src/kern/kernel_stats.cc - arm/gem5 - Git at Google

 /*
  * Copyright (c) 2004-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met: redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer;
  * redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution;
  * neither the name of the copyright holders nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include <map>
 #include <stack>
 #include <string>

 #include "arch/alpha/osfpal.hh"
 #include "base/trace.hh"
 #include "cpu/exec_context.hh"
 #include "kern/kernel_stats.hh"
 #include "kern/tru64/tru64_syscalls.hh"
 #include "sim/system.hh"

 using namespace std;
 using namespace Stats;

 namespace Kernel {

 const char *modestr[] = { "kernel", "user", "idle", "interrupt" };

 Statistics::Statistics(System *system)
     : idleProcess((Addr)-1), themode(kernel), lastModeTick(0),
       iplLast(0), iplLastTick(0)
 {
     bin_int = system->params()->bin_int;
 }

 void
 Statistics::regStats(const string &_name)
 {
     myname = _name;

     _arm
         .name(name() + ".inst.arm")
         .desc("number of arm instructions executed")
         ;

     _quiesce
         .name(name() + ".inst.quiesce")
         .desc("number of quiesce instructions executed")
         ;

     _ivlb
         .name(name() + ".inst.ivlb")
         .desc("number of ivlb instructions executed")
         ;

     _ivle
         .name(name() + ".inst.ivle")
         .desc("number of ivle instructions executed")
         ;

     _hwrei
         .name(name() + ".inst.hwrei")
         .desc("number of hwrei instructions executed")
         ;

     _iplCount
         .init(32)
         .name(name() + ".ipl_count")
         .desc("number of times we switched to this ipl")
         .flags(total | pdf | nozero | nonan)
         ;

     _iplGood
         .init(32)
         .name(name() + ".ipl_good")
         .desc("number of times we switched to this ipl from a different ipl")
         .flags(total | pdf | nozero | nonan)
         ;

     _iplTicks
         .init(32)
         .name(name() + ".ipl_ticks")
         .desc("number of cycles we spent at this ipl")
         .flags(total | pdf | nozero | nonan)
         ;

     _iplUsed
         .name(name() + ".ipl_used")
         .desc("fraction of swpipl calls that actually changed the ipl")
         .flags(total | nozero | nonan)
         ;

     _iplUsed = _iplGood / _iplCount;

     _callpal
         .init(256)
         .name(name() + ".callpal")
         .desc("number of callpals executed")
         .flags(total | pdf | nozero | nonan)
         ;

     for (int i = 0; i < PAL::NumCodes; ++i) {
         const char *str = PAL::name(i);
         if (str)
             _callpal.subname(i, str);
     }

     _syscall
         .init(SystemCalls<Tru64>::Number)
         .name(name() + ".syscall")
         .desc("number of syscalls executed")
         .flags(total | pdf | nozero | nonan)
         ;

     for (int i = 0; i < SystemCalls<Tru64>::Number; ++i) {
         const char *str = SystemCalls<Tru64>::name(i);
         if (str) {
             _syscall.subname(i, str);
         }
     }

     _mode
         .init(cpu_mode_num)
         .name(name() + ".mode_switch")
         .desc("number of protection mode switches")
         ;

     for (int i = 0; i < cpu_mode_num; ++i)
         _mode.subname(i, modestr[i]);

     _modeGood
         .init(cpu_mode_num)
         .name(name() + ".mode_good")
         ;

     for (int i = 0; i < cpu_mode_num; ++i)
         _modeGood.subname(i, modestr[i]);

     _modeFraction
         .name(name() + ".mode_switch_good")
         .desc("fraction of useful protection mode switches")
         .flags(total)
         ;

     for (int i = 0; i < cpu_mode_num; ++i)
         _modeFraction.subname(i, modestr[i]);

     _modeFraction = _modeGood / _mode;

     _modeTicks
         .init(cpu_mode_num)
         .name(name() + ".mode_ticks")
         .desc("number of ticks spent at the given mode")
         .flags(pdf)
         ;
     for (int i = 0; i < cpu_mode_num; ++i)
         _modeTicks.subname(i, modestr[i]);

     _swap_context
         .name(name() + ".swap_context")
         .desc("number of times the context was actually changed")
         ;
 }

 void
 Statistics::setIdleProcess(Addr idlepcbb, ExecContext *xc)
 {
     assert(themode == kernel || themode == interrupt);
     idleProcess = idlepcbb;
     themode = idle;
     changeMode(themode, xc);
 }

 void
 Statistics::changeMode(cpu_mode newmode, ExecContext *xc)
 {
     _mode[newmode]++;

     if (newmode == themode)
         return;

     DPRINTF(Context, "old mode=%-8s new mode=%-8s\n",
             modestr[themode], modestr[newmode]);

