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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 11:14:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 11:14:36 -0700
commitf46e9913faeebcb6bd29edf795f12b60acbff171 (patch)
tree1ed8871d0ebd638094d27317de1d8a53712ae15a /include
parent8d91530c5fd7f0b1e8c4ddfea2905e55a178569b (diff)
parent8d4b9d1bfef117862a2889dec4dac227068544c9 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / Runtime: Add runtime PM statistics (v3) PM / Runtime: Make runtime_status attribute not debug-only (v. 2) PM: Do not use dynamically allocated objects in pm_wakeup_event() PM / Suspend: Fix ordering of calls in suspend error paths PM / Hibernate: Fix snapshot error code path PM / Hibernate: Fix hibernation_platform_enter() pm_qos: Get rid of the allocation in pm_qos_add_request() pm_qos: Reimplement using plists plist: Add plist_last PM: Make it possible to avoid races between wakeup and system sleep PNPACPI: Add support for remote wakeup PM: describe kernel policy regarding wakeup defaults (v. 2) PM / Hibernate: Fix typos in comments in kernel/power/swap.c
Diffstat (limited to 'include')
-rw-r--r--include/linux/netdevice.h2
-rw-r--r--include/linux/plist.h29
-rw-r--r--include/linux/pm.h16
-rw-r--r--include/linux/pm_qos_params.h13
-rw-r--r--include/linux/pm_wakeup.h10
-rw-r--r--include/linux/pnp.h1
-rw-r--r--include/linux/suspend.h17
-rw-r--r--include/sound/pcm.h2
8 files changed, 78 insertions, 12 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b21e4054c12c..2f22119b4b08 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -779,7 +779,7 @@ struct net_device {
*/
char name[IFNAMSIZ];
- struct pm_qos_request_list *pm_qos_req;
+ struct pm_qos_request_list pm_qos_req;
/* device name hash chain */
struct hlist_node name_hlist;
diff --git a/include/linux/plist.h b/include/linux/plist.h
index 6898985e7b38..7254eda078e5 100644
--- a/include/linux/plist.h
+++ b/include/linux/plist.h
@@ -260,6 +260,23 @@ static inline int plist_node_empty(const struct plist_node *node)
#endif
/**
+ * plist_last_entry - get the struct for the last entry
+ * @head: the &struct plist_head pointer
+ * @type: the type of the struct this is embedded in
+ * @member: the name of the list_struct within the struct
+ */
+#ifdef CONFIG_DEBUG_PI_LIST
+# define plist_last_entry(head, type, member) \
+({ \
+ WARN_ON(plist_head_empty(head)); \
+ container_of(plist_last(head), type, member); \
+})
+#else
+# define plist_last_entry(head, type, member) \
+ container_of(plist_last(head), type, member)
+#endif
+
+/**
* plist_first - return the first node (and thus, highest priority)
* @head: the &struct plist_head pointer
*
@@ -271,4 +288,16 @@ static inline struct plist_node *plist_first(const struct plist_head *head)
struct plist_node, plist.node_list);
}
+/**
+ * plist_last - return the last node (and thus, lowest priority)
+ * @head: the &struct plist_head pointer
+ *
+ * Assumes the plist is _not_ empty.
+ */
+static inline struct plist_node *plist_last(const struct plist_head *head)
+{
+ return list_entry(head->node_list.prev,
+ struct plist_node, plist.node_list);
+}
+
#endif
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 8e258c727971..52e8c55ff314 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -457,6 +457,7 @@ struct dev_pm_info {
#ifdef CONFIG_PM_SLEEP
struct list_head entry;
struct completion completion;
+ unsigned long wakeup_count;
#endif
#ifdef CONFIG_PM_RUNTIME
struct timer_list suspend_timer;
@@ -476,9 +477,15 @@ struct dev_pm_info {
enum rpm_request request;
enum rpm_status runtime_status;
int runtime_error;
+ unsigned long active_jiffies;
+ unsigned long suspended_jiffies;
+ unsigned long accounting_timestamp;
#endif
};
+extern void update_pm_runtime_accounting(struct device *dev);
+
+
/*
* The PM_EVENT_ messages are also used by drivers implementing the legacy
* suspend framework, based on the ->suspend() and ->resume() callbacks common
@@ -552,6 +559,11 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
} while (0)
extern void device_pm_wait_for_dev(struct device *sub, struct device *dev);
+
+/* drivers/base/power/wakeup.c */
+extern void pm_wakeup_event(struct device *dev, unsigned int msec);
+extern void pm_stay_awake(struct device *dev);
+extern void pm_relax(void);
#else /* !CONFIG_PM_SLEEP */
#define device_pm_lock() do {} while (0)
@@ -565,6 +577,10 @@ static inline int dpm_suspend_start(pm_message_t state)
#define suspend_report_result(fn, ret) do {} while (0)
static inline void device_pm_wait_for_dev(struct device *a, struct device *b) {}
+
+static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {}
+static inline void pm_stay_awake(struct device *dev) {}
+static inline void pm_relax(void) {}
#endif /* !CONFIG_PM_SLEEP */
/* How to reorder dpm_list after device_move() */
diff --git a/include/linux/pm_qos_params.h b/include/linux/pm_qos_params.h
index 8ba440e5eb7f..77cbddb3784c 100644
--- a/include/linux/pm_qos_params.h
+++ b/include/linux/pm_qos_params.h
@@ -1,8 +1,10 @@
+#ifndef _LINUX_PM_QOS_PARAMS_H
+#define _LINUX_PM_QOS_PARAMS_H
/* interface for the pm_qos_power infrastructure of the linux kernel.
