linux-hardened/fs/nfsd/trace.h
Christoph Hellwig 31ef83dc05 nfsd: add trace events
For now just a few simple events to trace the layout stateid lifetime, but
these already were enough to find several bugs in the Linux client layout
stateid handling.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2015-02-02 18:09:44 +01:00

54 lines
1.4 KiB
C

/*
* 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>