---

yaml --- r: 205222 b: refs/heads/master c: a25909a h: refs/heads/master v: v3
git-mirror · Jun 14, 2010 · eaf7ef9 · eaf7ef9
1 parent c50c127
commit eaf7ef9
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Showing 3 changed files with 20 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 71d1d5c722db9ae3b3f9c08ef7ddcd7759fbb1e0
+refs/heads/master: a25909a4d4a29e272f953e12595bf2f04a292dbd
diff --git a/trunk/include/linux/workqueue.h b/trunk/include/linux/workqueue.h
@@ -297,4 +297,8 @@ static inline long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
 #else
 long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg);
 #endif /* CONFIG_SMP */
+
+#ifdef CONFIG_LOCKDEP
+int in_workqueue_context(struct workqueue_struct *wq);
+#endif
 #endif
diff --git a/trunk/kernel/workqueue.c b/trunk/kernel/workqueue.c
@@ -68,6 +68,21 @@ struct workqueue_struct {
 #endif
 };
 
+#ifdef CONFIG_LOCKDEP
+/**
+ * in_workqueue_context() - in context of specified workqueue?
+ * @wq: the workqueue of interest
+ *
+ * Checks lockdep state to see if the current task is executing from
+ * within a workqueue item.  This function exists only if lockdep is
+ * enabled.
+ */
+int in_workqueue_context(struct workqueue_struct *wq)
+{
+	return lock_is_held(&wq->lockdep_map);
+}
+#endif
+
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
 
 static struct debug_obj_descr work_debug_descr;