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NFSD: Add an nfsd_cb_probe tracepoint

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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@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Chuck Lever 2021-05-14 15:57:26 -04:00 committed by J. Bruce Fields
parent 17d76ddf76
commit 4ade892ae1
2 changed files with 2 additions and 0 deletions
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1
fs/nfsd/nfs4callback.c
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@ -998,6 +998,7 @@ 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);

1
fs/nfsd/trace.h
View file

@ -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);