kernel_stats.cc revision 12182
13560SN/A/* 23560SN/A * Copyright (c) 2004-2005 The Regents of The University of Michigan 33560SN/A * All rights reserved. 43560SN/A * 53560SN/A * Redistribution and use in source and binary forms, with or without 63560SN/A * modification, are permitted provided that the following conditions are 73560SN/A * met: redistributions of source code must retain the above copyright 83560SN/A * notice, this list of conditions and the following disclaimer; 93560SN/A * redistributions in binary form must reproduce the above copyright 103560SN/A * notice, this list of conditions and the following disclaimer in the 113560SN/A * documentation and/or other materials provided with the distribution; 123560SN/A * neither the name of the copyright holders nor the names of its 133560SN/A * contributors may be used to endorse or promote products derived from 143560SN/A * this software without specific prior written permission. 153560SN/A * 163560SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 173560SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 183560SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 193560SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 203560SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 213560SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 223560SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 233560SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 243560SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 253560SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 263560SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 273560SN/A * 283560SN/A * Authors: Lisa Hsu 293560SN/A * Nathan Binkert 303560SN/A */ 313560SN/A 3211793Sbrandon.potter@amd.com#include "arch/alpha/kernel_stats.hh" 3311793Sbrandon.potter@amd.com 343560SN/A#include <map> 353560SN/A#include <stack> 363560SN/A#include <string> 373560SN/A 3811793Sbrandon.potter@amd.com#include "arch/alpha/osfpal.hh" 399329Sdam.sunwoo@arm.com#include "arch/generic/linux/threadinfo.hh" 403560SN/A#include "base/trace.hh" 413560SN/A#include "cpu/thread_context.hh" 428232Snate@binkert.org#include "debug/Context.hh" 433560SN/A#include "sim/system.hh" 443560SN/A 453560SN/Ausing namespace std; 463560SN/Ausing namespace Stats; 473560SN/A 483560SN/Anamespace AlphaISA { 493560SN/Anamespace Kernel { 503560SN/A 513560SN/Aconst char *modestr[] = { "kernel", "user", "idle" }; 523560SN/A 5312181Sgabeblack@google.comStatistics::Statistics() 5412181Sgabeblack@google.com : ::Kernel::Statistics(), 5512182Sgabeblack@google.com idleProcess((Addr)-1), themode(kernel), lastModeTick(0), 5612182Sgabeblack@google.com iplLast(0), iplLastTick(0) 573560SN/A{ 583560SN/A} 593560SN/A 603560SN/Avoid 613560SN/AStatistics::regStats(const string &_name) 623560SN/A{ 633560SN/A ::Kernel::Statistics::regStats(_name); 643560SN/A 653560SN/A _callpal 663560SN/A .init(256) 673560SN/A .name(name() + ".callpal") 683560SN/A .desc("number of callpals executed") 693560SN/A .flags(total | pdf | nozero | nonan) 703560SN/A ; 713560SN/A 723560SN/A for (int i = 0; i < PAL::NumCodes; ++i) { 733560SN/A const char *str = PAL::name(i); 743560SN/A if (str) 753560SN/A _callpal.subname(i, str); 763560SN/A } 773560SN/A 783560SN/A _hwrei 793560SN/A .name(name() + ".inst.hwrei") 803560SN/A .desc("number of hwrei instructions