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Message-Id: <20180626135141.14088-3-jthumshirn@suse.de>
Date: Tue, 26 Jun 2018 15:51:41 +0200
From: Johannes Thumshirn <jthumshirn@...e.de>
To: Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
Keith Busch <keith.busch@...el.com>
Cc: Linux NVMe Mailinglist <linux-nvme@...ts.infradead.org>,
Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>,
Johannes Thumshirn <jthumshirn@...e.de>
Subject: [PATCH] nvme: trace: add disk name to tracepoints
Add disk name to tracepoints so we can better distinguish between
individual disks in the trace output and admin commands which
are represented without a disk name.
Signed-off-by: Johannes Thumshirn <jthumshirn@...e.de>
---
drivers/nvme/host/core.c | 4 ++--
drivers/nvme/host/trace.h | 39 +++++++++++++++++++++++++--------------
2 files changed, 27 insertions(+), 16 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 62602af9eb77..cc1340948245 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -655,9 +655,9 @@ blk_status_t nvme_setup_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
cmd->common.command_id = req->tag;
nvme_req(req)->ctrl = ctrl;
if (ns)
- trace_nvme_setup_nvm_cmd(req->q->id, cmd);
+ trace_nvme_setup_nvm_cmd(req, cmd, ns->disk->disk_name);
else
- trace_nvme_setup_admin_cmd(cmd);
+ trace_nvme_setup_admin_cmd(req, cmd);
return ret;
}
EXPORT_SYMBOL_GPL(nvme_setup_cmd);
diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h
index 01390f0e1671..371a816cd225 100644
--- a/drivers/nvme/host/trace.h
+++ b/drivers/nvme/host/trace.h
@@ -76,9 +76,10 @@ const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,
nvme_trace_parse_nvm_cmd(p, opcode, cdw10)
TRACE_EVENT(nvme_setup_admin_cmd,
- TP_PROTO(struct nvme_command *cmd),
- TP_ARGS(cmd),
+ TP_PROTO(struct request *req, struct nvme_command *cmd),
+ TP_ARGS(req, cmd),
TP_STRUCT__entry(
+ __field(int, ctrl_id)
__field(u8, opcode)
__field(u8, flags)
__field(u16, cid)
@@ -86,6 +87,7 @@ TRACE_EVENT(nvme_setup_admin_cmd,
__array(u8, cdw10, 24)
),
TP_fast_assign(
+ __entry->ctrl_id = nvme_req(req)->ctrl->cntlid;
__entry->opcode = cmd->common.opcode;
__entry->flags = cmd->common.flags;
__entry->cid = cmd->common.command_id;
@@ -93,17 +95,21 @@ TRACE_EVENT(nvme_setup_admin_cmd,
memcpy(__entry->cdw10, cmd->common.cdw10,
sizeof(__entry->cdw10));
),
- TP_printk(" cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
- __entry->cid, __entry->flags, __entry->metadata,
+ TP_printk("nvme%d: cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
+ __entry->ctrl_id, __entry->cid, __entry->flags,
+ __entry->metadata,
show_admin_opcode_name(__entry->opcode),
__parse_nvme_admin_cmd(__entry->opcode, __entry->cdw10))
);
TRACE_EVENT(nvme_setup_nvm_cmd,
- TP_PROTO(int qid, struct nvme_command *cmd),
- TP_ARGS(qid, cmd),
+ TP_PROTO(struct request *req, struct nvme_command *cmd,
+ char *disk_name),
+ TP_ARGS(req, cmd, disk_name),
TP_STRUCT__entry(
+ __string(name, disk_name)
+ __field(int, ctrl_id)
__field(int, qid)
__field(u8, opcode)
__field(u8, flags)
@@ -113,7 +119,9 @@ TRACE_EVENT(nvme_setup_nvm_cmd,
__array(u8, cdw10, 24)
),
TP_fast_assign(
- __entry->qid = qid;
+ __assign_str(name, disk_name);
+ __entry->ctrl_id = nvme_req(req)->ctrl->cntlid;
+ __entry->qid = req->q->id;
__entry->opcode = cmd->common.opcode;
__entry->flags = cmd->common.flags;
__entry->cid = cmd->common.command_id;
@@ -122,10 +130,10 @@ TRACE_EVENT(nvme_setup_nvm_cmd,
memcpy(__entry->cdw10, cmd->common.cdw10,
sizeof(__entry->cdw10));
),
- TP_printk("qid=%d, nsid=%u, cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
- __entry->qid, __entry->nsid, __entry->cid,
- __entry->flags, __entry->metadata,
- show_opcode_name(__entry->opcode),
+ TP_printk("nvme%d: disk=%s, qid=%d, nsid=%u, cmdid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
+ __entry->ctrl_id, __get_str(name), __entry->qid,
+ __entry->nsid, __entry->cid, __entry->flags,
+ __entry->metadata, show_opcode_name(__entry->opcode),
__parse_nvme_cmd(__entry->opcode, __entry->cdw10))
);
@@ -133,6 +141,7 @@ TRACE_EVENT(nvme_complete_rq,
TP_PROTO(struct request *req),
TP_ARGS(req),
TP_STRUCT__entry(
+ __field(int, ctrl_id)
__field(int, qid)
__field(int, cid)
__field(u64, result)
@@ -141,6 +150,7 @@ TRACE_EVENT(nvme_complete_rq,
__field(u16, status)
),
TP_fast_assign(
+ __entry->ctrl_id = nvme_req(req)->ctrl->cntlid;
__entry->qid = req->q->id;
__entry->cid = req->tag;
__entry->result = le64_to_cpu(nvme_req(req)->result.u64);
@@ -148,9 +158,10 @@ TRACE_EVENT(nvme_complete_rq,
__entry->flags = nvme_req(req)->flags;
__entry->status = nvme_req(req)->status;
),
- TP_printk("qid=%d, cmdid=%u, res=%llu, retries=%u, flags=0x%x, status=%u",
- __entry->qid, __entry->cid, __entry->result,
- __entry->retries, __entry->flags, __entry->status)
+ TP_printk("nvme%d: qid=%d, cmdid=%u, res=%llu, retries=%u, flags=0x%x, status=%u",
+ __entry->ctrl_id, __entry->qid, __entry->cid,
+ __entry->result, __entry->retries, __entry->flags,
+ __entry->status)
);
--
2.16.4
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