SLOW_WORK: Add delayed_slow_work support

[deliverable/linux.git] / include / linux / slow-work.h

diff --git a/include/linux/slow-work.h b/include/linux/slow-work.h
index eef20182d5b438749aca25e5f6133b0008fec7ef..b245b9a9cc0bbdd6cdb3e74e6da90e009f6c515a 100644 (file)
--- a/include/linux/slow-work.h
+++ b/include/linux/slow-work.h
@@ -17,6 +17,7 @@
 #ifdef CONFIG_SLOW_WORK
 
 #include <linux/sysctl.h>
+#include <linux/timer.h>
 
 struct slow_work;
 
@@ -52,10 +53,16 @@ struct slow_work {
 #define SLOW_WORK_ENQ_DEFERRED 2       /* item enqueue deferred */
 #define SLOW_WORK_VERY_SLOW    3       /* item is very slow */
 #define SLOW_WORK_CANCELLING   4       /* item is being cancelled, don't enqueue */
+#define SLOW_WORK_DELAYED      5       /* item is struct delayed_slow_work with active timer */
        const struct slow_work_ops *ops; /* operations table for this item */
        struct list_head        link;   /* link in queue */
 };
 
+struct delayed_slow_work {
+       struct slow_work        work;
+       struct timer_list       timer;
+};
+
 /**
  * slow_work_init - Initialise a slow work item
  * @work: The work item to initialise
@@ -71,6 +78,20 @@ static inline void slow_work_init(struct slow_work *work,
        INIT_LIST_HEAD(&work->link);
 }
 
+/**
+ * slow_work_init - Initialise a delayed slow work item
+ * @work: The work item to initialise
+ * @ops: The operations to use to handle the slow work item
+ *
+ * Initialise a delayed slow work item.
+ */
+static inline void delayed_slow_work_init(struct delayed_slow_work *dwork,
+                                         const struct slow_work_ops *ops)
+{
+       init_timer(&dwork->timer);
+       slow_work_init(&dwork->work, ops);
+}
+
 /**
  * vslow_work_init - Initialise a very slow work item
  * @work: The work item to initialise
@@ -93,6 +114,14 @@ extern void slow_work_cancel(struct slow_work *work);
 extern int slow_work_register_user(struct module *owner);
 extern void slow_work_unregister_user(struct module *owner);
 
+extern int delayed_slow_work_enqueue(struct delayed_slow_work *dwork,
+                                    unsigned long delay);
+
+static inline void delayed_slow_work_cancel(struct delayed_slow_work *dwork)
+{
+       slow_work_cancel(&dwork->work);
+}
+
 #ifdef CONFIG_SYSCTL
 extern ctl_table slow_work_sysctls[];
 #endif