[PATCH v19 07/40] dept: distinguish each work from another

Workqueue already provides concurrency control.  By that, any wait in a
work doesn't prevents events in other works with the control enabled.
Thus, each work would better be considered a different context.

So let dept assign a different context id to each work.

Signed-off-by: Byungchul Park <[email protected]>
---
 kernel/workqueue.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c6ea96d5b716..4a4075d0697c 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -55,6 +55,7 @@
 #include <linux/kvm_para.h>
 #include <linux/delay.h>
 #include <linux/irq_work.h>
+#include <linux/dept.h>
 
 #include "workqueue_internal.h"
 
@@ -3204,6 +3205,8 @@ __acquires(&pool->lock)
 
 	lockdep_copy_map(&lockdep_map, &work->lockdep_map);
 #endif
+	dept_update_cxt();
+
 	/* ensure we're on the correct CPU */
 	WARN_ON_ONCE(!(pool->flags & POOL_DISASSOCIATED) &&
 		     raw_smp_processor_id() != pool->cpu);
-- 
2.17.1