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authorChuck Lever <chuck.lever@oracle.com>2019-11-20 16:25:52 -0500
committerTrond Myklebust <trond.myklebust@hammerspace.com>2019-11-22 19:09:38 +0100
commita264abad51d8ecb7954a2f6d9f1885b38daffc74 (patch)
tree195578c46e74e24d24f8d077e835181ce5ae4be1 /net/sunrpc
parente8d70b321ecc9b23d09b8df63e38a2f73160c209 (diff)
downloadlinux-a264abad51d8ecb7954a2f6d9f1885b38daffc74.tar.bz2
SUNRPC: Capture completion of all RPC tasks
RPC tasks on the backchannel never invoke xprt_complete_rqst(), so there is no way to report their tk_status at completion. Also, any RPC task that exits via rpc_exit_task() before it is replied to will also disappear without a trace. Introduce a trace point that is symmetrical with rpc_task_begin that captures the termination status of each RPC task. Sample trace output for callback requests initiated on the server: kworker/u8:12-448 [003] 127.025240: rpc_task_end: task:50@3 flags=ASYNC|DYNAMIC|SOFT|SOFTCONN|SENT runstate=RUNNING|ACTIVE status=0 action=rpc_exit_task kworker/u8:12-448 [002] 127.567310: rpc_task_end: task:51@3 flags=ASYNC|DYNAMIC|SOFT|SOFTCONN|SENT runstate=RUNNING|ACTIVE status=0 action=rpc_exit_task kworker/u8:12-448 [001] 130.506817: rpc_task_end: task:52@3 flags=ASYNC|DYNAMIC|SOFT|SOFTCONN|SENT runstate=RUNNING|ACTIVE status=0 action=rpc_exit_task Odd, though, that I never see trace_rpc_task_complete, either in the forward or backchannel. Should it be removed? Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/sched.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 987c4b1f0b17..9c79548c6847 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -824,6 +824,7 @@ rpc_reset_task_statistics(struct rpc_task *task)
*/
void rpc_exit_task(struct rpc_task *task)
{
+ trace_rpc_task_end(task, task->tk_action);
task->tk_action = NULL;
if (task->tk_ops->rpc_count_stats)
task->tk_ops->rpc_count_stats(task, task->tk_calldata);