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linux_dsm_epyc7002/drivers/nvme/host/trace.h
yupeng 604c01d567 nvme-pci: trace SQ status on completions 
Export the disk name, queue id, sq_head, sq_tail to a trace event in
completion handling.

Usage example:

cd /sys/kernel/debug/tracing/events/nvme/nvme_sq

echo 'disk=="nvme1n1"' > filter

echo 1 > enable

cat /sys/kernel/debug/tracing/trace_pipe

Signed-off-by: yupeng <yupeng0921@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Keith Busch <keith.busch@intel.com>
[hch: slight formatting tweaks, use standard nvme tracepoint
 conventions]
Signed-off-by: Christoph Hellwig <hch@lst.de>

wip
2018-12-19 08:35:36 +01:00

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/*
* NVM Express device driver tracepoints
* Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM nvme
#if !defined(_TRACE_NVME_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_NVME_H
#include <linux/nvme.h>
#include <linux/tracepoint.h>
#include <linux/trace_seq.h>
#include "nvme.h"
#define nvme_admin_opcode_name(opcode) { opcode, #opcode }
#define show_admin_opcode_name(val) \
__print_symbolic(val, \
nvme_admin_opcode_name(nvme_admin_delete_sq), \
nvme_admin_opcode_name(nvme_admin_create_sq), \
nvme_admin_opcode_name(nvme_admin_get_log_page), \
nvme_admin_opcode_name(nvme_admin_delete_cq), \
nvme_admin_opcode_name(nvme_admin_create_cq), \
nvme_admin_opcode_name(nvme_admin_identify), \
nvme_admin_opcode_name(nvme_admin_abort_cmd), \
nvme_admin_opcode_name(nvme_admin_set_features), \
nvme_admin_opcode_name(nvme_admin_get_features), \
nvme_admin_opcode_name(nvme_admin_async_event), \
nvme_admin_opcode_name(nvme_admin_ns_mgmt), \
nvme_admin_opcode_name(nvme_admin_activate_fw), \
nvme_admin_opcode_name(nvme_admin_download_fw), \
nvme_admin_opcode_name(nvme_admin_ns_attach), \
nvme_admin_opcode_name(nvme_admin_keep_alive), \
nvme_admin_opcode_name(nvme_admin_directive_send), \
nvme_admin_opcode_name(nvme_admin_directive_recv), \
nvme_admin_opcode_name(nvme_admin_dbbuf), \
nvme_admin_opcode_name(nvme_admin_format_nvm), \
nvme_admin_opcode_name(nvme_admin_security_send), \
nvme_admin_opcode_name(nvme_admin_security_recv), \
nvme_admin_opcode_name(nvme_admin_sanitize_nvm))
#define nvme_opcode_name(opcode) { opcode, #opcode }
#define show_nvm_opcode_name(val) \
__print_symbolic(val, \
nvme_opcode_name(nvme_cmd_flush), \
nvme_opcode_name(nvme_cmd_write), \
nvme_opcode_name(nvme_cmd_read), \
nvme_opcode_name(nvme_cmd_write_uncor), \
nvme_opcode_name(nvme_cmd_compare), \
nvme_opcode_name(nvme_cmd_write_zeroes), \
nvme_opcode_name(nvme_cmd_dsm), \
nvme_opcode_name(nvme_cmd_resv_register), \
nvme_opcode_name(nvme_cmd_resv_report), \
nvme_opcode_name(nvme_cmd_resv_acquire), \
nvme_opcode_name(nvme_cmd_resv_release))
#define show_opcode_name(qid, opcode) \
(qid ? show_nvm_opcode_name(opcode) : show_admin_opcode_name(opcode))
const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
u8 *cdw10);
const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
u8 *cdw10);
#define parse_nvme_cmd(qid, opcode, cdw10) \
(qid ? \
nvme_trace_parse_nvm_cmd(p, opcode, cdw10) : \
nvme_trace_parse_admin_cmd(p, opcode, cdw10))
const char *nvme_trace_disk_name(struct trace_seq *p, char *name);
#define __print_disk_name(name) \
nvme_trace_disk_name(p, name)
#ifndef TRACE_HEADER_MULTI_READ
static inline void __assign_disk_name(char *name, struct gendisk *disk)
{
if (disk)
