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NFSv4: Add tracepoints for debugging file open
Set up basic tracepoints for debugging NFSv4 file open/close Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
parent
c6d01c6f9b
commit
42113a7539
2 changed files with 129 additions and 0 deletions
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@ -1442,6 +1442,7 @@ static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
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int err;
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do {
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err = _nfs4_do_open_reclaim(ctx, state);
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trace_nfs4_open_reclaim(ctx, 0, err);
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if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
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continue;
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if (err != -NFS4ERR_DELAY)
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@ -1897,6 +1898,7 @@ static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state
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do {
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err = _nfs4_open_expired(ctx, state);
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trace_nfs4_open_expired(ctx, 0, err);
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if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
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continue;
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switch (err) {
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@ -2199,6 +2201,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir,
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do {
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status = _nfs4_do_open(dir, ctx, flags, sattr, label);
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res = ctx->state;
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trace_nfs4_open_file(ctx, flags, status);
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if (status == 0)
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break;
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/* NOTE: BAD_SEQID means the server and client disagree about the
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@ -2389,6 +2392,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
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dprintk("%s: begin!\n", __func__);
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if (!nfs4_sequence_done(task, &calldata->res.seq_res))
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return;
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trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
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/* hmm. we are done with the inode, and in the process of freeing
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* the state_owner. we keep this around to process errors
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*/
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@ -161,6 +161,19 @@
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{ -NFS4ERR_WRONG_TYPE, "WRONG_TYPE" }, \
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{ -NFS4ERR_XDEV, "XDEV" })
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#define show_open_flags(flags) \
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__print_flags(flags, "|", \
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{ O_CREAT, "O_CREAT" }, \
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{ O_EXCL, "O_EXCL" }, \
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{ O_TRUNC, "O_TRUNC" }, \
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{ O_DIRECT, "O_DIRECT" })
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#define show_fmode_flags(mode) \
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__print_flags(mode, "|", \
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{ ((__force unsigned long)FMODE_READ), "READ" }, \
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{ ((__force unsigned long)FMODE_WRITE), "WRITE" }, \
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{ ((__force unsigned long)FMODE_EXEC), "EXEC" })
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DECLARE_EVENT_CLASS(nfs4_clientid_event,
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TP_PROTO(
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const struct nfs_client *clp,
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@ -211,6 +224,118 @@ DEFINE_NFS4_CLIENTID_EVENT(nfs4_sequence);
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DEFINE_NFS4_CLIENTID_EVENT(nfs4_reclaim_complete);
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#endif /* CONFIG_NFS_V4_1 */
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DECLARE_EVENT_CLASS(nfs4_open_event,
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TP_PROTO(
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const struct nfs_open_context *ctx,
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int flags,
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int error
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),
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TP_ARGS(ctx, flags, error),
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TP_STRUCT__entry(
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__field(int, error)
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__field(unsigned int, flags)
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__field(unsigned int, fmode)
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__field(dev_t, dev)
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__field(u32, fhandle)
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__field(u64, fileid)
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__field(u64, dir)
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__string(name, ctx->dentry->d_name.name)
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),
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TP_fast_assign(
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const struct nfs4_state *state = ctx->state;
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const struct inode *inode = NULL;
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__entry->error = error;
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__entry->flags = flags;
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__entry->fmode = (__force unsigned int)ctx->mode;
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__entry->dev = ctx->dentry->d_sb->s_dev;
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if (!IS_ERR(state))
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inode = state->inode;
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if (inode != NULL) {
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__entry->fileid = NFS_FILEID(inode);
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__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
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} else {
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__entry->fileid = 0;
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__entry->fhandle = 0;
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}
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__entry->dir = NFS_FILEID(ctx->dentry->d_parent->d_inode);
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__assign_str(name, ctx->dentry->d_name.name);
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),
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TP_printk(
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"error=%d (%s) flags=%d (%s) fmode=%s "
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"fileid=%02x:%02x:%llu fhandle=0x%08x "
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"name=%02x:%02x:%llu/%s",
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__entry->error,
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show_nfsv4_errors(__entry->error),
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__entry->flags,
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show_open_flags(__entry->flags),
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show_fmode_flags(__entry->fmode),
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MAJOR(__entry->dev), MINOR(__entry->dev),
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(unsigned long long)__entry->fileid,
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__entry->fhandle,
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MAJOR(__entry->dev), MINOR(__entry->dev),
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(unsigned long long)__entry->dir,
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__get_str(name)
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)
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);
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#define DEFINE_NFS4_OPEN_EVENT(name) \
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DEFINE_EVENT(nfs4_open_event, name, \
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TP_PROTO( \
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const struct nfs_open_context *ctx, \
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int flags, \
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int error \
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), \
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TP_ARGS(ctx, flags, error))
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DEFINE_NFS4_OPEN_EVENT(nfs4_open_reclaim);
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DEFINE_NFS4_OPEN_EVENT(nfs4_open_expired);
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DEFINE_NFS4_OPEN_EVENT(nfs4_open_file);
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TRACE_EVENT(nfs4_close,
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TP_PROTO(
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const struct nfs4_state *state,
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const struct nfs_closeargs *args,
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const struct nfs_closeres *res,
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int error
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),
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TP_ARGS(state, args, res, error),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(u32, fhandle)
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__field(u64, fileid)
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__field(unsigned int, fmode)
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__field(int, error)
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),
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TP_fast_assign(
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const struct inode *inode = state->inode;
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__entry->dev = inode->i_sb->s_dev;
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__entry->fileid = NFS_FILEID(inode);
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__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
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__entry->fmode = (__force unsigned int)state->state;
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__entry->error = error;
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),
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TP_printk(
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"error=%d (%s) fmode=%s fileid=%02x:%02x:%llu "
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"fhandle=0x%08x",
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__entry->error,
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show_nfsv4_errors(__entry->error),
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__entry->fmode ? show_fmode_flags(__entry->fmode) :
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"closed",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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(unsigned long long)__entry->fileid,
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__entry->fhandle
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)
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);
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#endif /* _TRACE_NFS4_H */
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#undef TRACE_INCLUDE_PATH
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