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NFS: Add a tracepoint in nfs_set_pgio_error() 

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2020-05-12 17:14:11 -04:00 committed by Anna Schumaker
parent fd2b612141
commit cd2ed9bdc0
2 changed files with 46 additions and 0 deletions
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44
fs/nfs/nfstrace.h
View File

@ -1008,6 +1008,50 @@ TRACE_EVENT(nfs_readpage_short,
)
);
TRACE_EVENT(nfs_pgio_error,
TP_PROTO(
const struct nfs_pgio_header *hdr,
int error,
loff_t pos
),
TP_ARGS(hdr, error, pos),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(loff_t, offset)
__field(u32, arg_count)
__field(u32, res_count)
__field(loff_t, pos)
__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 = error;
__entry->offset = hdr->args.offset;
__entry->arg_count = hdr->args.count;
__entry->res_count = hdr->res.count;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(fh);
),
TP_printk("fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%u res=%u pos=%llu status=%d",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid, __entry->fhandle,
(long long)__entry->offset, __entry->arg_count, __entry->res_count,
__entry->pos, __entry->status
)
);
TRACE_DEFINE_ENUM(NFS_UNSTABLE);
TRACE_DEFINE_ENUM(NFS_DATA_SYNC);
TRACE_DEFINE_ENUM(NFS_FILE_SYNC);

2
fs/nfs/pagelist.c
View File

@ -24,6 +24,7 @@
#include "internal.h"
#include "pnfs.h"
#include "nfstrace.h"
#define NFSDBG_FACILITY NFSDBG_PAGECACHE
@ -64,6 +65,7 @@ void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
{
unsigned int new = pos - hdr->io_start;
trace_nfs_pgio_error(hdr, error, pos);
if (hdr->good_bytes > new) {
hdr->good_bytes = new;
clear_bit(NFS_IOHDR_EOF, &hdr->flags);