346ef8cd59
- Trace non-error loads into the access cache once, not zero times or twice. - Sometimes attr cache loads fail due to a race, in which case they are aborted leading to an invalidation; in this case, trace only the flush, not a load. MFC after: 1 month Sponsored by: Google, Inc.
121 lines
4.5 KiB
C
121 lines
4.5 KiB
C
/*-
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* Copyright (c) 2009 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed at the University of Cambridge Computer
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* Laboratory with support from a grant from Google, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NFSCLIENT_NFS_KDTRACE_H_
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#define _NFSCLIENT_NFS_KDTRACE_H_
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#ifdef KDTRACE_HOOKS
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#include <sys/dtrace_bsd.h>
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/*
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* Definitions for NFS access cache probes.
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*/
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extern uint32_t nfsclient_accesscache_flush_done_id;
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extern uint32_t nfsclient_accesscache_get_hit_id;
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extern uint32_t nfsclient_accesscache_get_miss_id;
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extern uint32_t nfsclient_accesscache_load_done_id;
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#define KDTRACE_NFS_ACCESSCACHE_FLUSH_DONE(vp) do { \
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if (dtrace_nfsclient_accesscache_flush_done_probe != NULL) \
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(dtrace_nfsclient_accesscache_flush_done_probe)( \
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nfsclient_accesscache_flush_done_id, (vp)); \
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} while (0)
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#define KDTRACE_NFS_ACCESSCACHE_GET_HIT(vp, uid, mode) do { \
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if (dtrace_nfsclient_accesscache_get_hit_probe != NULL) \
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(dtrace_nfsclient_accesscache_get_hit_probe)( \
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nfsclient_accesscache_get_hit_id, (vp), (uid), \
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(mode)); \
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} while (0)
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#define KDTRACE_NFS_ACCESSCACHE_GET_MISS(vp, uid, mode) do { \
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if (dtrace_nfsclient_accesscache_get_miss_probe != NULL) \
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(dtrace_nfsclient_accesscache_get_miss_probe)( \
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nfsclient_accesscache_get_miss_id, (vp), (uid), \
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(mode)); \
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} while (0)
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#define KDTRACE_NFS_ACCESSCACHE_LOAD_DONE(vp, uid, rmode, error) do { \
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if (dtrace_nfsclient_accesscache_load_done_probe != NULL) \
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(dtrace_nfsclient_accesscache_load_done_probe)( \
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nfsclient_accesscache_load_done_id, (vp), (uid), \
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(rmode), (error)); \
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} while (0)
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/*
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* Definitions for NFS attribute cache probes.
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*/
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extern uint32_t nfsclient_attrcache_flush_done_id;
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extern uint32_t nfsclient_attrcache_get_hit_id;
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extern uint32_t nfsclient_attrcache_get_miss_id;
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extern uint32_t nfsclient_attrcache_load_done_id;
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#define KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp) do { \
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if (dtrace_nfsclient_attrcache_flush_done_probe != NULL) \
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(dtrace_nfsclient_attrcache_flush_done_probe)( \
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nfsclient_attrcache_flush_done_id, (vp)); \
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} while (0)
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#define KDTRACE_NFS_ATTRCACHE_GET_HIT(vp, vap) do { \
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if (dtrace_nfsclient_attrcache_get_hit_probe != NULL) \
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(dtrace_nfsclient_attrcache_get_hit_probe)( \
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nfsclient_attrcache_get_hit_id, (vp), (vap)); \
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} while (0)
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#define KDTRACE_NFS_ATTRCACHE_GET_MISS(vp) do { \
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if (dtrace_nfsclient_attrcache_get_miss_probe != NULL) \
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(dtrace_nfsclient_attrcache_get_miss_probe)( \
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nfsclient_attrcache_get_miss_id, (vp)); \
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} while (0)
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#define KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, vap, error) do { \
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if (dtrace_nfsclient_attrcache_load_done_probe != NULL) \
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(dtrace_nfsclient_attrcache_load_done_probe)( \
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nfsclient_attrcache_load_done_id, (vp), (vap), \
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(error)); \
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} while (0)
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#else /* !KDTRACE_HOOKS */
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#define KDTRACE_NFS_ACCESSCACHE_FLUSH_DONE(vp)
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#define KDTRACE_NFS_ACCESSCACHE_GET_HIT(vp, uid, mode)
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#define KDTRACE_NFS_ACCESSCACHE_GET_MISS(vp, uid, mode)
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#define KDTRACE_NFS_ACCESSCACHE_LOAD_DONE(vp, uid, rmode, error)
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#define KDTRACE_NFS_ATTRCACHE_FLUSH_DONE(vp)
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#define KDTRACE_NFS_ATTRCACHE_GET_HIT(vp, vap)
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#define KDTRACE_NFS_ATTRCACHE_GET_MISS(vp)
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#define KDTRACE_NFS_ATTRCACHE_LOAD_DONE(vp, vap, error)
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#endif /* KDTRACE_HOOKS */
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#endif /* !_NFSCLIENT_NFS_KDTRACE_H_ */
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