     _modeGood[newmode]++;
     _modeTicks[themode] += curTick - lastModeTick;

     xc->getSystemPtr()->kernelBinning->changeMode(newmode);

     lastModeTick = curTick;
     themode = newmode;
 }

 void
 Statistics::swpipl(int ipl)
 {
     assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n");

     _iplCount[ipl]++;

     if (ipl == iplLast)
         return;

     _iplGood[ipl]++;
     _iplTicks[iplLast] += curTick - iplLastTick;
     iplLastTick = curTick;
     iplLast = ipl;
 }

 void
 Statistics::mode(cpu_mode newmode, ExecContext *xc)
 {
     Addr pcbb = xc->readMiscReg(AlphaISA::IPR_PALtemp23);

     if ((newmode == kernel || newmode == interrupt) &&
             pcbb == idleProcess)
         newmode = idle;

     if (bin_int == false && newmode == interrupt)
         newmode = kernel;

     changeMode(newmode, xc);
 }

 void
 Statistics::context(Addr oldpcbb, Addr newpcbb, ExecContext *xc)
 {
     assert(themode != user);

     _swap_context++;
     changeMode(newpcbb == idleProcess ? idle : kernel, xc);
 }

 void
 Statistics::callpal(int code, ExecContext *xc)
 {
     if (!PAL::name(code))
         return;

     _callpal[code]++;

     switch (code) {
       case PAL::callsys: {
           int number = xc->readIntReg(0);
           if (SystemCalls<Tru64>::validSyscallNumber(number)) {
               int cvtnum = SystemCalls<Tru64>::convert(number);
               _syscall[cvtnum]++;
           }
       } break;

       case PAL::swpctx:
         if (xc->getSystemPtr()->kernelBinning)
             xc->getSystemPtr()->kernelBinning->palSwapContext(xc);
         break;
     }
 }

 void
 Statistics::serialize(ostream &os)
 {
     int exemode = themode;
     SERIALIZE_SCALAR(exemode);
     SERIALIZE_SCALAR(idleProcess);
     SERIALIZE_SCALAR(iplLast);
     SERIALIZE_SCALAR(iplLastTick);
     SERIALIZE_SCALAR(lastModeTick);
 }

 void
 Statistics::unserialize(Checkpoint *cp, const string &section)
 {
     int exemode;
     UNSERIALIZE_SCALAR(exemode);
     UNSERIALIZE_SCALAR(idleProcess);
     UNSERIALIZE_SCALAR(iplLast);
     UNSERIALIZE_SCALAR(iplLastTick);
     UNSERIALIZE_SCALAR(lastModeTick);
     themode = (cpu_mode)exemode;
 }

 /* end namespace Kernel */ }
	/*
	* Copyright (c) 2004-2005 The Regents of The University of Michigan
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met: redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer;
	* redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution;
	* neither the name of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include <map>
	#include <stack>
	#include <string>

	#include "arch/alpha/osfpal.hh"
	#include "base/trace.hh"
	#include "cpu/exec_context.hh"
	#include "kern/kernel_stats.hh"
	#include "kern/tru64/tru64_syscalls.hh"
	#include "sim/system.hh"

	using namespace std;
	using namespace Stats;

	namespace Kernel {

	const char *modestr[] = { "kernel", "user", "idle", "interrupt" };

	Statistics::Statistics(System *system)
	: idleProcess((Addr)-1), themode(kernel), lastModeTick(0),
	iplLast(0), iplLastTick(0)
	{
	bin_int = system->params()->bin_int;
	}

	void
	Statistics::regStats(const string &_name)
	{
	myname = _name;

	_arm
	.name(name() + ".inst.arm")
	.desc("number of arm instructions executed")
	;

	_quiesce
	.name(name() + ".inst.quiesce")
	.desc("number of quiesce instructions executed")
	;

	_ivlb
	.name(name() + ".inst.ivlb")
	.desc("number of ivlb instructions executed")
	;

	_ivle
	.name(name() + ".inst.ivle")
	.desc("number of ivle instructions executed")
	;

	_hwrei
	.name(name() + ".inst.hwrei")
	.desc("number of hwrei instructions executed")
	;

	_iplCount
	.init(32)
	.name(name() + ".ipl_count")
	.desc("number of times we switched to this ipl")
	.flags(total \| pdf \| nozero \| nonan)
	;

	_iplGood
	.init(32)
	.name(name() + ".ipl_good")
	.desc("number of times we switched to this ipl from a different ipl")
	.flags(total \| pdf \| nozero \| nonan)
	;

	_iplTicks
	.init(32)
	.name(name() + ".ipl_ticks")
	.desc("number of cycles we spent at this ipl")
	.flags(total \| pdf \| nozero \| nonan)
	;