*
* Mark Gross <mgross@linux.intel.com>
*/
-#include <linux/list.h>
+#include <linux/plist.h>
#include <linux/notifier.h>
#include <linux/miscdevice.h>
@@ -14,9 +16,12 @@
#define PM_QOS_NUM_CLASSES 4
#define PM_QOS_DEFAULT_VALUE -1
-struct pm_qos_request_list;
+struct pm_qos_request_list {
+ struct plist_node list;
+ int pm_qos_class;
+};
-struct pm_qos_request_list *pm_qos_add_request(int pm_qos_class, s32 value);
+void pm_qos_add_request(struct pm_qos_request_list *l, int pm_qos_class, s32 value);
void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
s32 new_value);
void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
@@ -24,4 +29,6 @@ void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_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_list *req);
+#endif
diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h
index 22d64c18056c..76aca48722ae 100644
--- a/include/linux/pm_wakeup.h
+++ b/include/linux/pm_wakeup.h
@@ -29,8 +29,11 @@
#ifdef CONFIG_PM
-/* changes to device_may_wakeup take effect on the next pm state change.
- * by default, devices should wakeup if they can.
+/* Changes to device_may_wakeup take effect on the next pm state change.
+ *
+ * By default, most devices should leave wakeup disabled. The exceptions
+ * are devices that everyone expects to be wakeup sources: keyboards,
+ * power buttons, possibly network interfaces, etc.
*/
static inline void device_init_wakeup(struct device *dev, bool val)
{
@@ -59,7 +62,7 @@ static inline bool device_may_wakeup(struct device *dev)
#else /* !CONFIG_PM */
-/* For some reason the next two routines work even without CONFIG_PM */
+/* For some reason the following routines work even without CONFIG_PM */
static inline void device_init_wakeup(struct device *dev, bool val)
{
dev->power.can_wakeup = val;
@@ -67,6 +70,7 @@ static inline void device_init_wakeup(struct device *dev, bool val)
static inline void device_set_wakeup_capable(struct device *dev, bool capable)
{
+ dev->power.can_wakeup = capable;
}
static inline bool device_can_wakeup(struct device *dev)
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 7c4193eb0072..1bc1338b817b 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -414,6 +414,7 @@ struct pnp_protocol {
int (*disable) (struct pnp_dev *dev);
/* protocol specific suspend/resume */
+ bool (*can_wakeup) (struct pnp_dev *dev);
int (*suspend) (struct pnp_dev * dev, pm_message_t state);
int (*resume) (struct pnp_dev * dev);
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index bc7d6bb4cd8e..4af270ec2204 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -61,14 +61,15 @@ typedef int __bitwise suspend_state_t;
* before device drivers' late suspend callbacks are executed. It returns
* 0 on success or a negative error code otherwise, in which case the
* system cannot enter the desired sleep state (@prepare_late(), @enter(),
- * @wake(), and @finish() will not be called in that case).
+ * and @wake() will not be called in that case).
*
* @prepare_late: Finish preparing the platform for entering the system sleep
* state indicated by @begin().
* @prepare_late is called before disabling nonboot CPUs and after
* device drivers' late suspend callbacks have been executed. It returns
* 0 on success or a negative error code otherwise, in which case the
- * system cannot enter the desired sleep state (@enter() and @wake()).
+ * system cannot enter the desired sleep state (@enter() will not be
+ * executed).
*
* @enter: Enter the system sleep state indicated by @begin() or represented by
* the argument if @begin() is not implemented.
@@ -81,14 +82,15 @@ typedef int __bitwise suspend_state_t;
* resume callbacks are executed.
* This callback is optional, but should be implemented by the platforms
* that implement @prepare_late(). If implemented, it is always called
- * after @enter(), even if @enter() fails.
+ * after @prepare_late and @enter(), even if one of them fails.
*
* @finish: Finish wake-up of the platform.
* @finish is called right prior to calling device drivers' regular suspend
* callbacks.
* This callback is optional, but should be implemented by the platforms
* that implement @prepare(). If implemented, it is always called after
- * @enter() and @wake(), if implemented, even if any of them fails.
+ * @enter() and @wake(), even if any of them fails. It is executed after
+ * a failing @prepare.
*
* @end: Called by the PM core right after resuming devices, to indicate to
* the platform that the system has returned to the working state or
@@ -286,6 +288,13 @@ extern int unregister_pm_notifier(struct notifier_block *nb);
{ .notifier_call = fn, .priority = pri }; \
register_pm_notifier(&fn##_nb); \
}
+
+/* drivers/base/power/wakeup.c */
+extern bool events_check_enabled;
+
+extern bool pm_check_wakeup_events(void);
+extern bool pm_get_wakeup_count(unsigned long *count);
+extern bool pm_save_wakeup_count(unsigned long count);
#else /* !CONFIG_PM_SLEEP */
static inline int register_pm_notifier(struct notifier_block *nb)
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index dd76cdede64d..6e3a29732dc4 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -366,7 +366,7 @@ struct snd_pcm_substream {
int number;
char name[32]; /* substream name */
int stream; /* stream (direction) */
- struct pm_qos_request_list *latency_pm_qos_req; /* pm_qos request */
+ struct pm_qos_request_list latency_pm_qos_req; /* pm_qos request */
size_t buffer_bytes_max; /* limit ring buffer size */
struct snd_dma_buffer dma_buffer;
unsigned int dma_buf_id;