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NFSv4: Add a tracepoint for CB_GETATTR 

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2015-08-20 20:07:54 -05:00
parent 6a463beb9a
commit 7cd148610a
2 changed files with 64 additions and 1 deletions
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6
fs/nfs/callback_proc.c
View File

@ -40,8 +40,11 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args,
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
inode = nfs_delegation_find_inode(cps->clp, &args->fh);
if (inode == NULL)
if (inode == NULL) {
trace_nfs4_cb_getattr(cps->clp, &args->fh, inode,
-ntohl(res->status));
goto out;
}
nfsi = NFS_I(inode);
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
@ -60,6 +63,7 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args,
res->status = 0;
out_iput:
rcu_read_unlock();
trace_nfs4_cb_getattr(cps->clp, &args->fh, inode, -ntohl(res->status));
iput(inode);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status));

59
fs/nfs/nfs4trace.h
View File

@ -884,6 +884,65 @@ DEFINE_NFS4_GETATTR_EVENT(nfs4_getattr);
DEFINE_NFS4_GETATTR_EVENT(nfs4_lookup_root);
DEFINE_NFS4_GETATTR_EVENT(nfs4_fsinfo);
DECLARE_EVENT_CLASS(nfs4_inode_callback_event,
TP_PROTO(
const struct nfs_client *clp,
const struct nfs_fh *fhandle,
const struct inode *inode,
int error
),
TP_ARGS(clp, fhandle, inode, error),
TP_STRUCT__entry(
__field(int, error)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__string(dstaddr, clp ?
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_ADDR) : "unknown")
),
TP_fast_assign(
__entry->error = error;
__entry->fhandle = nfs_fhandle_hash(fhandle);
if (inode != NULL) {
__entry->fileid = NFS_FILEID(inode);
__entry->dev = inode->i_sb->s_dev;
} else {
__entry->fileid = 0;
__entry->dev = 0;
}
__assign_str(dstaddr, clp ?
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_ADDR) : "unknown")
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"dstaddr=%s",
__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__get_str(dstaddr)
)
);
#define DEFINE_NFS4_INODE_CALLBACK_EVENT(name) \
DEFINE_EVENT(nfs4_inode_callback_event, name, \
TP_PROTO( \
const struct nfs_client *clp, \
const struct nfs_fh *fhandle, \
const struct inode *inode, \
int error \
), \
TP_ARGS(clp, fhandle, inode, error))
DEFINE_NFS4_INODE_CALLBACK_EVENT(nfs4_cb_getattr);
DECLARE_EVENT_CLASS(nfs4_idmap_event,
TP_PROTO(
const char *name,