This is a note to let you know that I've just added the patch titled
NFSD: Add an nfsd_cb_probe tracepoint
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfsd-add-an-nfsd_cb_probe-tracepoint.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit cb8607c7839e1f042c3d4faee99c7aee00cac340
Author: Chuck Lever <chuck.lever@xxxxxxxxxx>
Date: Fri May 14 15:57:26 2021 -0400
NFSD: Add an nfsd_cb_probe tracepoint
[ Upstream commit 4ade892ae1c35527584decb7fa026553d53cd03f ]
Record a tracepoint event when the server performs a callback
probe. This event can be enabled as a group with other nfsd_cb
tracepoints.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index fe1f36b70fa03..453f60b127ebb 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -1000,6 +1000,7 @@ static const struct rpc_call_ops nfsd4_cb_probe_ops = {
*/
void nfsd4_probe_callback(struct nfs4_client *clp)
{
+ trace_nfsd_cb_probe(clp);
nfsd4_mark_cb_state(clp, NFSD4_CB_UNKNOWN);
set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags);
nfsd4_run_cb(&clp->cl_cb_null);
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 9061fd28c996d..4361a0807f070 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -910,6 +910,7 @@ DEFINE_EVENT(nfsd_cb_class, nfsd_cb_##name, \
TP_ARGS(clp))
DEFINE_NFSD_CB_EVENT(state);
+DEFINE_NFSD_CB_EVENT(probe);
DEFINE_NFSD_CB_EVENT(lost);
DEFINE_NFSD_CB_EVENT(shutdown);
