---

yaml
---
r: 206213
b: refs/heads/master
c: 73f53c4
h: refs/heads/master
i:
  206211: c8df028
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0f900049cbe2767d47c2a62b54f0e822e1d66840
+refs/heads/master: 73f53c4aa732eced5fcb1844d3d452c30905f20f

trunk/include/linux/workqueue.h

@@ -26,18 +26,35 @@ enum {
 	WORK_STRUCT_PENDING_BIT	= 0,	/* work item is pending execution */
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
 	WORK_STRUCT_STATIC_BIT	= 1,	/* static initializer (debugobjects) */
-	WORK_STRUCT_FLAG_BITS	= 2,
+	WORK_STRUCT_COLOR_SHIFT	= 3,	/* color for workqueue flushing */
 #else
-	WORK_STRUCT_FLAG_BITS	= 1,
+	WORK_STRUCT_COLOR_SHIFT	= 2,	/* color for workqueue flushing */
 #endif
 
+	WORK_STRUCT_COLOR_BITS	= 4,
+
 	WORK_STRUCT_PENDING	= 1 << WORK_STRUCT_PENDING_BIT,
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
 	WORK_STRUCT_STATIC	= 1 << WORK_STRUCT_STATIC_BIT,
 #else
 	WORK_STRUCT_STATIC	= 0,
 #endif
 
+	/*
+	 * The last color is no color used for works which don't
+	 * participate in workqueue flushing.
+	 */
+	WORK_NR_COLORS		= (1 << WORK_STRUCT_COLOR_BITS) - 1,
+	WORK_NO_COLOR		= WORK_NR_COLORS,
+
+	/*
+	 * Reserve 6 bits off of cwq pointer w/ debugobjects turned
+	 * off.  This makes cwqs aligned to 64 bytes which isn't too
+	 * excessive while allowing 15 workqueue flush colors.
+	 */
+	WORK_STRUCT_FLAG_BITS	= WORK_STRUCT_COLOR_SHIFT +
+				  WORK_STRUCT_COLOR_BITS,
+
 	WORK_STRUCT_FLAG_MASK	= (1UL << WORK_STRUCT_FLAG_BITS) - 1,
 	WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK,
 };