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_req_name(char *name, struct nvmet_req *req)
  50 {
  51         if (!req->ns) {
  52                 memset(name, 0, DISK_NAME_LEN);
  53                 return;
  54         }
  55
  56         strncpy(name, req->ns->device_path,
  57                 min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path)));
  58 }
  59 #endif
  60
  61 TRACE_EVENT(nvmet_req_init,
  62         TP_PROTO(struct nvmet_req *req, struct nvme_command *cmd),
  63         TP_ARGS(req, cmd),
  64         TP_STRUCT__entry(
  65                 __field(struct nvme_command *, cmd)
  66                 __field(struct nvmet_ctrl *, ctrl)
  67                 __array(char, disk, DISK_NAME_LEN)
  68                 __field(int, qid)
  69                 __field(u16, cid)
  70                 __field(u8, opcode)
  71                 __field(u8, fctype)
  72                 __field(u8, flags)
  73                 __field(u32, nsid)
  74                 __field(u64, metadata)
  75                 __array(u8, cdw10, 24)
  76         ),
  77         TP_fast_assign(
  78                 __entry->cmd = cmd;
  79                 __entry->ctrl = nvmet_req_to_ctrl(req);
  80                 __assign_req_name(__entry->disk, req);
  81                 __entry->qid = req->sq->qid;
  82                 __entry->cid = cmd->common.command_id;
  83                 __entry->opcode = cmd->common.opcode;
  84                 __entry->fctype = cmd->fabrics.fctype;
  85                 __entry->flags = cmd->common.flags;
  86                 __entry->nsid = le32_to_cpu(cmd->common.nsid);
  87                 __entry->metadata = le64_to_cpu(cmd->common.metadata);
  88                 memcpy(__entry->cdw10, &cmd->common.cdw10,
  89                         sizeof(__entry->cdw10));
  90         ),
  91         TP_printk("nvmet%s: %sqid=%d, cmdid=%u, nsid=%u, flags=%#x, "
  92                   "meta=%#llx, cmd=(%s, %s)",
  93                 __print_ctrl_name(__entry->ctrl),
  94                 __print_disk_name(__entry->disk),
  95                 __entry->qid, __entry->cid, __entry->nsid,
  96                 __entry->flags, __entry->metadata,
  97                 show_opcode_name(__entry->qid, __entry->opcode,
  98                                 __entry->fctype),
  99                 parse_nvme_cmd(__entry->qid, __entry->opcode,
 100                                 __entry->fctype, __entry->cdw10))
 101 );
 102
 103 TRACE_EVENT(nvmet_req_complete,
 104         TP_PROTO(struct nvmet_req *req),
 105         TP_ARGS(req),
 106         TP_STRUCT__entry(
 107                 __field(struct nvmet_ctrl *, ctrl)
 108                 __array(char, disk, DISK_NAME_LEN)
 109                 __field(int, qid)
 110                 __field(int, cid)
 111                 __field(u64, result)
 112                 __field(u16, status)
 113         ),
 114         TP_fast_assign(
 115                 __entry->ctrl = nvmet_req_to_ctrl(req);
 116                 __entry->qid = req->cq->qid;
 117                 __entry->cid = req->cqe->command_id;
 118                 __entry->result = le64_to_cpu(req->cqe->result.u64);
 119                 __entry->status = le16_to_cpu(req->cqe->status) >> 1;
 120                 __assign_req_name(__entry->disk, req);
 121         ),
 122         TP_printk("nvmet%s: %sqid=%d, cmdid=%u, res=%#llx, status=%#x",
 123                 __print_ctrl_name(__entry->ctrl),
 124                 __print_disk_name(__entry->disk),
 125                 __entry->qid, __entry->cid, __entry->result, __entry->status)
 126
 127 );
 128
 129 #define aer_name(aer) { aer, #aer }
 130
 131 TRACE_EVENT(nvmet_async_event,
 132         TP_PROTO(struct nvmet_ctrl *ctrl, __le32 result),
 133         TP_ARGS(ctrl, result),
 134         TP_STRUCT__entry(
 135                 __field(int, ctrl_id)
 136                 __field(u32, result)
 137         ),
 138         TP_fast_assign(
 139                 __entry->ctrl_id = ctrl->cntlid;
 140                 __entry->result = (le32_to_cpu(result) & 0xff00) >> 8;
 141         ),
 142         TP_printk("nvmet%d: NVME_AEN=%#08x [%s]",
 143                 __entry->ctrl_id, __entry->result,
 144                 __print_symbolic(__entry->result,
 145                 aer_name(NVME_AER_NOTICE_NS_CHANGED),
 146                 aer_name(NVME_AER_NOTICE_ANA),
 147                 aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
 148                 aer_name(NVME_AER_NOTICE_DISC_CHANGED),
 149                 aer_name(NVME_AER_ERROR),
 150                 aer_name(NVME_AER_SMART),
 151                 aer_name(NVME_AER_CSS),
 152                 aer_name(NVME_AER_VS))
 153         )
 154 );
 155 #undef aer_name
 156
 157 #endif /* _TRACE_NVMET_H */
 158
 159 #undef TRACE_INCLUDE_PATH
 160 #define TRACE_INCLUDE_PATH .
 161 #undef TRACE_INCLUDE_FILE
 162 #define TRACE_INCLUDE_FILE trace
 163
 164 /* This part must be outside protection */
 165 #include <trace/define_trace.h>