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SUNRPC: Tracepoint to record errors in svc_xpo_create() 

Capture transport creation failures.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-04-28 17:13:32 -04:00
parent e3e67621e3
commit 4b8f380e46
2 changed files with 35 additions and 1 deletions
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29
include/trace/events/sunrpc.h
View File

@ -1167,6 +1167,35 @@ DEFINE_EVENT(svc_rqst_status, svc_send,
{ (1UL << XPT_KILL_TEMP), "XPT_KILL_TEMP"}, \
{ (1UL << XPT_CONG_CTRL), "XPT_CONG_CTRL"})
TRACE_EVENT(svc_xprt_create_err,
TP_PROTO(
const char *program,
const char *protocol,
struct sockaddr *sap,
const struct svc_xprt *xprt
),
TP_ARGS(program, protocol, sap, xprt),
TP_STRUCT__entry(
__field(long, error)
__string(program, program)
__string(protocol, protocol)
__array(unsigned char, addr, sizeof(struct sockaddr_in6))
),
TP_fast_assign(
__entry->error = PTR_ERR(xprt);
__assign_str(program, program);
__assign_str(protocol, protocol);
memcpy(__entry->addr, sap, sizeof(__entry->addr));
),
TP_printk("addr=%pISpc program=%s protocol=%s error=%ld",
__entry->addr, __get_str(program), __get_str(protocol),
__entry->error)
);
TRACE_EVENT(svc_xprt_do_enqueue,
TP_PROTO(struct svc_xprt *xprt, struct svc_rqst *rqst),

7
net/sunrpc/svc_xprt.c
View File

@ -206,6 +206,7 @@ static struct svc_xprt *__svc_xpo_create(struct svc_xprt_class *xcl,
.sin6_port = htons(port),
};
#endif
struct svc_xprt *xprt;
struct sockaddr *sap;
size_t len;
@ -224,7 +225,11 @@ static struct svc_xprt *__svc_xpo_create(struct svc_xprt_class *xcl,
return ERR_PTR(-EAFNOSUPPORT);
}
return xcl->xcl_ops->xpo_create(serv, net, sap, len, flags);
xprt = xcl->xcl_ops->xpo_create(serv, net, sap, len, flags);
if (IS_ERR(xprt))
trace_svc_xprt_create_err(serv->sv_program->pg_name,
xcl->xcl_name, sap, xprt);
return xprt;
}
/*