memcpy(name, disk->disk_name, DISK_NAME_LEN);
else
memset(name, 0, DISK_NAME_LEN);
}
#endif
TRACE_EVENT(nvme_setup_cmd,
TP_PROTO(struct request *req, struct nvme_command *cmd),
TP_ARGS(req, cmd),
TP_STRUCT__entry(
__array(char, disk, DISK_NAME_LEN)
__field(int, ctrl_id)
__field(int, qid)
__field(u8, opcode)
__field(u8, flags)
__field(u16, cid)
__field(u32, nsid)
__field(u64, metadata)
__array(u8, cdw10, 24)
),
TP_fast_assign(
__entry->ctrl_id = nvme_req(req)->ctrl->instance;
__entry->qid = nvme_req_qid(req);
__entry->opcode = cmd->common.opcode;
__entry->flags = cmd->common.flags;
__entry->cid = cmd->common.command_id;
__entry->nsid = le32_to_cpu(cmd->common.nsid);
__entry->metadata = le64_to_cpu(cmd->common.metadata);
__assign_disk_name(__entry->disk, req->rq_disk);
memcpy(__entry->cdw10, &cmd->common.cdw10,
6 * sizeof(__entry->cdw10));
),
TP_printk("nvme%d: %sqid=%d, cmdid=%u, nsid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
__entry->ctrl_id, __print_disk_name(__entry->disk),
__entry->qid, __entry->cid, __entry->nsid,
__entry->flags, __entry->metadata,
show_opcode_name(__entry->qid, __entry->opcode),
parse_nvme_cmd(__entry->qid, __entry->opcode, __entry->cdw10))
);
TRACE_EVENT(nvme_complete_rq,
TP_PROTO(struct request *req),
TP_ARGS(req),
TP_STRUCT__entry(
__array(char, disk, DISK_NAME_LEN)
__field(int, ctrl_id)
__field(int, qid)
__field(int, cid)
__field(u64, result)
__field(u8, retries)
__field(u8, flags)
__field(u16, status)
),
TP_fast_assign(
__entry->ctrl_id = nvme_req(req)->ctrl->instance;
__entry->qid = nvme_req_qid(req);
__entry->cid = req->tag;
__entry->result = le64_to_cpu(nvme_req(req)->result.u64);
__entry->retries = nvme_req(req)->retries;
__entry->flags = nvme_req(req)->flags;
__entry->status = nvme_req(req)->status;
__assign_disk_name(__entry->disk, req->rq_disk);
),
TP_printk("nvme%d: %sqid=%d, cmdid=%u, res=%llu, retries=%u, flags=0x%x, status=%u",
__entry->ctrl_id, __print_disk_name(__entry->disk),
__entry->qid, __entry->cid, __entry->result,
__entry->retries, __entry->flags, __entry->status)
);
#define aer_name(aer) { aer, #aer }
TRACE_EVENT(nvme_async_event,
TP_PROTO(struct nvme_ctrl *ctrl, u32 result),
TP_ARGS(ctrl, result),
TP_STRUCT__entry(
__field(int, ctrl_id)
__field(u32, result)
),
TP_fast_assign(
__entry->ctrl_id = ctrl->instance;
__entry->result = result;
),
TP_printk("nvme%d: NVME_AEN=%#08x [%s]",
__entry->ctrl_id, __entry->result,
__print_symbolic(__entry->result,
aer_name(NVME_AER_NOTICE_NS_CHANGED),
aer_name(NVME_AER_NOTICE_ANA),
aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
aer_name(NVME_AER_ERROR),
aer_name(NVME_AER_SMART),
aer_name(NVME_AER_CSS),
aer_name(NVME_AER_VS))
)
);
#undef aer_name
TRACE_EVENT(nvme_sq,
TP_PROTO(struct request *req, __le16 sq_head, int sq_tail),
TP_ARGS(req, sq_head, sq_tail),
TP_STRUCT__entry(
__field(int, ctrl_id)
__array(char, disk, DISK_NAME_LEN)
__field(int, qid)
__field(u16, sq_head)
__field(u16, sq_tail)
),
TP_fast_assign(
__entry->ctrl_id = nvme_req(req)->ctrl->instance;
__assign_disk_name(__entry->disk, req->rq_disk);
__entry->qid = nvme_req_qid(req);
__entry->sq_head = le16_to_cpu(sq_head);
__entry->sq_tail = sq_tail;
),
TP_printk("nvme%d: %sqid=%d, head=%u, tail=%u",
__entry->ctrl_id, __print_disk_name(__entry->disk),
__entry->qid, __entry->sq_head, __entry->sq_tail
)
);
#endif /* _TRACE_NVME_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>
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