e318eb393aa79cf2be64c199f.tar.xz
PM / QoS: Add no_constraints_value field to struct pm_qos_constraints
Add a new field, no_constraints_value, to struct pm_qos_constraints representing a list of PM QoS constraint requests to be returned by pm_qos_get_value() when that list of requests is empty. That field will be equal to default_value for all of the existing global PM QoS classes and for the resume latency device PM QoS type, but it will be different from default_value for the new latency tolerance device PM QoS type introduced by the next changeset. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/qos.c')
-rw-r--r--kernel/power/qos.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 8dff9b48075a..e23ae38e647f 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -66,6 +66,7 @@ static struct pm_qos_constraints cpu_dma_constraints = {
.list = PLIST_HEAD_INIT(cpu_dma_constraints.list),
.target_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
.default_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
+ .no_constraint_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
.type = PM_QOS_MIN,
.notifiers = &cpu_dma_lat_notifier,
};
@@ -79,6 +80,7 @@ static struct pm_qos_constraints network_lat_constraints = {
.list = PLIST_HEAD_INIT(network_lat_constraints.list),
.target_value = PM_QOS_NETWORK_LAT_DEFAULT_VALUE,
.default_value = PM_QOS_NETWORK_LAT_DEFAULT_VALUE,
+ .no_constraint_value = PM_QOS_NETWORK_LAT_DEFAULT_VALUE,
.type = PM_QOS_MIN,
.notifiers = &network_lat_notifier,
};
@@ -93,6 +95,7 @@ static struct pm_qos_constraints network_tput_constraints = {
.list = PLIST_HEAD_INIT(network_tput_constraints.list),
.target_value = PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE,
.default_value = PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE,
+ .no_constraint_value = PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE,
.type = PM_QOS_MAX,
.notifiers = &network_throughput_notifier,
};
@@ -128,7 +131,7 @@ static const struct file_operations pm_qos_power_fops = {
static inline int pm_qos_get_value(struct pm_qos_constraints *c)
{
if (plist_head_empty(&c->list))
- return c->default_value;
+ return c->no_constraint_value;
switch (c->type) {
case PM_QOS_MIN: