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NFSv4.2 add tracepoint to SEEK

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Add a tracepoint to the SEEK operation.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Olga Kornievskaia 2021-11-04 10:57:08 -04:00 committed by Trond Myklebust
parent 17f09d3f61
commit f628d462b3
2 changed files with 75 additions and 0 deletions
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1
fs/nfs/nfs42proc.c
View file

@ -678,6 +678,7 @@ static loff_t _nfs42_proc_llseek(struct file *filep,
status = nfs4_call_sync(server->client, server, &msg,
&args.seq_args, &res.seq_res, 0);
trace_nfs4_llseek(inode, &args, &res, status);
if (status == -ENOTSUPP)
server->caps &= ~NFS_CAP_SEEK;
if (status)

74
fs/nfs/nfs4trace.h
View file

@ -2054,6 +2054,80 @@ TRACE_EVENT(ff_layout_commit_error,
)
);
TRACE_DEFINE_ENUM(NFS4_CONTENT_DATA);
TRACE_DEFINE_ENUM(NFS4_CONTENT_HOLE);
#define show_llseek_mode(what) \
__print_symbolic(what, \
{ NFS4_CONTENT_DATA, "DATA" }, \
{ NFS4_CONTENT_HOLE, "HOLE" })
#ifdef CONFIG_NFS_V4_2
TRACE_EVENT(nfs4_llseek,
TP_PROTO(
const struct inode *inode,
const struct nfs42_seek_args *args,
const struct nfs42_seek_res *res,
int error
),
TP_ARGS(inode, args, res, error),
TP_STRUCT__entry(
__field(unsigned long, error)
__field(u32, fhandle)
__field(u32, fileid)
__field(dev_t, dev)
__field(int, stateid_seq)
__field(u32, stateid_hash)
__field(loff_t, offset_s)
__field(u32, what)
__field(loff_t, offset_r)
__field(u32, eof)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
const struct nfs_fh *fh = args->sa_fh;
__entry->fileid = nfsi->fileid;
__entry->dev = inode->i_sb->s_dev;
__entry->fhandle = nfs_fhandle_hash(fh);
__entry->offset_s = args->sa_offset;
__entry->stateid_seq =
be32_to_cpu(args->sa_stateid.seqid);
__entry->stateid_hash =
nfs_stateid_hash(&args->sa_stateid);
__entry->what = args->sa_what;
if (error) {
__entry->error = -error;
__entry->offset_r = 0;
__entry->eof = 0;
} else {
__entry->error = 0;
__entry->offset_r = res->sr_offset;
__entry->eof = res->sr_eof;
}
),
TP_printk(
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"stateid=%d:0x%08x offset_s=%llu what=%s "
"offset_r=%llu eof=%u",
-__entry->error,
show_nfs4_status(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->stateid_seq, __entry->stateid_hash,
__entry->offset_s,
show_llseek_mode(__entry->what),
__entry->offset_r,
__entry->eof
)
);
#endif /* CONFIG_NFS_V4_2 */
#endif /* CONFIG_NFS_V4_1 */