Sometimes, we want to initialize completions with sparate lockdep maps
to assign lock classes under control. For example, the workqueue code
manages lockdep maps, as it can classify lockdep maps properly.
Provided a function for that purpose.
Signed-off-by: Byungchul Park <byungchul.park@xxxxxxx>
---
include/linux/completion.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/completion.h b/include/linux/completion.h
index cae5400..182d56e 100644
--- a/include/linux/completion.h
+++ b/include/linux/completion.h
@@ -49,6 +49,13 @@ static inline void complete_release_commit(struct completion *x)
lock_commit_crosslock((struct lockdep_map *)&x->map);
}
+#define init_completion_with_map(x, m) \
+do { \
+ lockdep_init_map_crosslock((struct lockdep_map *)&(x)->map, \
+ (m)->name, (m)->key, 0); \
+ __init_completion(x); \
+} while (0)
+
#define init_completion(x) \
do { \
static struct lock_class_key __key; \
@@ -58,6 +65,7 @@ static inline void complete_release_commit(struct completion *x)
__init_completion(x); \
} while (0)
#else
+#define init_completion_with_map(x, m) __init_completion(x)
#define init_completion(x) __init_completion(x)
static inline void complete_acquire(struct completion *x) {}
static inline void complete_release(struct completion *x) {}
--
1.9.1
