diff options
Diffstat (limited to 'drivers/nvme/target/trace.h')
| -rw-r--r-- | drivers/nvme/target/trace.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/nvme/target/trace.h b/drivers/nvme/target/trace.h new file mode 100644 index 000000000000..e645caa882dd --- /dev/null +++ b/drivers/nvme/target/trace.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * NVM Express target device driver tracepoints + * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH + * + * This is entirely based on drivers/nvme/host/trace.h + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM nvmet + +#if !defined(_TRACE_NVMET_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_NVMET_H + +#include <linux/nvme.h> +#include <linux/tracepoint.h> +#include <linux/trace_seq.h> + +#include "nvmet.h" + +const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode, + u8 *cdw10); +const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode, + u8 *cdw10); +const char *nvmet_trace_parse_fabrics_cmd(struct trace_seq *p, u8 fctype, + u8 *spc); + +#define parse_nvme_cmd(qid, opcode, fctype, cdw10) \ + ((opcode) == nvme_fabrics_command ? \ + nvmet_trace_parse_fabrics_cmd(p, fctype, cdw10) : \ + (qid ? \ + nvmet_trace_parse_nvm_cmd(p, opcode, cdw10) : \ + nvmet_trace_parse_admin_cmd(p, opcode, cdw10))) + +const char *nvmet_trace_ctrl_name(struct trace_seq *p, struct nvmet_ctrl *ctrl); +#define __print_ctrl_name(ctrl) \ + nvmet_trace_ctrl_name(p, ctrl) + +const char *nvmet_trace_disk_name(struct trace_seq *p, char *name); +#define __print_disk_name(name) \ + nvmet_trace_disk_name(p, name) + +#ifndef TRACE_HEADER_MULTI_READ +static inline struct nvmet_ctrl *nvmet_req_to_ctrl(struct nvmet_req *req) +{ + return req->sq->ctrl; +} + +static inline void __assign_disk_name(char *name, struct nvmet_req *req, + bool init) +{ + struct nvmet_ctrl *ctrl = nvmet_req_to_ctrl(req); + struct nvmet_ns *ns; + + if ((init && req->sq->qid) || (!init && req->cq->qid)) { + ns = nvmet_find_namespace(ctrl, req->cmd->rw.nsid); + strncpy(name, ns->device_path, DISK_NAME_LEN); + return; + } + + memset(name, 0, DISK_NAME_LEN); +} +#endif + +TRACE_EVENT(nvmet_req_init, + TP_PROTO(struct nvmet_req *req, struct nvme_command *cmd), + TP_ARGS(req, cmd), + TP_STRUCT__entry( + __field(struct nvme_command *, cmd) + __field(struct nvmet_ctrl *, ctrl) + __array(char, disk, DISK_NAME_LEN) + __field(int, qid) + __field(u16, cid) + __field(u8, opcode) + __field(u8, fctype) + __field(u8, flags) + __field(u32, nsid) + __field(u64, metadata) + __array(u8, cdw10, 24) + ), + TP_fast_assign( + __entry->cmd = cmd; + __entry->ctrl = nvmet_req_to_ctrl(req); + __assign_disk_name(__entry->disk, req, true); + __entry->qid = req->sq->qid; + __entry->cid = cmd->common.command_id; + __entry->opcode = cmd->common.opcode; + __entry->fctype = cmd->fabrics.fctype; + __entry->flags = cmd->common.flags; + __entry->nsid = le32_to_cpu(cmd->common.nsid); + __entry->metadata = le64_to_cpu(cmd->common.metadata); + memcpy(__entry->cdw10, &cmd->common.cdw10, + sizeof(__entry->cdw10)); + ), + TP_printk("nvmet%s: %sqid=%d, cmdid=%u, nsid=%u, flags=%#x, " + "meta=%#llx, cmd=(%s, %s)", + __print_ctrl_name(__entry->ctrl), + __print_disk_name(__entry->disk), + __entry->qid, __entry->cid, __entry->nsid, + __entry->flags, __entry->metadata, + show_opcode_name(__entry->qid, __entry->opcode, + __entry->fctype), + parse_nvme_cmd(__entry->qid, __entry->opcode, + __entry->fctype, __entry->cdw10)) +); + +TRACE_EVENT(nvmet_req_complete, + TP_PROTO(struct nvmet_req *req), + TP_ARGS(req), + TP_STRUCT__entry( + __field(struct nvmet_ctrl *, ctrl) + __array(char, disk, DISK_NAME_LEN) + __field(int, qid) + __field(int, cid) + __field(u64, result) + __field(u16, status) + ), + TP_fast_assign( + __entry->ctrl = nvmet_req_to_ctrl(req); + __entry->qid = req->cq->qid; + __entry->cid = req->cqe->command_id; + __entry->result = le64_to_cpu(req->cqe->result.u64); + __entry->status = le16_to_cpu(req->cqe->status) >> 1; + __assign_disk_name(__entry->disk, req, false); + ), + TP_printk("nvmet%s: %sqid=%d, cmdid=%u, res=%#llx, status=%#x", + __print_ctrl_name(__entry->ctrl), + __print_disk_name(__entry->disk), + __entry->qid, __entry->cid, __entry->result, __entry->status) + +); + +#endif /* _TRACE_NVMET_H */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE trace + +/* This part must be outside protection */ +#include <trace/define_trace.h> |