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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-06-24 10:55:46 -0400
committerJ. Bruce Fields <bfields@redhat.com>2016-07-13 15:53:43 -0400
commit104f6351f7dc0036575b4e47765d6d39c757c066 (patch)
treee919bf3518ae0370aa0c6736556fc49b7abbd5ac /net/sunrpc
parent82ea2d7615309d755579d609ad9c11daea25d0cc (diff)
SUNRPC: Add tracepoints for dropped and deferred requests
Dropping and/or deferring requests has an impact on performance. Let's make sure we can trace those events. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/svc_xprt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index 4d2189a562af..e7082a4aeb56 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -875,6 +875,7 @@ EXPORT_SYMBOL_GPL(svc_recv);
*/
void svc_drop(struct svc_rqst *rqstp)
{
+ trace_svc_drop(rqstp);
dprintk("svc: xprt %p dropped request\n", rqstp->rq_xprt);
svc_xprt_release(rqstp);
}
@@ -1152,6 +1153,7 @@ static void svc_revisit(struct cache_deferred_req *dreq, int too_many)
spin_unlock(&xprt->xpt_lock);
dprintk("revisit canceled\n");
svc_xprt_put(xprt);
+ trace_svc_drop_deferred(dr);
kfree(dr);
return;
}
@@ -1209,6 +1211,7 @@ static struct cache_deferred_req *svc_defer(struct cache_req *req)
set_bit(RQ_DROPME, &rqstp->rq_flags);
dr->handle.revisit = svc_revisit;
+ trace_svc_defer(rqstp);
return &dr->handle;
}
@@ -1249,6 +1252,7 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_xprt *xprt)
struct svc_deferred_req,
handle.recent);
list_del_init(&dr->handle.recent);
+ trace_svc_revisit_deferred(dr);
} else
clear_bit(XPT_DEFERRED, &xprt->xpt_flags);
spin_unlock(&xprt->xpt_lock);