kernel_stats.cc revision 12181:2150eff234c1
1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Lisa Hsu 29 * Nathan Binkert 30 */ 31 32#include <string> 33 34#include "base/trace.hh" 35#include "cpu/thread_context.hh" 36#include "kern/kernel_stats.hh" 37#include "sim/system.hh" 38 39using namespace std; 40using namespace Stats; 41 42namespace Kernel { 43 44Statistics::Statistics() 45 : iplLast(0), iplLastTick(0) 46{ 47} 48 49void 50Statistics::regStats(const string &_name) 51{ 52 myname = _name; 53 54 _arm 55 .name(name() + ".inst.arm") 56 .desc("number of arm instructions executed") 57 ; 58 59 _quiesce 60 .name(name() + ".inst.quiesce") 61 .desc("number of quiesce instructions executed") 62 ; 63 64 _iplCount 65 .init(32) 66 .name(name() + ".ipl_count") 67 .desc("number of times we switched to this ipl") 68 .flags(total | pdf | nozero | nonan) 69 ; 70 71 _iplGood 72 .init(32) 73 .name(name() + ".ipl_good") 74 .desc("number of times we switched to this ipl from a different ipl") 75 .flags(total | pdf | nozero | nonan) 76 ; 77 78 _iplTicks 79 .init(32) 80 .name(name() + ".ipl_ticks") 81 .desc("number of cycles we spent at this ipl") 82 .flags(total | pdf | nozero | nonan) 83 ; 84 85 _iplUsed 86 .name(name() + ".ipl_used") 87 .desc("fraction of swpipl calls that actually changed the ipl") 88 .flags(total | nozero | nonan) 89 ; 90 91 _iplUsed = _iplGood / _iplCount; 92} 93 94void 95Statistics::swpipl(int ipl) 96{ 97 assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n"); 98 99 _iplCount[ipl]++; 100 101 if (ipl == iplLast) 102 return; 103 104 _iplGood[ipl]++; 105 _iplTicks[iplLast] += curTick() - iplLastTick; 106 iplLastTick = curTick(); 107 iplLast = ipl; 108} 109 110void 111Statistics::serialize(CheckpointOut &cp) const 112{ 113 SERIALIZE_SCALAR(iplLast); 114 SERIALIZE_SCALAR(iplLastTick); 115} 116 117void 118Statistics::unserialize(CheckpointIn &cp) 119{ 120 UNSERIALIZE_SCALAR(iplLast); 121 UNSERIALIZE_SCALAR(iplLastTick); 122} 123 124} // namespace Kernel 125