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IB/MAD: Add send path trace points

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Use the standard Linux trace mechanism to trace MADs being sent.  4 trace
points are added, when the MAD is posted to the qp, when the MAD is
completed, if a MAD is resent, and when the MAD completes in error.

Reviewed-by: "Ruhl, Michael J" <michael.j.ruhl@intel.com>
Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Ira Weiny 2019-03-19 14:11:44 -07:00 committed by Jason Gunthorpe
parent 2dd0cf77c9
commit 4d60cad5db
3 changed files with 220 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
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@ -7653,6 +7653,7 @@ F: drivers/infiniband/
F: include/uapi/linux/if_infiniband.h
F: include/uapi/rdma/
F: include/rdma/
F: include/trace/events/ib_mad.h
INGENIC JZ4780 DMA Driver
M: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>

33
drivers/infiniband/core/mad.c
View File

@ -3,7 +3,7 @@
* Copyright (c) 2005 Intel Corporation. All rights reserved.
* Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
* Copyright (c) 2009 HNR Consulting. All rights reserved.
* Copyright (c) 2014 Intel Corporation. All rights reserved.
* Copyright (c) 2014,2018 Intel Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
@ -51,6 +51,32 @@
#include "opa_smi.h"
#include "agent.h"
#define CREATE_TRACE_POINTS
#include <trace/events/ib_mad.h>
#ifdef CONFIG_TRACEPOINTS
static void create_mad_addr_info(struct ib_mad_send_wr_private *mad_send_wr,
struct ib_mad_qp_info *qp_info,
struct trace_event_raw_ib_mad_send_template *entry)
{
u16 pkey;
struct ib_device *dev = qp_info->port_priv->device;
u8 pnum = qp_info->port_priv->port_num;
struct ib_ud_wr *wr = &mad_send_wr->send_wr;
struct rdma_ah_attr attr = {};
rdma_query_ah(wr->ah, &attr);
/* These are common */
entry->sl = attr.sl;
ib_query_pkey(dev, pnum, wr->pkey_index, &pkey);
entry->pkey = pkey;
entry->rqpn = wr->remote_qpn;
entry->rqkey = wr->remote_qkey;
entry->dlid = rdma_ah_get_dlid(&attr);
}
#endif
static int mad_sendq_size = IB_MAD_QP_SEND_SIZE;
static int mad_recvq_size = IB_MAD_QP_RECV_SIZE;
@ -1215,6 +1241,7 @@ int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr)
spin_lock_irqsave(&qp_info->send_queue.lock, flags);
if (qp_info->send_queue.count < qp_info->send_queue.max_active) {
trace_ib_mad_ib_send_mad(mad_send_wr, qp_info);
ret = ib_post_send(mad_agent->qp, &mad_send_wr->send_wr.wr,
NULL);
list = &qp_info->send_queue.list;
@ -2488,6 +2515,8 @@ static void ib_mad_send_done(struct ib_cq *cq, struct ib_wc *wc)
send_queue = mad_list->mad_queue;
qp_info = send_queue->qp_info;
trace_ib_mad_send_done_handler(mad_send_wr, wc);
retry:
ib_dma_unmap_single(mad_send_wr->send_buf.mad_agent->device,
mad_send_wr->header_mapping,
@ -2519,6 +2548,7 @@ static void ib_mad_send_done(struct ib_cq *cq, struct ib_wc *wc)
ib_mad_complete_send_wr(mad_send_wr, &mad_send_wc);
if (queued_send_wr) {
trace_ib_mad_send_done_resend(queued_send_wr, qp_info);
ret = ib_post_send(qp_info->qp, &queued_send_wr->send_wr.wr,
NULL);
if (ret) {
@ -2566,6 +2596,7 @@ static bool ib_mad_send_error(struct ib_mad_port_private *port_priv,
if (mad_send_wr->retry) {
/* Repost send */
mad_send_wr->retry = 0;
trace_ib_mad_error_handler(mad_send_wr, qp_info);
ret = ib_post_send(qp_info->qp, &mad_send_wr->send_wr.wr,
NULL);
if (!ret)

