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authorChuck Lever <chuck.lever@oracle.com>2020-05-12 17:13:34 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2020-06-11 13:33:48 -0400
commit911813d7a15221362d1655d246f3502c0f898c14 (patch)
tree31a274b58e8bb4ffc7a178db699de4ad1ae3a474 /net
parentc509f15a5801605652126831d965751e8d602471 (diff)
downloadlinux-sh-911813d7a15221362d1655d246f3502c0f898c14.tar.gz
SUNRPC: Trace transport lifetime events
Refactor: Hoist create/destroy/disconnect tracepoints out of xprtrdma and into the generic RPC client. Some benefits include: - Enable tracing of xprt lifetime events for the socket transport types - Expose the different types of disconnect to help run down issues with lingering connections Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/xprt.c21
-rw-r--r--net/sunrpc/xprtrdma/transport.c8
-rw-r--r--net/sunrpc/xprtrdma/verbs.c1
3 files changed, 11 insertions, 19 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 053de053a024..d5cc5db9dbf3 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -663,6 +663,7 @@ static void xprt_autoclose(struct work_struct *work)
container_of(work, struct rpc_xprt, task_cleanup);
unsigned int pflags = memalloc_nofs_save();
+ trace_xprt_disconnect_auto(xprt);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
xprt->ops->close(xprt);
xprt_release_write(xprt, NULL);
@@ -677,7 +678,7 @@ static void xprt_autoclose(struct work_struct *work)
*/
void xprt_disconnect_done(struct rpc_xprt *xprt)
{
- dprintk("RPC: disconnected transport %p\n", xprt);
+ trace_xprt_disconnect_done(xprt);
spin_lock(&xprt->transport_lock);
xprt_clear_connected(xprt);
xprt_clear_write_space_locked(xprt);
@@ -694,6 +695,8 @@ EXPORT_SYMBOL_GPL(xprt_disconnect_done);
*/
void xprt_force_disconnect(struct rpc_xprt *xprt)
{
+ trace_xprt_disconnect_force(xprt);
+
/* Don't race with the test_bit() in xprt_clear_locked() */
spin_lock(&xprt->transport_lock);
set_bit(XPRT_CLOSE_WAIT, &xprt->state);
@@ -832,8 +835,10 @@ void xprt_connect(struct rpc_task *task)
if (!xprt_lock_write(xprt, task))
return;
- if (test_and_clear_bit(XPRT_CLOSE_WAIT, &xprt->state))
+ if (test_and_clear_bit(XPRT_CLOSE_WAIT, &xprt->state)) {
+ trace_xprt_disconnect_cleanup(xprt);
xprt->ops->close(xprt);
+ }
if (!xprt_connected(xprt)) {
task->tk_rqstp->rq_connect_cookie = xprt->connect_cookie;
@@ -1903,11 +1908,8 @@ struct rpc_xprt *xprt_create_transport(struct xprt_create *args)
found:
xprt = t->setup(args);
- if (IS_ERR(xprt)) {
- dprintk("RPC: xprt_create_transport: failed, %ld\n",
- -PTR_ERR(xprt));
+ if (IS_ERR(xprt))
goto out;
- }
if (args->flags & XPRT_CREATE_NO_IDLE_TIMEOUT)
xprt->idle_timeout = 0;
INIT_WORK(&xprt->task_cleanup, xprt_autoclose);
@@ -1928,8 +1930,7 @@ found:
rpc_xprt_debugfs_register(xprt);
- dprintk("RPC: created transport %p with %u slots\n", xprt,
- xprt->max_reqs);
+ trace_xprt_create(xprt);
out:
return xprt;
}
@@ -1939,6 +1940,8 @@ static void xprt_destroy_cb(struct work_struct *work)
struct rpc_xprt *xprt =
container_of(work, struct rpc_xprt, task_cleanup);
+ trace_xprt_destroy(xprt);
+
rpc_xprt_debugfs_unregister(xprt);
rpc_destroy_wait_queue(&xprt->binding);
rpc_destroy_wait_queue(&xprt->pending);
@@ -1963,8 +1966,6 @@ static void xprt_destroy_cb(struct work_struct *work)
*/
static void xprt_destroy(struct rpc_xprt *xprt)
{
- dprintk("RPC: destroying transport %p\n", xprt);
-
/*
* Exclude transport connect/disconnect handlers and autoclose
*/
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 659da37020a4..048c2fd85728 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -281,8 +281,6 @@ xprt_rdma_destroy(struct rpc_xprt *xprt)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
- trace_xprtrdma_op_destroy(r_xprt);
-
cancel_delayed_work_sync(&r_xprt->rx_connect_worker);
rpcrdma_xprt_disconnect(r_xprt);
@@ -365,10 +363,6 @@ xprt_setup_rdma(struct xprt_create *args)
xprt->max_payload = RPCRDMA_MAX_DATA_SEGS << PAGE_SHIFT;
- dprintk("RPC: %s: %s:%s\n", __func__,
- xprt->address_strings[RPC_DISPLAY_ADDR],
- xprt->address_strings[RPC_DISPLAY_PORT]);
- trace_xprtrdma_create(new_xprt);
return xprt;
}
@@ -385,8 +379,6 @@ void xprt_rdma_close(struct rpc_xprt *xprt)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
- trace_xprtrdma_op_close(r_xprt);
-
rpcrdma_xprt_disconnect(r_xprt);
xprt->reestablish_timeout = 0;
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 05c4d3a9cda2..2ae348377806 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -141,7 +141,6 @@ void rpcrdma_flush_disconnect(struct ib_cq *cq, struct ib_wc *wc)
if (wc->status != IB_WC_SUCCESS &&
r_xprt->rx_ep->re_connect_status == 1) {
r_xprt->rx_ep->re_connect_status = -ECONNABORTED;
- trace_xprtrdma_flush_dct(r_xprt, wc->status);
xprt_force_disconnect(xprt);
}
}