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linux-next/fs/nfsd/trace.h
Jeff Layton 6e8b50d16a nfsd: add new io class tracepoint
Add some new tracepoints in the nfsd read/write codepaths. The idea
is that this will give us the ability to measure how long each phase of
a read or write operation takes.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2016-01-14 17:32:51 -05:00

98 lines
2.5 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>
#include "nfsfh.h"
DECLARE_EVENT_CLASS(nfsd_io_class,
TP_PROTO(struct svc_rqst *rqstp,
struct svc_fh *fhp,
loff_t offset,
int len),
TP_ARGS(rqstp, fhp, offset, len),
TP_STRUCT__entry(
__field(__be32, xid)
__field_struct(struct knfsd_fh, fh)
__field(loff_t, offset)
__field(int, len)
),
TP_fast_assign(
__entry->xid = rqstp->rq_xid,
fh_copy_shallow(&__entry->fh, &fhp->fh_handle);
__entry->offset = offset;
__entry->len = len;
),
TP_printk("xid=0x%x fh=0x%x offset=%lld len=%d",
__be32_to_cpu(__entry->xid), knfsd_fh_hash(&__entry->fh),
__entry->offset, __entry->len)
)
#define DEFINE_NFSD_IO_EVENT(name) \
DEFINE_EVENT(nfsd_io_class, name, \
TP_PROTO(struct svc_rqst *rqstp, \
struct svc_fh *fhp, \
loff_t offset, \
int len), \
TP_ARGS(rqstp, fhp, offset, len))
DEFINE_NFSD_IO_EVENT(read_start);
DEFINE_NFSD_IO_EVENT(read_opened);
DEFINE_NFSD_IO_EVENT(read_io_done);
DEFINE_NFSD_IO_EVENT(read_done);
DEFINE_NFSD_IO_EVENT(write_start);
DEFINE_NFSD_IO_EVENT(write_opened);
DEFINE_NFSD_IO_EVENT(write_io_done);
DEFINE_NFSD_IO_EVENT(write_done);
#include "state.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>