drivers/nvme/target/trace.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * NVM Express target device driver tracepoints
   4  * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
   5  *
   6  * This is entirely based on drivers/nvme/host/trace.h
   7  */
   8
   9 #undef TRACE_SYSTEM
  10 #define TRACE_SYSTEM nvmet
  11
  12 #if !defined(_TRACE_NVMET_H) || defined(TRACE_HEADER_MULTI_READ)
  13 #define _TRACE_NVMET_H
  14
  15 #include <linux/nvme.h>
  16 #include <linux/tracepoint.h>
  17 #include <linux/trace_seq.h>
  18
  19 #include "nvmet.h"
  20
  21 const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
  22                 u8 *cdw10);
  23 const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
  24                 u8 *cdw10);
  25 const char *nvmet_trace_parse_fabrics_cmd(struct trace_seq *p, u8 fctype,
  26                 u8 *spc);
  27
  28 #define parse_nvme_cmd(qid, opcode, fctype, cdw10)                      \
  29         ((opcode) == nvme_fabrics_command ?                             \
  30          nvmet_trace_parse_fabrics_cmd(p, fctype, cdw10) :              \
  31         (qid ?                                                          \
  32          nvmet_trace_parse_nvm_cmd(p, opcode, cdw10) :                  \
  33          nvmet_trace_parse_admin_cmd(p, opcode, cdw10)))
  34
  35 const char *nvmet_trace_ctrl_name(struct trace_seq *p, struct nvmet_ctrl *ctrl);
  36 #define __print_ctrl_name(ctrl)                         \
  37         nvmet_trace_ctrl_name(p, ctrl)
  38
  39 const char *nvmet_trace_disk_name(struct trace_seq *p, char *name);
  40 #define __print_disk_name(name)                         \
  41         nvmet_trace_disk_name(p, name)
  42
  43 #ifndef TRACE_HEADER_MULTI_READ
  44 static inline struct nvmet_ctrl *nvmet_req_to_ctrl(struct nvmet_req *req)
  45 {
  46         return req->sq->ctrl;
  47 }
  48
  49 static inline void __assign_disk_name(char *name, struct nvmet_req *req,
  50                 bool init)
  51 {
  52         struct nvmet_ctrl *ctrl = nvmet_req_to_ctrl(req);
  53         struct nvmet_ns *ns;
  54
  55         if ((init && req->sq->qid) || (!init && req->cq->qid)) {
  56                 ns = nvmet_find_namespace(ctrl, req->cmd->rw.nsid);
  57                 strncpy(name, ns->device_path, DISK_NAME_LEN);
  58                 return;
  59         }
  60
  61         memset(name, 0, DISK_NAME_LEN);
  62 }
  63 #endif
  64
  65 TRACE_EVENT(nvmet_req_init,
  66         TP_PROTO(struct nvmet_req *req, struct nvme_command *cmd),
  67         TP_ARGS(req, cmd),
  68         TP_STRUCT__entry(
  69                 __field(struct nvme_command *, cmd)
  70                 __field(struct nvmet_ctrl *, ctrl)
  71                 __array(char, disk, DISK_NAME_LEN)
  72                 __field(int, qid)
  73                 __field(u16, cid)
  74                 __field(u8, opcode)
  75                 __field(u8, fctype)
  76                 __field(u8, flags)
  77                 __field(u32, nsid)
  78                 __field(u64, metadata)
  79                 __array(u8, cdw10, 24)
  80         ),
  81         TP_fast_assign(
  82                 __entry->cmd = cmd;
  83                 __entry->ctrl = nvmet_req_to_ctrl(req);
  84                 __assign_disk_name(__entry->disk, req, true);
  85                 __entry->qid = req->sq->qid;
  86                 __entry->cid = cmd->common.command_id;
  87                 __entry->opcode = cmd->common.opcode;
  88                 __entry->fctype = cmd->fabrics.fctype;
  89                 __entry->flags = cmd->common.flags;
  90                 __entry->nsid = le32_to_cpu(cmd->common.nsid);
  91                 __entry->metadata = le64_to_cpu(cmd->common.metadata);
  92                 memcpy(__entry->cdw10, &cmd->common.cdw10,
  93                         sizeof(__entry->cdw10));
  94         ),
  95         TP_printk("nvmet%s: %sqid=%d, cmdid=%u, nsid=%u, flags=%#x, "
  96                   "meta=%#llx, cmd=(%s, %s)",
  97                 __print_ctrl_name(__entry->ctrl),
  98                 __print_disk_name(__entry->disk),
  99                 __entry->qid, __entry->cid, __entry->nsid,
 100                 __entry->flags, __entry->metadata,
 101                 show_opcode_name(__entry->qid, __entry->opcode,
 102                                 __entry->fctype),
 103                 parse_nvme_cmd(__entry->qid, __entry->opcode,
 104                                 __entry->fctype, __entry->cdw10))
 105 );
 106
 107 TRACE_EVENT(nvmet_req_complete,
 108         TP_PROTO(struct nvmet_req *req),
 109         TP_ARGS(req),
 110         TP_STRUCT__entry(
 111                 __field(struct nvmet_ctrl *, ctrl)
 112                 __array(char, disk, DISK_NAME_LEN)
 113                 __field(int, qid)
 114                 __field(int, cid)
 115                 __field(u64, result)
 116                 __field(u16, status)
 117         ),
 118         TP_fast_assign(
 119                 __entry->ctrl = nvmet_req_to_ctrl(req);
 120                 __entry->qid = req->cq->qid;
 121                 __entry->cid = req->cqe->command_id;
 122                 __entry->result = le64_to_cpu(req->cqe->result.u64);
 123                 __entry->status = le16_to_cpu(req->cqe->status) >> 1;
 124                 __assign_disk_name(__entry->disk, req, false);
 125         ),
 126         TP_printk("nvmet%s: %sqid=%d, cmdid=%u, res=%#llx, status=%#x",
 127                 __print_ctrl_name(__entry->ctrl),
 128                 __print_disk_name(__entry->disk),
 129                 __entry->qid, __entry->cid, __entry->result, __entry->status)
 130
 131 );
 132
 133 #endif /* _TRACE_NVMET_H */
 134
 135 #undef TRACE_INCLUDE_PATH
 136 #define TRACE_INCLUDE_PATH .
 137 #undef TRACE_INCLUDE_FILE
 138 #define TRACE_INCLUDE_FILE trace
 139
 140 /* This part must be outside protection */
 141 #include <trace/define_trace.h>