187
include/trace/events/ib_mad.h Normal file
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@ -0,0 +1,187 @@
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright (c) 2018 Intel Corporation. All rights reserved.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM ib_mad
#if !defined(_TRACE_IB_MAD_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_IB_MAD_H
#include <linux/tracepoint.h>
#include <rdma/ib_mad.h>
#ifdef CONFIG_TRACEPOINTS
struct trace_event_raw_ib_mad_send_template;
static void create_mad_addr_info(struct ib_mad_send_wr_private *mad_send_wr,
struct ib_mad_qp_info *qp_info,
struct trace_event_raw_ib_mad_send_template *entry);
#endif
DECLARE_EVENT_CLASS(ib_mad_send_template,
TP_PROTO(struct ib_mad_send_wr_private *wr,
struct ib_mad_qp_info *qp_info),
TP_ARGS(wr, qp_info),
TP_STRUCT__entry(
__field(u8, base_version)
__field(u8, mgmt_class)
__field(u8, class_version)
__field(u8, port_num)
__field(u32, qp_num)
__field(u8, method)
__field(u8, sl)
__field(u16, attr_id)
__field(u32, attr_mod)
__field(u64, wrtid)
__field(u64, tid)
__field(u16, status)
__field(u16, class_specific)
__field(u32, length)
__field(u32, dlid)
__field(u32, rqpn)
__field(u32, rqkey)
__field(u32, dev_index)
__field(void *, agent_priv)
__field(unsigned long, timeout)
__field(int, retries_left)
__field(int, max_retries)
__field(int, retry)
__field(u16, pkey)
),
TP_fast_assign(
__entry->dev_index = wr->mad_agent_priv->agent.device->index;
__entry->port_num = wr->mad_agent_priv->agent.port_num;
__entry->qp_num = wr->mad_agent_priv->qp_info->qp->qp_num;
__entry->agent_priv = wr->mad_agent_priv;
__entry->wrtid = wr->tid;
__entry->max_retries = wr->max_retries;
__entry->retries_left = wr->retries_left;
__entry->retry = wr->retry;
__entry->timeout = wr->timeout;
__entry->length = wr->send_buf.hdr_len +
wr->send_buf.data_len;
__entry->base_version =
((struct ib_mad_hdr *)wr->send_buf.mad)->base_version;
__entry->mgmt_class =
((struct ib_mad_hdr *)wr->send_buf.mad)->mgmt_class;
__entry->class_version =
((struct ib_mad_hdr *)wr->send_buf.mad)->class_version;
__entry->method =
((struct ib_mad_hdr *)wr->send_buf.mad)->method;
__entry->status =
((struct ib_mad_hdr *)wr->send_buf.mad)->status;
__entry->class_specific =
((struct ib_mad_hdr *)wr->send_buf.mad)->class_specific;
__entry->tid = ((struct ib_mad_hdr *)wr->send_buf.mad)->tid;
__entry->attr_id =
((struct ib_mad_hdr *)wr->send_buf.mad)->attr_id;
__entry->attr_mod =
((struct ib_mad_hdr *)wr->send_buf.mad)->attr_mod;
create_mad_addr_info(wr, qp_info, __entry);
),
TP_printk("%d:%d QP%d agent %p: " \
"wrtid 0x%llx; %d/%d retries(%d); timeout %lu length %d : " \
"hdr : base_ver 0x%x class 0x%x class_ver 0x%x " \
"method 0x%x status 0x%x class_specific 0x%x tid 0x%llx " \
"attr_id 0x%x attr_mod 0x%x => dlid 0x%08x sl %d "\
"pkey 0x%x rpqn 0x%x rqpkey 0x%x",
