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svcrdma: trace cc_release calls

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This event brackets the svcrdma_post_* trace points. If this trace
event is enabled but does not appear as expected, that indicates a
chunk_ctxt leak.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-06-12 10:13:51 -04:00
parent 91f8ce2846
commit a23c76e92d
2 changed files with 10 additions and 0 deletions
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8
include/trace/events/rpcrdma.h
View File

@ -2112,6 +2112,14 @@ DEFINE_POST_CHUNK_EVENT(read);
DEFINE_POST_CHUNK_EVENT(write);
DEFINE_POST_CHUNK_EVENT(reply);
DEFINE_EVENT(svcrdma_post_chunk_class, svcrdma_cc_release,
TP_PROTO(
const struct rpc_rdma_cid *cid,
int sqecount
),
TP_ARGS(cid, sqecount)
);
TRACE_EVENT(svcrdma_wc_read,
TP_PROTO(
const struct ib_wc *wc,

2
net/sunrpc/xprtrdma/svc_rdma_rw.c
View File

@ -191,6 +191,8 @@ static void svc_rdma_cc_release(struct svc_rdma_chunk_ctxt *cc,
struct svc_rdma_rw_ctxt *ctxt;
LLIST_HEAD(free);
trace_svcrdma_cc_release(&cc->cc_cid, cc->cc_sqecount);
first = last = NULL;
while ((ctxt = svc_rdma_next_ctxt(&cc->cc_rwctxts)) != NULL) {
list_del(&ctxt->rw_list);