From aaba72cd4e793fbf1c04e06dee3d2c3710339678 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 27 Mar 2018 10:51:39 -0400 Subject: sunrpc: Report per-RPC execution stats Introduce a mechanism to report the server-side execution latency of each RPC. The goal is to enable user space to filter the trace record for latency outliers, build histograms, etc. Signed-off-by: Chuck Lever Signed-off-by: J. Bruce Fields --- net/sunrpc/svc_xprt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net') diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index f745754a55ea..a7425da14f5b 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -782,7 +782,7 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt) len = svc_deferred_recv(rqstp); else len = xprt->xpt_ops->xpo_recvfrom(rqstp); - dprintk("svc: got len=%d\n", len); + rqstp->rq_stime = ktime_get(); rqstp->rq_reserved = serv->sv_max_mesg; atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved); } @@ -888,6 +888,7 @@ int svc_send(struct svc_rqst *rqstp) /* Grab mutex to serialize outgoing data. */ mutex_lock(&xprt->xpt_mutex); + trace_svc_stats_latency(rqstp); if (test_bit(XPT_DEAD, &xprt->xpt_flags) || test_bit(XPT_CLOSE, &xprt->xpt_flags)) len = -ENOTCONN; -- cgit v1.2.1