LXR linux/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
  21const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
  22                u8 *cdw10);
  23const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
  24                u8 *cdw10);
  25const 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
  35const 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
  39const 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
  44static inline struct nvmet_ctrl *nvmet_req_to_ctrl(struct nvmet_req *req)
  45{
  46        return req->sq->ctrl;
  47}
  48
  49static 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
  65TRACE_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
 107TRACE_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>
 142