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Commit 05653319 authored by Ira Weiny's avatar Ira Weiny Committed by Jason Gunthorpe
Browse files

IB/UMAD: Add umad trace points 



Trace MADs going to/from user space.

Suggested-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 0e65bae2

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -7654,6 +7654,7 @@ F: include/uapi/linux/if_infiniband.h 
F:	include/uapi/rdma/

F:	include/rdma/

F:	include/trace/events/ib_mad.h

F:	include/trace/events/ib_umad.h



INGENIC JZ4780 DMA Driver

M:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>

drivers/infiniband/core/user_mad.c

+12 −0
Original line number Diff line number Diff line
@@ -129,6 +129,9 @@ struct ib_umad_packet { 
	struct ib_user_mad mad;

};



#define CREATE_TRACE_POINTS

#include <trace/events/ib_umad.h>



static const dev_t base_umad_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE);

static const dev_t base_issm_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE) +

				   IB_UMAD_NUM_FIXED_MINOR;
@@ -334,6 +337,9 @@ static ssize_t copy_recv_mad(struct ib_umad_file *file, char __user *buf, 
				return -EFAULT;

		}

	}



	trace_ib_umad_read_recv(file, &packet->mad.hdr, &recv_buf->mad->mad_hdr);



	return hdr_size(file) + packet->length;

}
@@ -353,6 +359,9 @@ static ssize_t copy_send_mad(struct ib_umad_file *file, char __user *buf, 
	if (copy_to_user(buf, packet->mad.data, packet->length))

		return -EFAULT;



	trace_ib_umad_read_send(file, &packet->mad.hdr,

				(struct ib_mad_hdr *)&packet->mad.data);



	return size;

}
@@ -508,6 +517,9 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf, 


	mutex_lock(&file->mutex);



	trace_ib_umad_write(file, &packet->mad.hdr,

			    (struct ib_mad_hdr *)&packet->mad.data);



	agent = __get_agent(file, packet->mad.hdr.id);

	if (!agent) {

		ret = -EINVAL;

include/trace/events/ib_umad.h

0 → 100644
+126 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */



/*

 * Copyright (c) 2018 Intel Corporation.  All rights reserved.

 *

 */



#undef TRACE_SYSTEM

#define TRACE_SYSTEM ib_umad



#if !defined(_TRACE_IB_UMAD_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_IB_UMAD_H



#include <linux/tracepoint.h>



DECLARE_EVENT_CLASS(ib_umad_template,

	TP_PROTO(struct ib_umad_file *file, struct ib_user_mad_hdr *umad_hdr,

		 struct ib_mad_hdr *mad_hdr),

	TP_ARGS(file, umad_hdr, mad_hdr),



	TP_STRUCT__entry(

		__field(u8, port_num)

		__field(u8, sl)

		__field(u8, path_bits)

		__field(u8, grh_present)

		__field(u32, id)

		__field(u32, status)

		__field(u32, timeout_ms)

		__field(u32, retires)

		__field(u32, length)

		__field(u32, qpn)

		__field(u32, qkey)

		__field(u8, gid_index)

		__field(u8, hop_limit)

		__field(u16, lid)

		__field(u16, attr_id)

		__field(u16, pkey_index)

		__field(u8, base_version)

		__field(u8, mgmt_class)

		__field(u8, class_version)

		__field(u8, method)

		__field(u32, flow_label)

		__field(u16, mad_status)

		__field(u16, class_specific)

		__field(u32, attr_mod)

		__field(u64, tid)

		__array(u8, gid, 16)

		__field(u32, dev_index)

		__field(u8,  traffic_class)

	),



	TP_fast_assign(

		__entry->dev_index = file->port->ib_dev->index;

		__entry->port_num = file->port->port_num;



		__entry->id = umad_hdr->id;

		__entry->status = umad_hdr->status;

		__entry->timeout_ms = umad_hdr->timeout_ms;

		__entry->retires = umad_hdr->retries;

		__entry->length = umad_hdr->length;

		__entry->qpn = umad_hdr->qpn;

		__entry->qkey = umad_hdr->qkey;

		__entry->lid = umad_hdr->lid;

		__entry->sl = umad_hdr->sl;

		__entry->path_bits = umad_hdr->path_bits;

		__entry->grh_present = umad_hdr->grh_present;

		__entry->gid_index = umad_hdr->gid_index;

		__entry->hop_limit = umad_hdr->hop_limit;

		__entry->traffic_class = umad_hdr->traffic_class;

		memcpy(__entry->gid, umad_hdr->gid, sizeof(umad_hdr->gid));

		__entry->flow_label = umad_hdr->flow_label;

		__entry->pkey_index = umad_hdr->pkey_index;



		__entry->base_version = mad_hdr->base_version;

		__entry->mgmt_class = mad_hdr->mgmt_class;

		__entry->class_version = mad_hdr->class_version;

		__entry->method = mad_hdr->method;

		__entry->mad_status = mad_hdr->status;

		__entry->class_specific = mad_hdr->class_specific;

		__entry->tid = mad_hdr->tid;

		__entry->attr_id = mad_hdr->attr_id;

		__entry->attr_mod = mad_hdr->attr_mod;

	),



	TP_printk("%d:%d umad_hdr: id 0x%08x status 0x%08x ms %u ret %u " \

		  "len %u QP%u qkey 0x%08x lid 0x%04x sl %u path_bits 0x%x " \

		  "grh 0x%x gidi %u hop_lim %u traf_cl %u gid %pI6c " \

		  "flow 0x%08x pkeyi %u  MAD: base_ver 0x%x class 0x%x " \

		  "class_ver 0x%x method 0x%x status 0x%04x " \

		  "class_specific 0x%04x tid 0x%016llx attr_id 0x%04x " \

		  "attr_mod 0x%08x ",

		__entry->dev_index, __entry->port_num,

		__entry->id, __entry->status, __entry->timeout_ms,

		__entry->retires, __entry->length, be32_to_cpu(__entry->qpn),

		be32_to_cpu(__entry->qkey), be16_to_cpu(__entry->lid),

		__entry->sl, __entry->path_bits, __entry->grh_present,

		__entry->gid_index, __entry->hop_limit,

		__entry->traffic_class, &__entry->gid,

		be32_to_cpu(__entry->flow_label), __entry->pkey_index,

		__entry->base_version, __entry->mgmt_class,

		__entry->class_version, __entry->method,

		be16_to_cpu(__entry->mad_status),

		be16_to_cpu(__entry->class_specific),

		be64_to_cpu(__entry->tid), be16_to_cpu(__entry->attr_id),

		be32_to_cpu(__entry->attr_mod)

	)

);



DEFINE_EVENT(ib_umad_template, ib_umad_write,

	TP_PROTO(struct ib_umad_file *file, struct ib_user_mad_hdr *umad_hdr,

		 struct ib_mad_hdr *mad_hdr),

	TP_ARGS(file, umad_hdr, mad_hdr));



DEFINE_EVENT(ib_umad_template, ib_umad_read_recv,

	TP_PROTO(struct ib_umad_file *file, struct ib_user_mad_hdr *umad_hdr,

		 struct ib_mad_hdr *mad_hdr),

	TP_ARGS(file, umad_hdr, mad_hdr));



DEFINE_EVENT(ib_umad_template, ib_umad_read_send,

	TP_PROTO(struct ib_umad_file *file, struct ib_user_mad_hdr *umad_hdr,

		 struct ib_mad_hdr *mad_hdr),

	TP_ARGS(file, umad_hdr, mad_hdr));



#endif /* _TRACE_IB_UMAD_H */



#include <trace/define_trace.h>