__entry->dev_index, __entry->port_num, __entry->qp_num,
__entry->agent_priv, be64_to_cpu(__entry->wrtid),
__entry->retries_left, __entry->max_retries,
__entry->retry, __entry->timeout, __entry->length,
__entry->base_version, __entry->mgmt_class,
__entry->class_version,
__entry->method, be16_to_cpu(__entry->status),
be16_to_cpu(__entry->class_specific),
be64_to_cpu(__entry->tid), be16_to_cpu(__entry->attr_id),
be32_to_cpu(__entry->attr_mod),
be32_to_cpu(__entry->dlid), __entry->sl, __entry->pkey,
__entry->rqpn, __entry->rqkey
)
);
DEFINE_EVENT(ib_mad_send_template, ib_mad_error_handler,
TP_PROTO(struct ib_mad_send_wr_private *wr,
struct ib_mad_qp_info *qp_info),
TP_ARGS(wr, qp_info));
DEFINE_EVENT(ib_mad_send_template, ib_mad_ib_send_mad,
TP_PROTO(struct ib_mad_send_wr_private *wr,
struct ib_mad_qp_info *qp_info),
TP_ARGS(wr, qp_info));
DEFINE_EVENT(ib_mad_send_template, ib_mad_send_done_resend,
TP_PROTO(struct ib_mad_send_wr_private *wr,
struct ib_mad_qp_info *qp_info),
TP_ARGS(wr, qp_info));
TRACE_EVENT(ib_mad_send_done_handler,
TP_PROTO(struct ib_mad_send_wr_private *wr, struct ib_wc *wc),
TP_ARGS(wr, wc),
TP_STRUCT__entry(
__field(u8, port_num)
__field(u8, base_version)
__field(u8, mgmt_class)
__field(u8, class_version)
__field(u32, qp_num)
__field(u64, wrtid)
__field(u16, status)
__field(u16, wc_status)
__field(u32, length)
__field(void *, agent_priv)
__field(unsigned long, timeout)
__field(u32, dev_index)
__field(int, retries_left)
__field(int, max_retries)
__field(int, retry)
__field(u8, method)
),
TP_fast_assign(
__entry->dev_index = wr->mad_agent_priv->agent.device->index;
__entry->port_num = wr->mad_agent_priv->agent.port_num;
__entry->qp_num = wr->mad_agent_priv->qp_info->qp->qp_num;
__entry->agent_priv = wr->mad_agent_priv;
__entry->wrtid = wr->tid;
__entry->max_retries = wr->max_retries;
__entry->retries_left = wr->retries_left;
__entry->retry = wr->retry;
__entry->timeout = wr->timeout;
__entry->base_version =
((struct ib_mad_hdr *)wr->send_buf.mad)->base_version;
__entry->mgmt_class =
((struct ib_mad_hdr *)wr->send_buf.mad)->mgmt_class;
__entry->class_version =
((struct ib_mad_hdr *)wr->send_buf.mad)->class_version;
__entry->method =
((struct ib_mad_hdr *)wr->send_buf.mad)->method;
__entry->status =
((struct ib_mad_hdr *)wr->send_buf.mad)->status;
__entry->wc_status = wc->status;
__entry->length = wc->byte_len;
),
TP_printk("%d:%d QP%d : SEND WC Status %d : agent %p: " \
"wrtid 0x%llx %d/%d retries(%d) timeout %lu length %d: " \
"hdr : base_ver 0x%x class 0x%x class_ver 0x%x " \
"method 0x%x status 0x%x",
__entry->dev_index, __entry->port_num, __entry->qp_num,
__entry->wc_status,
__entry->agent_priv, be64_to_cpu(__entry->wrtid),
__entry->retries_left, __entry->max_retries,
__entry->retry, __entry->timeout,
__entry->length,
__entry->base_version, __entry->mgmt_class,
__entry->class_version, __entry->method,
be16_to_cpu(__entry->status)
)
);
#endif /* _TRACE_IB_MAD_H */
#include <trace/define_trace.h>