diff options
| author | Johannes Thumshirn <jthumshirn@suse.de> | 2018-01-26 13:21:38 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-01-26 14:34:40 +0300 |
| commit | ca5554a696dce37852f6d6721520b4f13fc295c3 (patch) | |
| tree | 625bc90db856784abd16721d7552953672979747 | |
| parent | 3d030e41d96f46c14faf79f19c3cf1b9961815c8 (diff) | |
| download | linux-ca5554a696dce37852f6d6721520b4f13fc295c3.tar.xz | |
nvme: add tracepoint for nvme_complete_rq
Add a tracepoint in nvme_complete_rq() for completions of NVMe commands. An
expmale output of the trace-point is as follows:
<idle>-0 [001] d.h. 3.505266: nvme_complete_rq: cmdid=989, qid=1, res=0, retries=0, flags=0x0, status=0
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/nvme/host/core.c | 2 | ||||
| -rw-r--r-- | drivers/nvme/host/trace.h | 25 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index f1430ca79a5b..b3af8e914570 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -220,6 +220,8 @@ void nvme_complete_rq(struct request *req) { blk_status_t status = nvme_error_status(req); + trace_nvme_complete_rq(req); + if (unlikely(status != BLK_STS_OK && nvme_req_needs_retry(req))) { if (nvme_req_needs_failover(req, status)) { nvme_failover_req(req); diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h index feadf0b57d17..ea91fccd1bc0 100644 --- a/drivers/nvme/host/trace.h +++ b/drivers/nvme/host/trace.h @@ -129,6 +129,31 @@ TRACE_EVENT(nvme_setup_nvm_cmd, __parse_nvme_cmd(__entry->opcode, __entry->cdw10)) ); +TRACE_EVENT(nvme_complete_rq, + TP_PROTO(struct request *req), + TP_ARGS(req), + TP_STRUCT__entry( + __field(int, qid) + __field(int, cid) + __field(u64, result) + __field(u8, retries) + __field(u8, flags) + __field(u16, status) + ), + TP_fast_assign( + __entry->qid = req->q->id; + __entry->cid = req->tag; + __entry->result = le64_to_cpu(nvme_req(req)->result.u64); + __entry->retries = nvme_req(req)->retries; + __entry->flags = nvme_req(req)->flags; + __entry->status = nvme_req(req)->status; + ), + TP_printk("cmdid=%u, qid=%d, res=%llu, retries=%u, flags=0x%x, status=%u", + __entry->cid, __entry->qid, __entry->result, + __entry->retries, __entry->flags, __entry->status) + +); + #endif /* _TRACE_NVME_H */ #undef TRACE_INCLUDE_PATH |