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authorZhou Jie <zhoujie2011@cn.fujitsu.com>2016-04-29 13:12:01 +0800
committerKevin Wolf <kwolf@redhat.com>2016-05-12 15:22:08 +0200
commited79f37d9b6f1d3543afe5103bbe9dab43484b66 (patch)
tree4b60625a8d6e408996b8f75325807723ac1b3ef8 /block/sheepdog.c
parent547cb1574e29082aa194ec65c43c8e08ac1f9aa8 (diff)
downloadqemu-ed79f37d9b6f1d3543afe5103bbe9dab43484b66.tar.gz
block: always compile-check debug prints
Files with conditional debug statements should ensure that the printf is always compiled. This prevents bitrot of the format string of the debug statement. And switch debug output to stderr. Signed-off-by: Zhou Jie <zhoujie2011@cn.fujitsu.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/sheepdog.c')
-rw-r--r--block/sheepdog.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/block/sheepdog.c b/block/sheepdog.c
index 33e0a33824..90236865e9 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -294,13 +294,16 @@ static inline size_t count_data_objs(const struct SheepdogInode *inode)
#undef DPRINTF
#ifdef DEBUG_SDOG
-#define DPRINTF(fmt, args...) \
- do { \
- fprintf(stdout, "%s %d: " fmt, __func__, __LINE__, ##args); \
- } while (0)
+#define DEBUG_SDOG_PRINT 1
#else
-#define DPRINTF(fmt, args...)
+#define DEBUG_SDOG_PRINT 0
#endif
+#define DPRINTF(fmt, args...) \
+ do { \
+ if (DEBUG_SDOG_PRINT) { \
+ fprintf(stderr, "%s %d: " fmt, __func__, __LINE__, ##args); \
+ } \
+ } while (0)
typedef struct SheepdogAIOCB SheepdogAIOCB;