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| author | Christoph Hellwig <hch@lst.de> | 2014-08-17 02:02:22 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2015-02-02 18:09:44 +0100 |
| commit | 31ef83dc053835fc14741426e20c60dbbba8c13d (patch) | |
| tree | 8c9a1cac8a5e29fa07b476d705d09ca0f79e40ee /fs/nfsd/trace.h | |
| parent | nfsd: update documentation for pNFS support (diff) | |
| download | linux-31ef83dc053835fc14741426e20c60dbbba8c13d.tar.xz linux-31ef83dc053835fc14741426e20c60dbbba8c13d.zip | |
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>
Diffstat (limited to 'fs/nfsd/trace.h')
| -rw-r--r-- | fs/nfsd/trace.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h new file mode 100644 index 000000000000..c668520c344b --- /dev/null +++ b/fs/nfsd/trace.h @@ -0,0 +1,54 @@ +/* + * 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> |