1. 根目录:
2. fs
3. nfsd
4. trace.h

/*
 * Copyright (c) 2014 Christoph Hellwig.
 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM nfsd

#if !defined(_NFSD_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _NFSD_TRACE_H

#include <linux/tracepoint.h>

DECLARE_EVENT_CLASS(nfsd_stateid_class,
	TP_PROTO(stateid_t *stp),
	TP_ARGS(stp),
	TP_STRUCT__entry(
		__field(u32, cl_boot)
		__field(u32, cl_id)
		__field(u32, si_id)
		__field(u32, si_generation)
	),
	TP_fast_assign(
		__entry->cl_boot = stp->si_opaque.so_clid.cl_boot;
		__entry->cl_id = stp->si_opaque.so_clid.cl_id;
		__entry->si_id = stp->si_opaque.so_id;
		__entry->si_generation = stp->si_generation;
	),
	TP_printk("client %08x:%08x stateid %08x:%08x",
		__entry->cl_boot,
		__entry->cl_id,
		__entry->si_id,
		__entry->si_generation)
)

#define DEFINE_STATEID_EVENT(name) \
DEFINE_EVENT(nfsd_stateid_class, name, \
	TP_PROTO(stateid_t *stp), \
	TP_ARGS(stp))
DEFINE_STATEID_EVENT(layoutstate_alloc);
DEFINE_STATEID_EVENT(layoutstate_unhash);
DEFINE_STATEID_EVENT(layoutstate_free);
DEFINE_STATEID_EVENT(layout_get_lookup_fail);
DEFINE_STATEID_EVENT(layout_commit_lookup_fail);
DEFINE_STATEID_EVENT(layout_return_lookup_fail);
DEFINE_STATEID_EVENT(layout_recall);
DEFINE_STATEID_EVENT(layout_recall_done);
DEFINE_STATEID_EVENT(layout_recall_fail);
DEFINE_STATEID_EVENT(layout_recall_release);

#endif /* _NFSD_TRACE_H */

#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>