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5c629dc960
This will allow the trace event to know the full size of the data intended to be copied and silence read overflow checks. Reported-by: John Garry <john.garry@huawei.com> Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
175 lines
5 KiB
C
175 lines
5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* NVM Express device driver tracepoints
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* Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM nvme
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#if !defined(_TRACE_NVME_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NVME_H
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#include <linux/nvme.h>
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#include <linux/tracepoint.h>
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#include <linux/trace_seq.h>
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#include "nvme.h"
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const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode,
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u8 *cdw10);
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const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
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u8 *cdw10);
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const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p, u8 fctype,
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u8 *spc);
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#define parse_nvme_cmd(qid, opcode, fctype, cdw10) \
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((opcode) == nvme_fabrics_command ? \
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nvme_trace_parse_fabrics_cmd(p, fctype, cdw10) : \
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((qid) ? \
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nvme_trace_parse_nvm_cmd(p, opcode, cdw10) : \
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nvme_trace_parse_admin_cmd(p, opcode, cdw10)))
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const char *nvme_trace_disk_name(struct trace_seq *p, char *name);
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#define __print_disk_name(name) \
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nvme_trace_disk_name(p, name)
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#ifndef TRACE_HEADER_MULTI_READ
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static inline void __assign_disk_name(char *name, struct gendisk *disk)
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{
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if (disk)
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memcpy(name, disk->disk_name, DISK_NAME_LEN);
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else
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memset(name, 0, DISK_NAME_LEN);
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}
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#endif
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TRACE_EVENT(nvme_setup_cmd,
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TP_PROTO(struct request *req, struct nvme_command *cmd),
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TP_ARGS(req, cmd),
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TP_STRUCT__entry(
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__array(char, disk, DISK_NAME_LEN)
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__field(int, ctrl_id)
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__field(int, qid)
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__field(u8, opcode)
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__field(u8, flags)
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__field(u8, fctype)
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__field(u16, cid)
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__field(u32, nsid)
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__field(bool, metadata)
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__array(u8, cdw10, 24)
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),
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TP_fast_assign(
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__entry->ctrl_id = nvme_req(req)->ctrl->instance;
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__entry->qid = nvme_req_qid(req);
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__entry->opcode = cmd->common.opcode;
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__entry->flags = cmd->common.flags;
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__entry->cid = cmd->common.command_id;
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__entry->nsid = le32_to_cpu(cmd->common.nsid);
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__entry->metadata = !!blk_integrity_rq(req);
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__entry->fctype = cmd->fabrics.fctype;
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__assign_disk_name(__entry->disk, req->q->disk);
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memcpy(__entry->cdw10, &cmd->common.cdws,
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sizeof(__entry->cdw10));
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),
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TP_printk("nvme%d: %sqid=%d, cmdid=%u, nsid=%u, flags=0x%x, meta=0x%x, cmd=(%s %s)",
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__entry->ctrl_id, __print_disk_name(__entry->disk),
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__entry->qid, __entry->cid, __entry->nsid,
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__entry->flags, __entry->metadata,
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show_opcode_name(__entry->qid, __entry->opcode,
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__entry->fctype),
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parse_nvme_cmd(__entry->qid, __entry->opcode,
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__entry->fctype, __entry->cdw10))
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);
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TRACE_EVENT(nvme_complete_rq,
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TP_PROTO(struct request *req),
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TP_ARGS(req),
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TP_STRUCT__entry(
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__array(char, disk, DISK_NAME_LEN)
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__field(int, ctrl_id)
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__field(int, qid)
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__field(int, cid)
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__field(u64, result)
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__field(u8, retries)
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__field(u8, flags)
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__field(u16, status)
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),
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TP_fast_assign(
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__entry->ctrl_id = nvme_req(req)->ctrl->instance;
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__entry->qid = nvme_req_qid(req);
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__entry->cid = req->tag;
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__entry->result = le64_to_cpu(nvme_req(req)->result.u64);
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__entry->retries = nvme_req(req)->retries;
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__entry->flags = nvme_req(req)->flags;
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__entry->status = nvme_req(req)->status;
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__assign_disk_name(__entry->disk, req->q->disk);
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),
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TP_printk("nvme%d: %sqid=%d, cmdid=%u, res=%#llx, retries=%u, flags=0x%x, status=%#x",
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__entry->ctrl_id, __print_disk_name(__entry->disk),
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__entry->qid, __entry->cid, __entry->result,
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__entry->retries, __entry->flags, __entry->status)
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);
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#define aer_name(aer) { aer, #aer }
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TRACE_EVENT(nvme_async_event,
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TP_PROTO(struct nvme_ctrl *ctrl, u32 result),
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TP_ARGS(ctrl, result),
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TP_STRUCT__entry(
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__field(int, ctrl_id)
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__field(u32, result)
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),
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TP_fast_assign(
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__entry->ctrl_id = ctrl->instance;
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__entry->result = result;
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),
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TP_printk("nvme%d: NVME_AEN=%#08x [%s]",
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__entry->ctrl_id, __entry->result,
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__print_symbolic(__entry->result,
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aer_name(NVME_AER_NOTICE_NS_CHANGED),
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aer_name(NVME_AER_NOTICE_ANA),
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aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
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aer_name(NVME_AER_NOTICE_DISC_CHANGED),
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aer_name(NVME_AER_ERROR),
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aer_name(NVME_AER_SMART),
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aer_name(NVME_AER_CSS),
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aer_name(NVME_AER_VS))
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)
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);
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#undef aer_name
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TRACE_EVENT(nvme_sq,
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TP_PROTO(struct request *req, __le16 sq_head, int sq_tail),
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TP_ARGS(req, sq_head, sq_tail),
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TP_STRUCT__entry(
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__field(int, ctrl_id)
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__array(char, disk, DISK_NAME_LEN)
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__field(int, qid)
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__field(u16, sq_head)
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__field(u16, sq_tail)
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),
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TP_fast_assign(
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__entry->ctrl_id = nvme_req(req)->ctrl->instance;
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__assign_disk_name(__entry->disk, req->q->disk);
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__entry->qid = nvme_req_qid(req);
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__entry->sq_head = le16_to_cpu(sq_head);
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__entry->sq_tail = sq_tail;
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),
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TP_printk("nvme%d: %sqid=%d, head=%u, tail=%u",
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__entry->ctrl_id, __print_disk_name(__entry->disk),
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__entry->qid, __entry->sq_head, __entry->sq_tail
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)
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);
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#endif /* _TRACE_NVME_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE trace
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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