Messages in this thread Patch in this message | | | From | Johannes Thumshirn <> | Subject | [PATCH v3 2/2] nvme: add tracepoint for nvme_complete_rq | Date | Wed, 17 Jan 2018 11:53:36 +0100 |
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Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com>
--- Changes to v2: * Pass the whole struct request to the tracepoint * Removed spaces after parenthesis (Christoph) --- drivers/nvme/host/core.c | 2 ++ drivers/nvme/host/trace.h | 26 ++++++++++++++++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 9c5d476c8c6d..c61014d56279 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -193,6 +193,8 @@ static inline bool nvme_req_needs_retry(struct request *req) void nvme_complete_rq(struct request *req) { + trace_nvme_complete_rq(req); + if (unlikely(nvme_req(req)->status && nvme_req_needs_retry(req))) { if (nvme_req_needs_failover(req)) { nvme_failover_req(req); diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h index a168d806d494..b416dc0760c1 100644 --- a/drivers/nvme/host/trace.h +++ b/drivers/nvme/host/trace.h @@ -22,6 +22,8 @@ #include <linux/tracepoint.h> #include <linux/trace_seq.h> +#include "nvme.h" + #define nvme_opcode_name(opcode) { opcode, #opcode } #define show_opcode_name(val) \ __print_symbolic(val, \ @@ -66,6 +68,30 @@ TRACE_EVENT(nvme_setup_cmd, __parse_nvme_cmd(__entry->cmnd)) ); +TRACE_EVENT(nvme_complete_rq, + TP_PROTO(struct request *req), + TP_ARGS(req), + TP_STRUCT__entry( + __field(int, cid) + __field(__le64, result) + __field(u8, retries) + __field(u8, flags) + __field(u16, status) + ), + TP_fast_assign( + __entry->cid = req->tag; + __entry->result = 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, res=%llu, retries=%u, flags=0x%x, status=%u", + __entry->cid, + le64_to_cpu(__entry->result), + __entry->retries, __entry->flags, __entry->status) + +); + #endif /* _TRACE_NVME_H */ #undef TRACE_INCLUDE_PATH -- 2.12.3
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