nvme/target/trace.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * NVM Express target device driver tracepoints
0004  * Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
0005  *
0006  * This is entirely based on drivers/nvme/host/trace.h
0007  */
0008
0009 #undef TRACE_SYSTEM
0010 #define TRACE_SYSTEM nvmet
0011
0012 #if !defined(_TRACE_NVMET_H) || defined(TRACE_HEADER_MULTI_READ)
0013 #define _TRACE_NVMET_H
0014
0015 #include <linux/nvme.h>
0016 #include <linux/tracepoint.h>
0017 #include <linux/trace_seq.h>
0018
0019 #include "nvmet.h"
0020
0021 const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
0022         u8 *cdw10);
0023 const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
0024         u8 *cdw10);
0025 const char *nvmet_trace_parse_fabrics_cmd(struct trace_seq *p, u8 fctype,
0026         u8 *spc);
0027
0028 #define parse_nvme_cmd(qid, opcode, fctype, cdw10)          \
0029     ((opcode) == nvme_fabrics_command ?             \
0030      nvmet_trace_parse_fabrics_cmd(p, fctype, cdw10) :      \
0031     (qid ?                              \
0032      nvmet_trace_parse_nvm_cmd(p, opcode, cdw10) :          \
0033      nvmet_trace_parse_admin_cmd(p, opcode, cdw10)))
0034
0035 const char *nvmet_trace_ctrl_name(struct trace_seq *p, struct nvmet_ctrl *ctrl);
0036 #define __print_ctrl_name(ctrl)             \
0037     nvmet_trace_ctrl_name(p, ctrl)
0038
0039 const char *nvmet_trace_disk_name(struct trace_seq *p, char *name);
0040 #define __print_disk_name(name)             \
0041     nvmet_trace_disk_name(p, name)
0042
0043 #ifndef TRACE_HEADER_MULTI_READ
0044 static inline struct nvmet_ctrl *nvmet_req_to_ctrl(struct nvmet_req *req)
0045 {
0046     return req->sq->ctrl;
0047 }
0048
0049 static inline void __assign_req_name(char *name, struct nvmet_req *req)
0050 {
0051     if (!req->ns) {
0052         memset(name, 0, DISK_NAME_LEN);
0053         return;
0054     }
0055
0056     strncpy(name, req->ns->device_path,
0057         min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path)));
0058 }
0059 #endif
0060
0061 TRACE_EVENT(nvmet_req_init,
0062     TP_PROTO(struct nvmet_req *req, struct nvme_command *cmd),
0063     TP_ARGS(req, cmd),
0064     TP_STRUCT__entry(
0065         __field(struct nvme_command *, cmd)
0066         __field(struct nvmet_ctrl *, ctrl)
0067         __array(char, disk, DISK_NAME_LEN)
0068         __field(int, qid)
0069         __field(u16, cid)
0070         __field(u8, opcode)
0071         __field(u8, fctype)
0072         __field(u8, flags)
0073         __field(u32, nsid)
0074         __field(u64, metadata)
0075         __array(u8, cdw10, 24)
0076     ),
0077     TP_fast_assign(
0078         __entry->cmd = cmd;
0079         __entry->ctrl = nvmet_req_to_ctrl(req);
0080         __assign_req_name(__entry->disk, req);
0081         __entry->qid = req->sq->qid;
0082         __entry->cid = cmd->common.command_id;
0083         __entry->opcode = cmd->common.opcode;
0084         __entry->fctype = cmd->fabrics.fctype;
0085         __entry->flags = cmd->common.flags;
0086         __entry->nsid = le32_to_cpu(cmd->common.nsid);
0087         __entry->metadata = le64_to_cpu(cmd->common.metadata);
0088         memcpy(__entry->cdw10, &cmd->common.cdw10,
0089             sizeof(__entry->cdw10));
0090     ),
0091     TP_printk("nvmet%s: %sqid=%d, cmdid=%u, nsid=%u, flags=%#x, "
0092           "meta=%#llx, cmd=(%s, %s)",
0093         __print_ctrl_name(__entry->ctrl),
0094         __print_disk_name(__entry->disk),
0095         __entry->qid, __entry->cid, __entry->nsid,
0096         __entry->flags, __entry->metadata,
0097         show_opcode_name(__entry->qid, __entry->opcode,
0098                 __entry->fctype),
0099         parse_nvme_cmd(__entry->qid, __entry->opcode,
0100                 __entry->fctype, __entry->cdw10))
0101 );
0102
0103 TRACE_EVENT(nvmet_req_complete,
0104     TP_PROTO(struct nvmet_req *req),
0105     TP_ARGS(req),
0106     TP_STRUCT__entry(
0107         __field(struct nvmet_ctrl *, ctrl)
0108         __array(char, disk, DISK_NAME_LEN)
0109         __field(int, qid)
0110         __field(int, cid)
0111         __field(u64, result)
0112         __field(u16, status)
0113     ),
0114     TP_fast_assign(
0115         __entry->ctrl = nvmet_req_to_ctrl(req);
0116         __entry->qid = req->cq->qid;
0117         __entry->cid = req->cqe->command_id;
0118         __entry->result = le64_to_cpu(req->cqe->result.u64);
0119         __entry->status = le16_to_cpu(req->cqe->status) >> 1;
0120         __assign_req_name(__entry->disk, req);
0121     ),
0122     TP_printk("nvmet%s: %sqid=%d, cmdid=%u, res=%#llx, status=%#x",
0123         __print_ctrl_name(__entry->ctrl),
0124         __print_disk_name(__entry->disk),
0125         __entry->qid, __entry->cid, __entry->result, __entry->status)
0126
0127 );
0128
0129 #define aer_name(aer) { aer, #aer }
0130
0131 TRACE_EVENT(nvmet_async_event,
0132     TP_PROTO(struct nvmet_ctrl *ctrl, __le32 result),
0133     TP_ARGS(ctrl, result),
0134     TP_STRUCT__entry(
0135         __field(int, ctrl_id)
0136         __field(u32, result)
0137     ),
0138     TP_fast_assign(
0139         __entry->ctrl_id = ctrl->cntlid;
0140         __entry->result = (le32_to_cpu(result) & 0xff00) >> 8;
0141     ),
0142     TP_printk("nvmet%d: NVME_AEN=%#08x [%s]",
0143         __entry->ctrl_id, __entry->result,
0144         __print_symbolic(__entry->result,
0145         aer_name(NVME_AER_NOTICE_NS_CHANGED),
0146         aer_name(NVME_AER_NOTICE_ANA),
0147         aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
0148         aer_name(NVME_AER_NOTICE_DISC_CHANGED),
0149         aer_name(NVME_AER_ERROR),
0150         aer_name(NVME_AER_SMART),
0151         aer_name(NVME_AER_CSS),
0152         aer_name(NVME_AER_VS))
0153     )
0154 );
0155 #undef aer_name
0156
0157 #endif /* _TRACE_NVMET_H */
0158
0159 #undef TRACE_INCLUDE_PATH
0160 #define TRACE_INCLUDE_PATH .
0161 #undef TRACE_INCLUDE_FILE
0162 #define TRACE_INCLUDE_FILE trace
0163
0164 /* This part must be outside protection */
0165 #include <trace/define_trace.h>