Add maximum CPU frequency as PM QoS parameter.
Signed-off-by: Antti P Miettinen <amiettinen@xxxxxxxxxx>
---
include/linux/pm_qos.h | 2 ++
kernel/power/qos.c | 15 +++++++++++++++
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index 54a0d00..7b8d08b 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -15,6 +15,7 @@ enum {
PM_QOS_NETWORK_LATENCY,
PM_QOS_NETWORK_THROUGHPUT,
PM_QOS_CPU_FREQ_MIN,
+ PM_QOS_CPU_FREQ_MAX,
/* insert new class ID */
@@ -28,6 +29,7 @@ enum {
#define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0
#define PM_QOS_DEV_LAT_DEFAULT_VALUE 0
#define PM_QOS_CPU_FREQ_MIN_DEFAULT_VALUE 0
+#define PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE LONG_MAX
struct pm_qos_request {
struct plist_node node;
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 07d761a..04b744b 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -115,12 +115,27 @@ static struct pm_qos_object cpu_freq_min_pm_qos = {
};
+static BLOCKING_NOTIFIER_HEAD(cpu_freq_max_notifier);
+static struct pm_qos_constraints cpu_freq_max_constraints = {
+ .list = PLIST_HEAD_INIT(cpu_freq_max_constraints.list),
+ .target_value = PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE,
+ .default_value = PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE,
+ .type = PM_QOS_MIN,
+ .notifiers = &cpu_freq_max_notifier,
+};
+static struct pm_qos_object cpu_freq_max_pm_qos = {
+ .constraints = &cpu_freq_max_constraints,
+ .name = "cpu_freq_max",
+};
+
+
static struct pm_qos_object *pm_qos_array[] = {
&null_pm_qos,
&cpu_dma_pm_qos,
&network_lat_pm_qos,
&network_throughput_pm_qos,
&cpu_freq_min_pm_qos,
+ &cpu_freq_max_pm_qos,
};
static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
--
1.7.4.1
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