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Merge branch 'pm-qos'

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* pm-qos:
  PM / QoS: Add PM_QOS_MEMORY_BANDWIDTH class
This commit is contained in:
Rafael J. Wysocki
2014-10-23 23:02:36 +02:00
parent 286180d8d3 7990da71eb
commit 37c72cac0e
3 changed files with 33 additions and 3 deletions
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27
kernel/power/qos.c
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@@ -105,11 +105,27 @@ static struct pm_qos_object network_throughput_pm_qos = {
};
static BLOCKING_NOTIFIER_HEAD(memory_bandwidth_notifier);
static struct pm_qos_constraints memory_bw_constraints = {
.list = PLIST_HEAD_INIT(memory_bw_constraints.list),
.target_value = PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE,
.default_value = PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE,
.no_constraint_value = PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE,
.type = PM_QOS_SUM,
.notifiers = &memory_bandwidth_notifier,
};
static struct pm_qos_object memory_bandwidth_pm_qos = {
.constraints = &memory_bw_constraints,
.name = "memory_bandwidth",
};
static struct pm_qos_object *pm_qos_array[] = {
&null_pm_qos,
&cpu_dma_pm_qos,
&network_lat_pm_qos,
&network_throughput_pm_qos
&network_throughput_pm_qos,
&memory_bandwidth_pm_qos,
};
static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
@@ -130,6 +146,9 @@ static const struct file_operations pm_qos_power_fops = {
/* unlocked internal variant */
static inline int pm_qos_get_value(struct pm_qos_constraints *c)
{
struct plist_node *node;
int total_value = 0;
if (plist_head_empty(&c->list))
return c->no_constraint_value;
@@ -140,6 +159,12 @@ static inline int pm_qos_get_value(struct pm_qos_constraints *c)
case PM_QOS_MAX:
return plist_last(&c->list)->prio;
case PM_QOS_SUM:
plist_for_each(node, &c->list)
total_value += node->prio;
return total_value;
default:
/* runtime check for not using enum */
BUG();