From 2796b569591c6f0681303f148a55e50c2cc8304a Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Thu, 7 Jun 2018 10:38:47 +0200 Subject: nvme: add bio remapping tracepoint Adding a tracepoint to trace bio remapping for native nvme multipath. Signed-off-by: Hannes Reinecke Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig --- drivers/nvme/host/multipath.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/nvme/host') diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index d7b664ae5923..1ffd3e8b13a1 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -12,6 +12,7 @@ */ #include +#include #include "nvme.h" static bool multipath = true; @@ -111,6 +112,9 @@ static blk_qc_t nvme_ns_head_make_request(struct request_queue *q, if (likely(ns)) { bio->bi_disk = ns->disk; bio->bi_opf |= REQ_NVME_MPATH; + trace_block_bio_remap(bio->bi_disk->queue, bio, + disk_devt(ns->head->disk), + bio->bi_iter.bi_sector); ret = direct_make_request(bio); } else if (!list_empty_careful(&head->list)) { dev_warn_ratelimited(dev, "no path available - requeuing I/O\n"); -- cgit v1.2.3