executed") 813560SN/A ; 823560SN/A 833560SN/A _mode 843560SN/A .init(cpu_mode_num) 853560SN/A .name(name() + ".mode_switch") 863560SN/A .desc("number of protection mode switches") 873560SN/A ; 883560SN/A 893560SN/A for (int i = 0; i < cpu_mode_num; ++i) 903560SN/A _mode.subname(i, modestr[i]); 913560SN/A 923560SN/A _modeGood 933560SN/A .init(cpu_mode_num) 943560SN/A .name(name() + ".mode_good") 953560SN/A ; 963560SN/A 973560SN/A for (int i = 0; i < cpu_mode_num; ++i) 983560SN/A _modeGood.subname(i, modestr[i]); 993560SN/A 1003560SN/A _modeFraction 1013560SN/A .name(name() + ".mode_switch_good") 1023560SN/A .desc("fraction of useful protection mode switches") 1033560SN/A .flags(total) 1043560SN/A ; 1053560SN/A 1063560SN/A for (int i = 0; i < cpu_mode_num; ++i) 1073560SN/A _modeFraction.subname(i, modestr[i]); 1083560SN/A 1093560SN/A _modeFraction = _modeGood / _mode; 1103560SN/A 1113560SN/A _modeTicks 1123560SN/A .init(cpu_mode_num) 1133560SN/A .name(name() + ".mode_ticks") 1143560SN/A .desc("number of ticks spent at the given mode") 1153560SN/A .flags(pdf) 1163560SN/A ; 1173560SN/A for (int i = 0; i < cpu_mode_num; ++i) 1183560SN/A _modeTicks.subname(i, modestr[i]); 1193560SN/A 1203560SN/A _swap_context 1213560SN/A .name(name() + ".swap_context") 1223560SN/A .desc("number of times the context was actually changed") 1233560SN/A ; 12412182Sgabeblack@google.com 12512182Sgabeblack@google.com _iplCount 12612182Sgabeblack@google.com .init(32) 12712182Sgabeblack@google.com .name(name() + ".ipl_count") 12812182Sgabeblack@google.com .desc("number of times we switched to this ipl") 12912182Sgabeblack@google.com .flags(total | pdf | nozero | nonan) 13012182Sgabeblack@google.com ; 13112182Sgabeblack@google.com 13212182Sgabeblack@google.com _iplGood 13312182Sgabeblack@google.com .init(32) 13412182Sgabeblack@google.com .name(name() + ".ipl_good") 13512182Sgabeblack@google.com .desc("number of times we switched to this ipl from a different ipl") 13612182Sgabeblack@google.com .flags(total | pdf | nozero | nonan) 13712182Sgabeblack@google.com ; 13812182Sgabeblack@google.com 13912182Sgabeblack@google.com _iplTicks 14012182Sgabeblack@google.com .init(32) 14112182Sgabeblack@google.com .name(name() + ".ipl_ticks") 14212182Sgabeblack@google.com .desc("number of cycles we spent at this ipl") 14312182Sgabeblack@google.com .flags(total | pdf | nozero | nonan) 14412182Sgabeblack@google.com ; 14512182Sgabeblack@google.com 14612182Sgabeblack@google.com _iplUsed 14712182Sgabeblack@google.com .name(name() + ".ipl_used") 14812182Sgabeblack@google.com .desc("fraction of swpipl calls that actually changed the ipl") 14912182Sgabeblack@google.com .flags(total | nozero | nonan) 15012182Sgabeblack@google.com ; 15112182Sgabeblack@google.com 15212182Sgabeblack@google.com _iplUsed = _iplGood / _iplCount; 1533560SN/A} 1543560SN/A 1553560SN/Avoid 1563560SN/AStatistics::setIdleProcess(Addr idlepcbb, ThreadContext *tc) 1573560SN/A{ 1583560SN/A assert(themode == kernel); 1593560SN/A idleProcess = idlepcbb; 1603560SN/A themode = idle; 1613560SN/A changeMode(themode, tc); 1623560SN/A} 1633560SN/A 1643560SN/Avoid 1653560SN/AStatistics::changeMode(cpu_mode newmode, ThreadContext *tc) 1663560SN/A{ 1673560SN/A _mode[newmode]++; 1683560SN/A 1693560SN/A if (newmode == themode) 1703560SN/A return; 1713560SN/A 1725191Ssaidi@eecs.umich.edu