Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

* 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (63 commits)
  PM / Clocks: Remove redundant NULL checks before kfree()
  PM / Documentation: Update docs about suspend and CPU hotplug
  ACPI / PM: Add Sony VGN-FW21E to nonvs blacklist.
  ARM: mach-shmobile: sh7372 A4R support (v4)
  ARM: mach-shmobile: sh7372 A3SP support (v4)
  PM / Sleep: Mark devices involved in wakeup signaling during suspend
  PM / Hibernate: Improve performance of LZO/plain hibernation, checksum image
  PM / Hibernate: Do not initialize static and extern variables to 0
  PM / Freezer: Make fake_signal_wake_up() wake TASK_KILLABLE tasks too
  PM / Hibernate: Add resumedelay kernel param in addition to resumewait
  MAINTAINERS: Update linux-pm list address
  PM / ACPI: Blacklist Vaio VGN-FW520F machine known to require acpi_sleep=nonvs
  PM / ACPI: Blacklist Sony Vaio known to require acpi_sleep=nonvs
  PM / Hibernate: Add resumewait param to support MMC-like devices as resume file
  PM / Hibernate: Fix typo in a kerneldoc comment
  PM / Hibernate: Freeze kernel threads after preallocating memory
  PM: Update the policy on default wakeup settings
  PM / VT: Cleanup #if defined uglyness and fix compile error
  PM / Suspend: Off by one in pm_suspend()
  PM / Hibernate: Include storage keys in hibernation image on s390
  ...

1 files changed, 155 insertions, 0 deletions

diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
new file mode 100644
index 00000000000..83b0ea302a8
--- /dev/null
+++ b/include/linux/pm_qos.h
@@ -0,0 +1,155 @@
+#ifndef _LINUX_PM_QOS_H
+#define _LINUX_PM_QOS_H
+/* interface for the pm_qos_power infrastructure of the linux kernel.
+ *
+ * Mark Gross <mgross@linux.intel.com>
+ */
+#include <linux/plist.h>
+#include <linux/notifier.h>
+#include <linux/miscdevice.h>
+#include <linux/device.h>
+
+#define PM_QOS_RESERVED 0
+#define PM_QOS_CPU_DMA_LATENCY 1
+#define PM_QOS_NETWORK_LATENCY 2
+#define PM_QOS_NETWORK_THROUGHPUT 3
+
+#define PM_QOS_NUM_CLASSES 4
+#define PM_QOS_DEFAULT_VALUE -1
+
+#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
+#define PM_QOS_DEV_LAT_DEFAULT_VALUE		0
+
+struct pm_qos_request {
+	struct plist_node node;
+	int pm_qos_class;
+};
+
+struct dev_pm_qos_request {
+	struct plist_node node;
+	struct device *dev;
+};
+
+enum pm_qos_type {
+	PM_QOS_UNITIALIZED,
+	PM_QOS_MAX,		/* return the largest value */
+	PM_QOS_MIN		/* return the smallest value */
+};
+
+/*
+ * Note: The lockless read path depends on the CPU accessing
+ * target_value atomically.  Atomic access is only guaranteed on all CPU
+ * types linux supports for 32 bit quantites
+ */
+struct pm_qos_constraints {
+	struct plist_head list;
+	s32 target_value;	/* Do not change to 64 bit */
+	s32 default_value;
+	enum pm_qos_type type;
+	struct blocking_notifier_head *notifiers;
+};
+
+/* Action requested to pm_qos_update_target */
+enum pm_qos_req_action {
+	PM_QOS_ADD_REQ,		/* Add a new request */
+	PM_QOS_UPDATE_REQ,	/* Update an existing request */
+	PM_QOS_REMOVE_REQ	/* Remove an existing request */
+};
+
+static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req)
+{
+	return req->dev != 0;
+}
+
+#ifdef CONFIG_PM
+int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node,
+			 enum pm_qos_req_action action, int value);
+void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class,
+			s32 value);
+void pm_qos_update_request(struct pm_qos_request *req,
+			   s32 new_value);
+void pm_qos_remove_request(struct pm_qos_request *req);
+
+int pm_qos_request(int pm_qos_class);
+int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier);
+int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
+int pm_qos_request_active(struct pm_qos_request *req);
+s32 pm_qos_read_value(struct pm_qos_constraints *c);
+
+s32 dev_pm_qos_read_value(struct device *dev);
+int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req,
+			   s32 value);
+int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value);
+int dev_pm_qos_remove_request(struct dev_pm_qos_request *req);
+int dev_pm_qos_add_notifier(struct device *dev,
+			    struct notifier_block *notifier);
+int dev_pm_qos_remove_notifier(struct device *dev,
+			       struct notifier_block *notifier);
+int dev_pm_qos_add_global_notifier(struct notifier_block *notifier);
+int dev_pm_qos_remove_global_notifier(struct notifier_block *notifier);
+void dev_pm_qos_constraints_init(struct device *dev);
+void dev_pm_qos_constraints_destroy(struct device *dev);
+#else
+static inline int pm_qos_update_target(struct pm_qos_constraints *c,
+				       struct plist_node *node,
+				       enum pm_qos_req_action action,
+				       int value)
+			{ return 0; }
+static inline void pm_qos_add_request(struct pm_qos_request *req,
+				      int pm_qos_class, s32 value)
+			{ return; }
+static inline void pm_qos_update_request(struct pm_qos_request *req,
+					 s32 new_value)
+			{ return; }
+static inline void pm_qos_remove_request(struct pm_qos_request *req)
+			{ return; }
+
+static inline int pm_qos_request(int pm_qos_class)
+			{ return 0; }
+static inline int pm_qos_add_notifier(int pm_qos_class,
+				      struct notifier_block *notifier)
+			{ return 0; }
+static inline int pm_qos_remove_notifier(int pm_qos_class,
+					 struct notifier_block *notifier)
+			{ return 0; }
+static inline int pm_qos_request_active(struct pm_qos_request *req)
+			{ return 0; }
+static inline s32 pm_qos_read_value(struct pm_qos_constraints *c)
+			{ return 0; }
+
+static inline s32 dev_pm_qos_read_value(struct device *dev)
+			{ return 0; }
+static inline int dev_pm_qos_add_request(struct device *dev,
+					 struct dev_pm_qos_request *req,
+					 s32 value)
+			{ return 0; }
+static inline int dev_pm_qos_update_request(struct dev_pm_qos_request *req,
+					    s32 new_value)
+			{ return 0; }
+static inline int dev_pm_qos_remove_request(struct dev_pm_qos_request *req)
+			{ return 0; }
+static inline int dev_pm_qos_add_notifier(struct device *dev,
+					  struct notifier_block *notifier)
+			{ return 0; }
+static inline int dev_pm_qos_remove_notifier(struct device *dev,
+					     struct notifier_block *notifier)
+			{ return 0; }
+static inline int dev_pm_qos_add_global_notifier(
+					struct notifier_block *notifier)
+			{ return 0; }
+static inline int dev_pm_qos_remove_global_notifier(
+					struct notifier_block *notifier)
+			{ return 0; }
+static inline void dev_pm_qos_constraints_init(struct device *dev)
+{
+	dev->power.power_state = PMSG_ON;
+}
+static inline void dev_pm_qos_constraints_destroy(struct device *dev)
+{
+	dev->power.power_state = PMSG_INVALID;
+}
+#endif
+
+#endif