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net: qrtr: Add tracepoint support 

Add tracepoint support for QRTR with NS as the first candidate. Later on
this can be extended to core QRTR and transport drivers.

The trace_printk() used in NS has been replaced by tracepoints.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Manivannan Sadhasivam 2020-04-21 13:10:54 +05:30 committed by David S. Miller
parent 540bde5c2c
commit dfddb54043
2 changed files with 126 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

115
include/trace/events/qrtr.h Normal file
View File

@ -0,0 +1,115 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM qrtr
#if !defined(_TRACE_QRTR_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_QRTR_H
#include <linux/qrtr.h>
#include <linux/tracepoint.h>
TRACE_EVENT(qrtr_ns_service_announce_new,
TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port),
TP_ARGS(service, instance, node, port),
TP_STRUCT__entry(
__field(__le32, service)
__field(__le32, instance)
__field(__le32, node)
__field(__le32, port)
),
TP_fast_assign(
__entry->service = service;
__entry->instance = instance;
__entry->node = node;
__entry->port = port;
),
TP_printk("advertising new server [%d:%x]@[%d:%d]",
__entry->service, __entry->instance, __entry->node,
__entry->port
)
);
TRACE_EVENT(qrtr_ns_service_announce_del,
TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port),
TP_ARGS(service, instance, node, port),
TP_STRUCT__entry(
__field(__le32, service)
__field(__le32, instance)
__field(__le32, node)
__field(__le32, port)
),
TP_fast_assign(
__entry->service = service;
__entry->instance = instance;
__entry->node = node;
__entry->port = port;
),
TP_printk("advertising removal of server [%d:%x]@[%d:%d]",
__entry->service, __entry->instance, __entry->node,
__entry->port
)
);
TRACE_EVENT(qrtr_ns_server_add,
TP_PROTO(__le32 service, __le32 instance, __le32 node, __le32 port),
TP_ARGS(service, instance, node, port),
TP_STRUCT__entry(
__field(__le32, service)
__field(__le32, instance)
__field(__le32, node)
__field(__le32, port)
),
TP_fast_assign(
__entry->service = service;
__entry->instance = instance;
__entry->node = node;
__entry->port = port;
),
TP_printk("add server [%d:%x]@[%d:%d]",
__entry->service, __entry->instance, __entry->node,
__entry->port
)
);
TRACE_EVENT(qrtr_ns_message,
TP_PROTO(const char * const ctrl_pkt_str, __u32 sq_node, __u32 sq_port),
TP_ARGS(ctrl_pkt_str, sq_node, sq_port),
TP_STRUCT__entry(
__string(ctrl_pkt_str, ctrl_pkt_str)
__field(__u32, sq_node)
__field(__u32, sq_port)
),
TP_fast_assign(
__assign_str(ctrl_pkt_str, ctrl_pkt_str);
__entry->sq_node = sq_node;
__entry->sq_port = sq_port;
),
TP_printk("%s from %d:%d",
__get_str(ctrl_pkt_str), __entry->sq_node, __entry->sq_port
)
);
#endif /* _TRACE_QRTR_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

20
net/qrtr/ns.c
View File

@ -12,6 +12,9 @@
#include "qrtr.h"
#define CREATE_TRACE_POINTS
#include <trace/events/qrtr.h>
static RADIX_TREE(nodes, GFP_KERNEL);
static struct {
@ -105,8 +108,8 @@ static int service_announce_new(struct sockaddr_qrtr *dest,
struct msghdr msg = { };
struct kvec iv;
trace_printk("advertising new server [%d:%x]@[%d:%d]\n",
srv->service, srv->instance, srv->node, srv->port);
trace_qrtr_ns_service_announce_new(srv->service, srv->instance,
srv->node, srv->port);
iv.iov_base = &pkt;
iv.iov_len = sizeof(pkt);
@ -132,8 +135,8 @@ static int service_announce_del(struct sockaddr_qrtr *dest,
struct kvec iv;
int ret;
trace_printk("advertising removal of server [%d:%x]@[%d:%d]\n",
srv->service, srv->instance, srv->node, srv->port);
trace_qrtr_ns_service_announce_del(srv->service, srv->instance,
srv->node, srv->port);
iv.iov_base = &pkt;
iv.iov_len = sizeof(pkt);
@ -244,8 +247,8 @@ static struct qrtr_server *server_add(unsigned int service,
radix_tree_insert(&node->servers, port, srv);
trace_printk("add server [%d:%x]@[%d:%d]\n", srv->service,
srv->instance, srv->node, srv->port);
trace_qrtr_ns_server_add(srv->service, srv->instance,
srv->node, srv->port);
return srv;
@ -633,9 +636,8 @@ static void qrtr_ns_worker(struct work_struct *work)
cmd = le32_to_cpu(pkt->cmd);
if (cmd < ARRAY_SIZE(qrtr_ctrl_pkt_strings) &&
qrtr_ctrl_pkt_strings[cmd])
trace_printk("%s from %d:%d\n",
qrtr_ctrl_pkt_strings[cmd], sq.sq_node,
sq.sq_port);
trace_qrtr_ns_message(qrtr_ctrl_pkt_strings[cmd],
sq.sq_node, sq.sq_port);
ret = 0;
switch (cmd) {