DPRINTF(Context, "old mode=%s new mode=%s pid=%d\n", 1735191Ssaidi@eecs.umich.edu modestr[themode], modestr[newmode], 1745191Ssaidi@eecs.umich.edu Linux::ThreadInfo(tc).curTaskPID()); 1753560SN/A 1763560SN/A _modeGood[newmode]++; 1777823Ssteve.reinhardt@amd.com _modeTicks[themode] += curTick() - lastModeTick; 1783560SN/A 1797823Ssteve.reinhardt@amd.com lastModeTick = curTick(); 1803560SN/A themode = newmode; 1813560SN/A} 1823560SN/A 1833560SN/Avoid 1843560SN/AStatistics::mode(cpu_mode newmode, ThreadContext *tc) 1853560SN/A{ 1865568Snate@binkert.org Addr pcbb = tc->readMiscRegNoEffect(IPR_PALtemp23); 1873560SN/A 1883560SN/A if (newmode == kernel && pcbb == idleProcess) 1893560SN/A newmode = idle; 1903560SN/A 1913560SN/A changeMode(newmode, tc); 1923560SN/A} 1933560SN/A 1943560SN/Avoid 1953560SN/AStatistics::context(Addr oldpcbb, Addr newpcbb, ThreadContext *tc) 1963560SN/A{ 1973560SN/A assert(themode != user); 1983560SN/A 1993560SN/A _swap_context++; 2003560SN/A changeMode(newpcbb == idleProcess ? idle : kernel, tc); 2015191Ssaidi@eecs.umich.edu 2025191Ssaidi@eecs.umich.edu DPRINTF(Context, "Context Switch old pid=%d new pid=%d\n", 2035191Ssaidi@eecs.umich.edu Linux::ThreadInfo(tc, oldpcbb).curTaskPID(), 2045191Ssaidi@eecs.umich.edu Linux::ThreadInfo(tc, newpcbb).curTaskPID()); 2053560SN/A} 2063560SN/A 2073560SN/Avoid 2083560SN/AStatistics::callpal(int code, ThreadContext *tc) 2093560SN/A{ 2103560SN/A if (!PAL::name(code)) 2113560SN/A return; 2123560SN/A 2133560SN/A _callpal[code]++; 2143560SN/A} 2153560SN/A 2163560SN/Avoid 21712182Sgabeblack@google.comStatistics::swpipl(int ipl) 21812182Sgabeblack@google.com{ 21912182Sgabeblack@google.com assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n"); 22012182Sgabeblack@google.com 22112182Sgabeblack@google.com _iplCount[ipl]++; 22212182Sgabeblack@google.com 22312182Sgabeblack@google.com if (ipl == iplLast) 22412182Sgabeblack@google.com return; 22512182Sgabeblack@google.com 22612182Sgabeblack@google.com _iplGood[ipl]++; 22712182Sgabeblack@google.com _iplTicks[iplLast] += curTick() - iplLastTick; 22812182Sgabeblack@google.com iplLastTick = curTick(); 22912182Sgabeblack@google.com iplLast = ipl; 23012182Sgabeblack@google.com} 23112182Sgabeblack@google.com 23212182Sgabeblack@google.comvoid 23310905Sandreas.sandberg@arm.comStatistics::serialize(CheckpointOut &cp) const 2343560SN/A{ 23510905Sandreas.sandberg@arm.com ::Kernel::Statistics::serialize(cp); 2363560SN/A int exemode = themode; 2373560SN/A SERIALIZE_SCALAR(exemode); 2383560SN/A SERIALIZE_SCALAR(idleProcess); 2393560SN/A SERIALIZE_SCALAR(lastModeTick); 24012182Sgabeblack@google.com SERIALIZE_SCALAR(iplLast); 24112182Sgabeblack@google.com SERIALIZE_SCALAR(iplLastTick); 2423560SN/A} 2433560SN/A 2443560SN/Avoid 24510905Sandreas.sandberg@arm.comStatistics::unserialize(CheckpointIn &cp) 2463560SN/A{ 24710905Sandreas.sandberg@arm.com ::Kernel::Statistics::unserialize(cp); 2483560SN/A int exemode; 2493560SN/A UNSERIALIZE_SCALAR(exemode); 2503560SN/A UNSERIALIZE_SCALAR(idleProcess); 2513560SN/A UNSERIALIZE_SCALAR(lastModeTick); 2523560SN/A themode = (cpu_mode)exemode; 25312182Sgabeblack@google.com UNSERIALIZE_SCALAR(iplLast); 25412182Sgabeblack@google.com UNSERIALIZE_SCALAR(iplLastTick); 2553560SN/A} 2563560SN/A 2575568Snate@binkert.org} // namespace Kernel 2585568Snate@binkert.org} // namespace AlphaISA 259