From: Huang, Tao <huangtao@rock-chips.com>
Date: Mon, 18 May 2015 09:08:55 +0000 (+0800)
Subject: cpuquiet: PM QoS: Add max/min online cpus as PM QoS parameter
X-Git-Tag: firefly_0821_release~4158^2~17
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e615617818feacd99e35995832b32df49e214b6c;p=firefly-linux-kernel-4.4.55.git

cpuquiet: PM QoS: Add max/min online cpus as PM QoS parameter

Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
---

diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index 5a95013905c8..7030558e8375 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -15,6 +15,10 @@ enum {
 	PM_QOS_CPU_DMA_LATENCY,
 	PM_QOS_NETWORK_LATENCY,
 	PM_QOS_NETWORK_THROUGHPUT,
+#ifdef CONFIG_CPUQUIET_FRAMEWORK
+	PM_QOS_MIN_ONLINE_CPUS,
+	PM_QOS_MAX_ONLINE_CPUS,
+#endif
 
 	/* insert new class ID */
 	PM_QOS_NUM_CLASSES,
@@ -32,6 +36,10 @@ enum pm_qos_flags_status {
 #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE	(2000 * USEC_PER_SEC)
 #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE	(2000 * USEC_PER_SEC)
 #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE	0
+#ifdef CONFIG_CPUQUIET_FRAMEWORK
+#define PM_QOS_MIN_ONLINE_CPUS_DEFAULT_VALUE	0
+#define PM_QOS_MAX_ONLINE_CPUS_DEFAULT_VALUE	INT_MAX
+#endif
 #define PM_QOS_DEV_LAT_DEFAULT_VALUE		0
 
 #define PM_QOS_FLAG_NO_POWER_OFF	(1 << 0)
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 8703fc729fb4..0565679b574b 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -100,12 +100,43 @@ static struct pm_qos_object network_throughput_pm_qos = {
 	.name = "network_throughput",
 };
 
+#ifdef CONFIG_CPUQUIET_FRAMEWORK
+static BLOCKING_NOTIFIER_HEAD(min_online_cpus_notifier);
+static struct pm_qos_constraints min_online_cpus_constraints = {
+	.list = PLIST_HEAD_INIT(min_online_cpus_constraints.list),
+	.target_value = PM_QOS_MIN_ONLINE_CPUS_DEFAULT_VALUE,
+	.default_value = PM_QOS_MIN_ONLINE_CPUS_DEFAULT_VALUE,
+	.type = PM_QOS_MAX,
+	.notifiers = &min_online_cpus_notifier,
+};
+static struct pm_qos_object min_online_cpus_pm_qos = {
+	.constraints = &min_online_cpus_constraints,
+	.name = "min_online_cpus",
+};
+
+static BLOCKING_NOTIFIER_HEAD(max_online_cpus_notifier);
+static struct pm_qos_constraints max_online_cpus_constraints = {
+	.list = PLIST_HEAD_INIT(max_online_cpus_constraints.list),
+	.target_value = PM_QOS_MAX_ONLINE_CPUS_DEFAULT_VALUE,
+	.default_value = PM_QOS_MAX_ONLINE_CPUS_DEFAULT_VALUE,
+	.type = PM_QOS_MIN,
+	.notifiers = &max_online_cpus_notifier,
+};
+static struct pm_qos_object max_online_cpus_pm_qos = {
+	.constraints = &max_online_cpus_constraints,
+	.name = "max_online_cpus",
+};
+#endif
 
 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,
+#ifdef CONFIG_CPUQUIET_FRAMEWORK
+	&min_online_cpus_pm_qos,
+	&max_online_cpus_pm_qos,
+#endif
 };
 
 static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,