From: Ira Weiny <ira.weiny@xxxxxxxxx>
Trace MADs going to/from user space.
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
---
Changes from v2
Rebased on current RDMA for next
convert dev_name to string
convert license to SPDX
Reorder fields for better ring buffer utilization
Changes from v1
Update MAINTAINERS file
MAINTAINERS | 1 +
drivers/infiniband/core/user_mad.c | 7 +++
include/trace/events/ib_umad.h | 112 +++++++++++++++++++++++++++++++++++++
3 files changed, 120 insertions(+)
create mode 100644 include/trace/events/ib_umad.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 6b10f044afa0..a6ab68f294d3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7378,6 +7378,7 @@ 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@xxxxxxxxxx>
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index de8d31ab8945..e5363d9922c3 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -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;
@@ -391,6 +394,8 @@ static ssize_t ib_umad_read(struct file *filp, char __user *buf,
else
ret = copy_send_mad(file, buf, packet, count);
+ trace_ib_umad_read(file, (struct ib_user_mad *)buf);
+
if (ret < 0) {
/* Requeue packet */
mutex_lock(&file->mutex);
@@ -508,6 +513,8 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
mutex_lock(&file->mutex);
+ trace_ib_umad_write(file, &packet->mad);
+
agent = __get_agent(file, packet->mad.hdr.id);
if (!agent) {
ret = -EINVAL;
diff --git a/include/trace/events/ib_umad.h b/include/trace/events/ib_umad.h
new file mode 100644
index 000000000000..edf41abaddbd
--- /dev/null
+++ b/include/trace/events/ib_umad.h
@@ -0,0 +1,112 @@
+// 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 *mad),
+ TP_ARGS(file, mad),
+
+ 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)
+ __string(dev_name, file->port->ib_dev->name);
+ __field(u8, traffic_class)
+ ),
+
+ TP_fast_assign(
+ __assign_str(dev_name, file->port->ib_dev->name);
+ __entry->port_num = file->port->port_num;
+
+ __entry->id = mad->hdr.id;
+ __entry->status = mad->hdr.status;
+ __entry->timeout_ms = mad->hdr.timeout_ms;
+ __entry->retires = mad->hdr.retries;
+ __entry->length = mad->hdr.length;
+ __entry->qpn = mad->hdr.qpn;
+ __entry->qkey = mad->hdr.qkey;
+ __entry->lid = mad->hdr.lid;
+ __entry->sl = mad->hdr.sl;
+ __entry->path_bits = mad->hdr.path_bits;
+ __entry->grh_present = mad->hdr.grh_present;
+ __entry->gid_index = mad->hdr.gid_index;
+ __entry->hop_limit = mad->hdr.hop_limit;
+ __entry->traffic_class = mad->hdr.traffic_class;
+ memcpy(__entry->gid, mad->hdr.gid, sizeof(mad->hdr.gid));
+ __entry->flow_label = mad->hdr.flow_label;
+ __entry->pkey_index = mad->hdr.pkey_index;
+
+ __entry->base_version = ((struct ib_mad_hdr *)mad->data)->base_version;
+ __entry->mgmt_class = ((struct ib_mad_hdr *)mad->data)->mgmt_class;
+ __entry->class_version = ((struct ib_mad_hdr *)mad->data)->class_version;
+ __entry->method = ((struct ib_mad_hdr *)mad->data)->method;
+ __entry->mad_status = ((struct ib_mad_hdr *)mad->data)->status;
+ __entry->class_specific = ((struct ib_mad_hdr *)mad->data)->class_specific;
+ __entry->tid = ((struct ib_mad_hdr *)mad->data)->tid;
+ __entry->attr_id = ((struct ib_mad_hdr *)mad->data)->attr_id;
+ __entry->attr_mod = ((struct ib_mad_hdr *)mad->data)->attr_mod;
+ ),
+
+ TP_printk("%s:%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 ",
+ __get_str(dev_name), __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 *mad),
+ TP_ARGS(file, mad));
+
+DEFINE_EVENT(ib_umad_template, ib_umad_read,
+ TP_PROTO(struct ib_umad_file *file, struct ib_user_mad *mad),
+ TP_ARGS(file, mad));
+
+#endif /* _TRACE_IB_UMAD_H */
+
+#include <trace/define_trace.h>
--
1.8.3.1
