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NFSv4.1: Add tracepoints for debugging layoutget/return/commit 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-08-14 16:36:51 -04:00
parent cc668ab30b
commit 1037e6eaa3
2 changed files with 61 additions and 0 deletions
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6
fs/nfs/nfs4proc.c
View File

@ -6860,6 +6860,10 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
status = nfs4_wait_for_completion_rpc_task(task);
if (status == 0)
status = task->tk_status;
trace_nfs4_layoutget(lgp->args.ctx,
&lgp->args.range,
&lgp->res.range,
status);
/* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
if (status == 0 && lgp->res.layoutp->len)
lseg = pnfs_layout_process(lgp);
@ -6945,6 +6949,7 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
if (IS_ERR(task))
return PTR_ERR(task);
status = task->tk_status;
trace_nfs4_layoutreturn(lrp->args.inode, status);
dprintk("<-- %s status=%d\n", __func__, status);
rpc_put_task(task);
return status;
@ -7131,6 +7136,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
if (status != 0)
goto out;
status = task->tk_status;
trace_nfs4_layoutcommit(data->args.inode, status);
out:
dprintk("%s: status %d\n", __func__, status);
rpc_put_task(task);

55
fs/nfs/nfs4trace.h
View File

@ -894,6 +894,61 @@ DECLARE_EVENT_CLASS(nfs4_commit_event,
DEFINE_NFS4_COMMIT_EVENT(nfs4_commit);
#ifdef CONFIG_NFS_V4_1
DEFINE_NFS4_COMMIT_EVENT(nfs4_pnfs_commit_ds);
#define show_pnfs_iomode(iomode) \
__print_symbolic(iomode, \
{ IOMODE_READ, "READ" }, \
{ IOMODE_RW, "RW" }, \
{ IOMODE_ANY, "ANY" })
TRACE_EVENT(nfs4_layoutget,
TP_PROTO(
const struct nfs_open_context *ctx,
const struct pnfs_layout_range *args,
const struct pnfs_layout_range *res,
int error
),
TP_ARGS(ctx, args, res, error),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(u32, iomode)
__field(u64, offset)
__field(u64, count)
__field(int, error)
),
TP_fast_assign(
const struct inode *inode = ctx->dentry->d_inode;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
__entry->iomode = args->iomode;
__entry->offset = args->offset;
__entry->count = args->length;
__entry->error = error;
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"iomode=%s offset=%llu count=%llu",
__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
show_pnfs_iomode(__entry->iomode),
(unsigned long long)__entry->offset,
(unsigned long long)__entry->count
)
);
DEFINE_NFS4_INODE_EVENT(nfs4_layoutcommit);
DEFINE_NFS4_INODE_EVENT(nfs4_layoutreturn);
#endif /* CONFIG_NFS_V4_1 */
#endif /* _TRACE_NFS4_H */