Ksawlii/kernel_samsung_a53x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

NFSD: Trace delegation revocations

Browse source 
[ Upstream commit a1c74569bbde91299f24535abf711be5c84df9de ]

Delegation revocation is an exceptional event that is not otherwise
visible externally (eg, no network traffic is emitted). Generate a
trace record when it occurs so that revocation can be observed or
other activity can be triggered. Example:

nfsd-1104  [005]  1912.002544: nfsd_stid_revoke:        client 633c9343:4e82788d stateid 00000003:00000001 ref=2 type=DELEG

Trace infrastructure is provided for subsequent additional tracing
related to nfs4_stid activity.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chuck Lever 2022-10-28 10:47:09 -04:00 • committed by Ksawlii
parent 1f3a273889
commit a311157fbd
2 changed files with 57 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
fs/nfsd/nfs4state.c
View file

@ -1366,6 +1366,8 @@ static void revoke_delegation(struct nfs4_delegation *dp)
WARN_ON(!list_empty(&dp->dl_recall_lru)); WARN_ON(!list_empty(&dp->dl_recall_lru));
trace_nfsd_stid_revoke(&dp->dl_stid);
if (clp->cl_minorversion) { if (clp->cl_minorversion) {
spin_lock(&clp->cl_lock); spin_lock(&clp->cl_lock);
dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID; dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID;

55
fs/nfsd/trace.h
View file

@ -550,6 +550,61 @@ DEFINE_EVENT(nfsd_stateseqid_class, nfsd_##name, \
DEFINE_STATESEQID_EVENT(preprocess); DEFINE_STATESEQID_EVENT(preprocess);
DEFINE_STATESEQID_EVENT(open_confirm); DEFINE_STATESEQID_EVENT(open_confirm);
TRACE_DEFINE_ENUM(NFS4_OPEN_STID);
TRACE_DEFINE_ENUM(NFS4_LOCK_STID);
TRACE_DEFINE_ENUM(NFS4_DELEG_STID);
TRACE_DEFINE_ENUM(NFS4_CLOSED_STID);
TRACE_DEFINE_ENUM(NFS4_REVOKED_DELEG_STID);
TRACE_DEFINE_ENUM(NFS4_CLOSED_DELEG_STID);
TRACE_DEFINE_ENUM(NFS4_LAYOUT_STID);
#define show_stid_type(x) \
__print_flags(x, "|", \
{ NFS4_OPEN_STID, "OPEN" }, \
{ NFS4_LOCK_STID, "LOCK" }, \
{ NFS4_DELEG_STID, "DELEG" }, \
{ NFS4_CLOSED_STID, "CLOSED" }, \
{ NFS4_REVOKED_DELEG_STID, "REVOKED" }, \
{ NFS4_CLOSED_DELEG_STID, "CLOSED_DELEG" }, \
{ NFS4_LAYOUT_STID, "LAYOUT" })
DECLARE_EVENT_CLASS(nfsd_stid_class,
TP_PROTO(
const struct nfs4_stid *stid
),
TP_ARGS(stid),
TP_STRUCT__entry(
__field(unsigned long, sc_type)
__field(int, sc_count)
__field(u32, cl_boot)
__field(u32, cl_id)
__field(u32, si_id)
__field(u32, si_generation)
),
TP_fast_assign(
const stateid_t *stp = &stid->sc_stateid;
__entry->sc_type = stid->sc_type;
__entry->sc_count = refcount_read(&stid->sc_count);
__entry->cl_boot = stp->si_opaque.so_clid.cl_boot;
__entry->cl_id = stp->si_opaque.so_clid.cl_id;
__entry->si_id = stp->si_opaque.so_id;
__entry->si_generation = stp->si_generation;
),
TP_printk("client %08x:%08x stateid %08x:%08x ref=%d type=%s",
__entry->cl_boot, __entry->cl_id,
__entry->si_id, __entry->si_generation,
__entry->sc_count, show_stid_type(__entry->sc_type)
)
);
#define DEFINE_STID_EVENT(name) \
DEFINE_EVENT(nfsd_stid_class, nfsd_stid_##name, \
TP_PROTO(const struct nfs4_stid *stid), \
TP_ARGS(stid))
DEFINE_STID_EVENT(revoke);
DECLARE_EVENT_CLASS(nfsd_clientid_class, DECLARE_EVENT_CLASS(nfsd_clientid_class,
TP_PROTO(const clientid_t *clid), TP_PROTO(const clientid_t *clid),
TP_ARGS(clid), TP_ARGS(clid),