#define FREEZER_H_INCLUDED
#include <linux/sched.h>
+#include <linux/wait.h>
#ifdef CONFIG_PM_SLEEP
/*
current->flags &= ~PF_NOFREEZE;
}
+/*
+ * Tell the freezer that the current task should be frozen by it and that it
+ * should send a fake signal to the task to freeze it.
+ */
+static inline void set_freezable_with_signal(void)
+{
+ current->flags &= ~(PF_NOFREEZE | PF_FREEZER_NOSIG);
+}
+
+/*
+ * Freezer-friendly wrappers around wait_event_interruptible() and
+ * wait_event_interruptible_timeout(), originally defined in <linux/wait.h>
+ */
+
+#define wait_event_freezable(wq, condition) \
+({ \
+ int __retval; \
+ do { \
+ __retval = wait_event_interruptible(wq, \
+ (condition) || freezing(current)); \
+ if (__retval && !freezing(current)) \
+ break; \
+ else if (!(condition)) \
+ __retval = -ERESTARTSYS; \
+ } while (try_to_freeze()); \
+ __retval; \
+})
+
+
+#define wait_event_freezable_timeout(wq, condition, timeout) \
+({ \
+ long __retval = timeout; \
+ do { \
+ __retval = wait_event_interruptible_timeout(wq, \
+ (condition) || freezing(current), \
+ __retval); \
+ } while (try_to_freeze()); \
+ __retval; \
+})
#else /* !CONFIG_PM_SLEEP */
static inline int frozen(struct task_struct *p) { return 0; }
static inline int freezing(struct task_struct *p) { return 0; }
static inline void freezer_count(void) {}
static inline int freezer_should_skip(struct task_struct *p) { return 0; }
static inline void set_freezable(void) {}
+static inline void set_freezable_with_signal(void) {}
+
+#define wait_event_freezable(wq, condition) \
+ wait_event_interruptible(wq, condition)
+
+#define wait_event_freezable_timeout(wq, condition, timeout) \
+ wait_event_interruptible_timeout(wq, condition, timeout)
+
#endif /* !CONFIG_PM_SLEEP */
#endif /* FREEZER_H_INCLUDED */