blk-mq: add blktrace insert event trace

We need it to make 'btt' from blktrace happy, otherwise
we are missing one state transition.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 2 insertions, 0 deletions

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 32593dba4684..cdc629cf075b 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -721,6 +721,8 @@ static void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx,
 {
         struct blk_mq_ctx *ctx = rq->mq_ctx;
 
+        trace_block_rq_insert(hctx->queue, rq);
+
         list_add_tail(&rq->queuelist, &ctx->rq_list);
         blk_mq_hctx_mark_pending(hctx, ctx);