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-rw-r--r--include/linux/blkdev.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f3fff8bf85e..d483c494672 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1209,9 +1209,27 @@ static inline void set_io_start_time_ns(struct request *req)
{
req->io_start_time_ns = sched_clock();
}
+
+static inline uint64_t rq_start_time_ns(struct request *req)
+{
+ return req->start_time_ns;
+}
+
+static inline uint64_t rq_io_start_time_ns(struct request *req)
+{
+ return req->io_start_time_ns;
+}
#else
static inline void set_start_time_ns(struct request *req) {}
static inline void set_io_start_time_ns(struct request *req) {}
+static inline uint64_t rq_start_time_ns(struct request *req)
+{
+ return 0;
+}
+static inline uint64_t rq_io_start_time_ns(struct request *req)
+{
+ return 0;
+}
#endif
#define MODULE_ALIAS_BLOCKDEV(major,minor) \