Merge branch 'linus' into cont_syslog

[safe/jmp/linux-2.6] / include / linux / slow-work.h

diff --git a/include/linux/slow-work.h b/include/linux/slow-work.h
index f414851..13337bf 100644 (file)
--- a/include/linux/slow-work.h
+++ b/include/linux/slow-work.h
@@ -20,7 +20,7 @@
 #include <linux/timer.h>
 
 struct slow_work;
-#ifdef CONFIG_SLOW_WORK_PROC
+#ifdef CONFIG_SLOW_WORK_DEBUG
 struct seq_file;
 #endif
 
@@ -42,8 +42,8 @@ struct slow_work_ops {
        /* execute a work item */
        void (*execute)(struct slow_work *work);
 
-#ifdef CONFIG_SLOW_WORK_PROC
-       /* describe a work item for /proc */
+#ifdef CONFIG_SLOW_WORK_DEBUG
+       /* describe a work item for debugfs */
        void (*desc)(struct slow_work *work, struct seq_file *m);
 #endif
 };
@@ -64,7 +64,7 @@ struct slow_work {
 #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 */
-#ifdef CONFIG_SLOW_WORK_PROC
+#ifdef CONFIG_SLOW_WORK_DEBUG
        struct timespec         mark;   /* jiffies at which queued or exec begun */
 #endif
 };
@@ -120,6 +120,25 @@ static inline void vslow_work_init(struct slow_work *work,
        INIT_LIST_HEAD(&work->link);
 }
 
+/**
+ * slow_work_is_queued - Determine if a slow work item is on the work queue
+ * work: The work item to test
+ *
+ * Determine if the specified slow-work item is on the work queue.  This
+ * returns true if it is actually on the queue.
+ *
+ * If the item is executing and has been marked for requeue when execution
+ * finishes, then false will be returned.
+ *
+ * Anyone wishing to wait for completion of execution can wait on the
+ * SLOW_WORK_EXECUTING bit.
+ */
+static inline bool slow_work_is_queued(struct slow_work *work)
+{
+       unsigned long flags = work->flags;
+       return flags & SLOW_WORK_PENDING && !(flags & SLOW_WORK_EXECUTING);
+}
+
 extern int slow_work_enqueue(struct slow_work *work);
 extern void slow_work_cancel(struct slow_work *work);
 extern int slow_work_register_user(struct module *owner);
@@ -133,6 +152,9 @@ static inline void delayed_slow_work_cancel(struct delayed_slow_work *dwork)
        slow_work_cancel(&dwork->work);
 }
 
+extern bool slow_work_sleep_till_thread_needed(struct slow_work *work,
+                                              signed long *_timeout);
+
 #ifdef CONFIG_SYSCTL
 extern ctl_table slow_work_sysctls[];
 #endif