SUNRPC: Add a trace point in svc_xprt_deferred_close

The trace point in svc_xprt_close() reports only some local close
requests. Try to capture more local close requests.

Note that "trace-cmd record -T -e sunrpc:svc_xprt_close" will
neatly capture the identity of the caller requesting the close.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index dd86d7f..d3735ab 100644 (file)
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -157,6 +157,7 @@ int svc_print_xprts(char *buf, int maxlen)
  */
 void svc_xprt_deferred_close(struct svc_xprt *xprt)
 {
+       trace_svc_xprt_close(xprt);
        if (!test_and_set_bit(XPT_CLOSE, &xprt->xpt_flags))
                svc_xprt_enqueue(xprt);
 }