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NFS: Clean up generic file read tracepoints

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Clean up the generic file read tracepoints so they do pass the
full structures as arguments. Also ensure we report the number
of bytes actually read.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2020-01-06 15:25:08 -05:00 committed by Anna Schumaker
parent 0722dc9fea
commit 2343172d34
2 changed files with 34 additions and 25 deletions
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54
fs/nfs/nfstrace.h
View File

@ -820,75 +820,85 @@ TRACE_EVENT(nfs_sillyrename_unlink,
TRACE_EVENT(nfs_initiate_read,
TP_PROTO(
const struct inode *inode,
loff_t offset, unsigned long count
const struct nfs_pgio_header *hdr
),
TP_ARGS(inode, offset, count),
TP_ARGS(hdr),
TP_STRUCT__entry(
__field(loff_t, offset)
__field(unsigned long, count)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(loff_t, offset)
__field(u32, count)
),
TP_fast_assign(
const struct inode *inode = hdr->inode;
const struct nfs_inode *nfsi = NFS_I(inode);
const struct nfs_fh *fh = hdr->args.fh ?
hdr->args.fh : &nfsi->fh;
__entry->offset = offset;
__entry->count = count;
__entry->offset = hdr->args.offset;
__entry->count = hdr->args.count;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
__entry->fhandle = nfs_fhandle_hash(fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%lu",
"offset=%lld count=%u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->count
(long long)__entry->offset, __entry->count
)
);
TRACE_EVENT(nfs_readpage_done,
TP_PROTO(
const struct inode *inode,
int status, loff_t offset, bool eof
const struct rpc_task *task,
const struct nfs_pgio_header *hdr
),
TP_ARGS(inode, status, offset, eof),
TP_ARGS(task, hdr),
TP_STRUCT__entry(
__field(int, status)
__field(loff_t, offset)
__field(bool, eof)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(loff_t, offset)
__field(u32, arg_count)
__field(u32, res_count)
__field(bool, eof)
__field(int, status)
),
TP_fast_assign(
const struct inode *inode = hdr->inode;
const struct nfs_inode *nfsi = NFS_I(inode);
const struct nfs_fh *fh = hdr->args.fh ?
hdr->args.fh : &nfsi->fh;
__entry->status = status;
__entry->offset = offset;
__entry->eof = eof;
__entry->status = task->tk_status;
__entry->offset = hdr->args.offset;
__entry->arg_count = hdr->args.count;
__entry->res_count = hdr->res.count;
__entry->eof = hdr->res.eof;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
__entry->fhandle = nfs_fhandle_hash(fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld status=%d%s",
"offset=%lld count=%u res=%u status=%d%s",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->status,
(long long)__entry->offset, __entry->arg_count,
__entry->res_count, __entry->status,
__entry->eof ? " eof" : ""
)
);

5
fs/nfs/read.c
View File

@ -214,7 +214,7 @@ static void nfs_initiate_read(struct nfs_pgio_header *hdr,
task_setup_data->flags |= swap_flags;
rpc_ops->read_setup(hdr, msg);
trace_nfs_initiate_read(inode, hdr->io_start, hdr->good_bytes);
trace_nfs_initiate_read(hdr);
}
static void
@ -247,8 +247,7 @@ static int nfs_readpage_done(struct rpc_task *task,
return status;
nfs_add_stats(inode, NFSIOS_SERVERREADBYTES, hdr->res.count);
trace_nfs_readpage_done(inode, task->tk_status,
hdr->args.offset, hdr->res.eof);
trace_nfs_readpage_done(task, hdr);
if (task->tk_status == -ESTALE) {
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);