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Date: Wed, 10 Dec 2014 14:07:58 -0500
From: Jeff Layton <jlayton@...marydata.com>
To: bfields@...ldses.org
Cc: linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
Tejun Heo <tj@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
NeilBrown <neilb@...e.de>
Subject: [PATCH v2 14/16] sunrpc: add more tracepoints around svc_xprt handling
Turn the svc_xprt_dequeue and svc_xprt_do_enqueue tracepoints into a
event classes, and use them to add events for svc_xprt_enqueued,
svc_xprt_active, svc_xprt_received, and svc_xprt_enqueue.
Signed-off-by: Jeff Layton <jlayton@...marydata.com>
---
include/trace/events/sunrpc.h | 36 +++++++++++++++++++++++++++---------
net/sunrpc/svc_wq.c | 4 ++++
net/sunrpc/svc_xprt.c | 9 ++++++++-
3 files changed, 39 insertions(+), 10 deletions(-)
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index b9c1dc6c825a..41e09a1b962d 100644
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -496,28 +496,40 @@ DEFINE_EVENT(svc_rqst_status, svc_send,
{ (1UL << XPT_CACHE_AUTH), "XPT_CACHE_AUTH"}, \
{ (1UL << XPT_LOCAL), "XPT_LOCAL"})
-TRACE_EVENT(svc_xprt_do_enqueue,
- TP_PROTO(struct svc_xprt *xprt, struct svc_rqst *rqst),
+/* events associated with both a rqst and a xprt */
+DECLARE_EVENT_CLASS(svc_xprt_rqst_event,
+ TP_PROTO(struct svc_rqst *rqst, struct svc_xprt *xprt),
- TP_ARGS(xprt, rqst),
+ TP_ARGS(rqst, xprt),
TP_STRUCT__entry(
- __field(struct svc_xprt *, xprt)
__field(struct svc_rqst *, rqst)
+ __field(struct svc_xprt *, xprt)
),
TP_fast_assign(
- __entry->xprt = xprt;
__entry->rqst = rqst;
+ __entry->xprt = xprt;
),
- TP_printk("xprt=0x%p addr=%pIScp pid=%d flags=%s", __entry->xprt,
- (struct sockaddr *)&__entry->xprt->xpt_remote,
- __entry->rqst ? __entry->rqst->rq_task->pid : 0,
+ TP_printk("rqst=0x%p xprt=0x%p addr=%pIScp flags=%s", __entry->rqst,
+ __entry->xprt, (struct sockaddr *)&__entry->xprt->xpt_remote,
show_svc_xprt_flags(__entry->xprt->xpt_flags))
);
-TRACE_EVENT(svc_xprt_dequeue,
+DEFINE_EVENT(svc_xprt_rqst_event, svc_xprt_enqueued,
+ TP_PROTO(struct svc_rqst *rqst, struct svc_xprt *xprt),
+ TP_ARGS(rqst, xprt));
+
+DEFINE_EVENT(svc_xprt_rqst_event, svc_xprt_active,
+ TP_PROTO(struct svc_rqst *rqst, struct svc_xprt *xprt),
+ TP_ARGS(rqst, xprt));
+
+DEFINE_EVENT(svc_xprt_rqst_event, svc_xprt_received,
+ TP_PROTO(struct svc_rqst *rqst, struct svc_xprt *xprt),
+ TP_ARGS(rqst, xprt));
+
+DECLARE_EVENT_CLASS(svc_xprt_event,
TP_PROTO(struct svc_xprt *xprt),
TP_ARGS(xprt),
@@ -539,6 +551,12 @@ TRACE_EVENT(svc_xprt_dequeue,
show_svc_xprt_flags(__entry->flags))
);
+DEFINE_EVENT(svc_xprt_event, svc_xprt_enqueue,
+ TP_PROTO(struct svc_xprt *xprt), TP_ARGS(xprt));
+
+DEFINE_EVENT(svc_xprt_event, svc_xprt_dequeue,
+ TP_PROTO(struct svc_xprt *xprt), TP_ARGS(xprt));
+
TRACE_EVENT(svc_wake_up,
TP_PROTO(int pid),
diff --git a/net/sunrpc/svc_wq.c b/net/sunrpc/svc_wq.c
index 1ca26d51b8ec..779eb51e4bbb 100644
--- a/net/sunrpc/svc_wq.c
+++ b/net/sunrpc/svc_wq.c
@@ -257,6 +257,8 @@ svc_wq_enqueue_xprt(struct svc_xprt *xprt)
struct svc_serv *serv = xprt->xpt_server;
struct svc_rqst *rqstp;
+ trace_svc_xprt_enqueue(xprt);
+
if (!svc_xprt_has_something_to_do(xprt))
return;
@@ -290,9 +292,11 @@ out:
rqstp = find_svc_rqst(serv);
if (!rqstp) {
queue_work(serv->sv_wq, &xprt->xpt_work);
+ trace_svc_xprt_enqueued(NULL, xprt);
return;
}
rqstp->rq_xprt = xprt;
queue_work(serv->sv_wq, &rqstp->rq_work);
+ trace_svc_xprt_enqueued(rqstp, xprt);
}
EXPORT_SYMBOL_GPL(svc_wq_enqueue_xprt);
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 17398eb9f38f..c759f04c9ee9 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -242,6 +242,7 @@ void svc_add_new_perm_xprt(struct svc_serv *serv, struct svc_xprt *new)
spin_lock_bh(&serv->sv_lock);
list_add(&new->xpt_list, &serv->sv_permsocks);
spin_unlock_bh(&serv->sv_lock);
+ trace_svc_xprt_received(NULL, new);
svc_xprt_received(new);
}
@@ -329,6 +330,8 @@ void svc_xprt_do_enqueue(struct svc_xprt *xprt)
int cpu;
bool queued = false;
+ trace_svc_xprt_enqueue(xprt);
+
if (!svc_xprt_has_something_to_do(xprt))
goto out;
@@ -402,7 +405,7 @@ redo_search:
rqstp = NULL;
put_cpu();
out:
- trace_svc_xprt_do_enqueue(xprt, rqstp);
+ trace_svc_xprt_enqueued(rqstp, xprt);
}
EXPORT_SYMBOL_GPL(svc_xprt_do_enqueue);
@@ -738,6 +741,7 @@ static void svc_add_new_temp_xprt(struct svc_serv *serv, struct svc_xprt *newxpt
jiffies + svc_conn_age_period * HZ);
}
spin_unlock_bh(&serv->sv_lock);
+ trace_svc_xprt_received(NULL, newxpt);
svc_xprt_received(newxpt);
}
@@ -746,6 +750,8 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt)
struct svc_serv *serv = rqstp->rq_server;
int len = 0;
+ trace_svc_xprt_active(rqstp, xprt);
+
if (test_bit(XPT_CLOSE, &xprt->xpt_flags)) {
dprintk("svc_recv: found XPT_CLOSE\n");
svc_delete_xprt(xprt);
@@ -780,6 +786,7 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt)
atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved);
}
/* clear XPT_BUSY: */
+ trace_svc_xprt_received(rqstp, xprt);
svc_xprt_received(xprt);
out:
trace_svc_handle_xprt(xprt, len);
--
2.1.0
--
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