90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
/* $NetBSD: iscsi_profile.h,v 1.1 2011/10/23 21:15:02 agc Exp $ */
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/*-
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* Copyright (c) 2005,2006,2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Wasabi Systems, 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef ISCSI_PERFTEST
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command_perf_t *perfdata;
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int perf_active;
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void perf_begin_command(ccb_t *, int);
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void perf_end_command(ccb_t *);
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void perf_start(iscsi_perf_startstop_parameters_t *);
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void perf_stop(iscsi_perf_startstop_parameters_t *);
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void perf_get(iscsi_perf_get_parameters_t *);
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static __inline void
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perf_snap(int index, perfpoint_t which)
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{
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uint64_t rv;
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__asm __volatile("rdtsc":"=A"(rv));
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perfdata[index - 1].pctr[which] = rv;
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}
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static __inline void
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perf_snapcond(int index, perfpoint_t which)
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{
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uint64_t *pdst = &perfdata[index - 1].pctr[which];
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uint64_t rv;
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if (!*pdst) {
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__asm __volatile("rdtsc":"=A"(rv));
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*pdst = rv;
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}
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}
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#define PERF_BEGIN(ccb, nowait) if (perf_active) perf_begin_command(ccb, nowait)
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#define PERF_END(ccb) if (ccb->perf_index) perf_end_command(ccb)
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#define PERF_SNAP(ccb,which) if (ccb->perf_index) \
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perf_snap(ccb->perf_index,which)
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#define PERF_SNAPC(ccb,which) if (ccb->perf_index) \
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perf_snapcond(ccb->perf_index,which)
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#define PERF_PDUSNAPB(pdu) if (pdu->perf_index) \
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perf_snapcond(pdu->perf_index,pdu->perf_which)
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#define PERF_PDUSNAPE(pdu) if (pdu->perf_index) \
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perf_snap(pdu->perf_index,pdu->perf_which+1)
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#define PERF_PDUSET(pdu,ccb,which) {pdu->perf_index = ccb->perf_index; \
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pdu->perf_which = which;}
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#else
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#define PERF_BEGIN(ccb, nowait)
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#define PERF_END(ccb)
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#define PERF_SNAP(ccb,which)
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#define PERF_SNAPC(ccb,which)
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#define PERF_PDUSNAPB(pdu)
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#define PERF_PDUSNAPE(pdu)
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#define PERF_PDUSET(pdu,ccb,which)
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#endif
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