	_iplUsed
	.name(name() + ".ipl_used")
	.desc("fraction of swpipl calls that actually changed the ipl")
	.flags(total \| nozero \| nonan)
	;

	_iplUsed = _iplGood / _iplCount;

	_callpal
	.init(256)
	.name(name() + ".callpal")
	.desc("number of callpals executed")
	.flags(total \| pdf \| nozero \| nonan)
	;

	for (int i = 0; i < PAL::NumCodes; ++i) {
	const char *str = PAL::name(i);
	if (str)
	_callpal.subname(i, str);
	}

	_syscall
	.init(SystemCalls<Tru64>::Number)
	.name(name() + ".syscall")
	.desc("number of syscalls executed")
	.flags(total \| pdf \| nozero \| nonan)
	;

	for (int i = 0; i < SystemCalls<Tru64>::Number; ++i) {
	const char *str = SystemCalls<Tru64>::name(i);
	if (str) {
	_syscall.subname(i, str);
	}
	}

	_mode
	.init(cpu_mode_num)
	.name(name() + ".mode_switch")
	.desc("number of protection mode switches")
	;

	for (int i = 0; i < cpu_mode_num; ++i)
	_mode.subname(i, modestr[i]);

	_modeGood
	.init(cpu_mode_num)
	.name(name() + ".mode_good")
	;

	for (int i = 0; i < cpu_mode_num; ++i)
	_modeGood.subname(i, modestr[i]);

	_modeFraction
	.name(name() + ".mode_switch_good")
	.desc("fraction of useful protection mode switches")
	.flags(total)
	;

	for (int i = 0; i < cpu_mode_num; ++i)
	_modeFraction.subname(i, modestr[i]);

	_modeFraction = _modeGood / _mode;

	_modeTicks
	.init(cpu_mode_num)
	.name(name() + ".mode_ticks")
	.desc("number of ticks spent at the given mode")
	.flags(pdf)
	;
	for (int i = 0; i < cpu_mode_num; ++i)
	_modeTicks.subname(i, modestr[i]);

	_swap_context
	.name(name() + ".swap_context")
	.desc("number of times the context was actually changed")
	;
	}

	void
	Statistics::setIdleProcess(Addr idlepcbb, ExecContext *xc)
	{
	assert(themode == kernel \|\| themode == interrupt);
	idleProcess = idlepcbb;
	themode = idle;
	changeMode(themode, xc);
	}

	void
	Statistics::changeMode(cpu_mode newmode, ExecContext *xc)
	{
	_mode[newmode]++;

	if (newmode == themode)
	return;

	DPRINTF(Context, "old mode=%-8s new mode=%-8s\n",
	modestr[themode], modestr[newmode]);

	_modeGood[newmode]++;
	_modeTicks[themode] += curTick - lastModeTick;

	xc->getSystemPtr()->kernelBinning->changeMode(newmode);

	lastModeTick = curTick;
	themode = newmode;
	}

	void
	Statistics::swpipl(int ipl)
	{
	assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n");

	_iplCount[ipl]++;

	if (ipl == iplLast)
	return;

	_iplGood[ipl]++;
	_iplTicks[iplLast] += curTick - iplLastTick;
	iplLastTick = curTick;
	iplLast = ipl;
	}

	void
	Statistics::mode(cpu_mode newmode, ExecContext *xc)
	{
	Addr pcbb = xc->readMiscReg(AlphaISA::IPR_PALtemp23);

	if ((newmode == kernel \|\| newmode == interrupt) &&
	pcbb == idleProcess)
	newmode = idle;

	if (bin_int == false && newmode == interrupt)
	newmode = kernel;

	changeMode(newmode, xc);
	}

	void
	Statistics::context(Addr oldpcbb, Addr newpcbb, ExecContext *xc)
	{
	assert(themode != user);

	_swap_context++;
	changeMode(newpcbb == idleProcess ? idle : kernel, xc);
	}

	void
	Statistics::callpal(int code, ExecContext *xc)
	{
	if (!PAL::name(code))
	return;

	_callpal[code]++;

	switch (code) {
	case PAL::callsys: {
	int number = xc->readIntReg(0);
	if (SystemCalls<Tru64>::validSyscallNumber(number)) {
	int cvtnum = SystemCalls<Tru64>::convert(number);
	_syscall[cvtnum]++;
	}
	} break;

	case PAL::swpctx:
	if (xc->getSystemPtr()->kernelBinning)
	xc->getSystemPtr()->kernelBinning->palSwapContext(xc);
	break;
	}
	}

	void
	Statistics::serialize(ostream &os)
	{
	int exemode = themode;
	SERIALIZE_SCALAR(exemode);
	SERIALIZE_SCALAR(idleProcess);
	SERIALIZE_SCALAR(iplLast);
	SERIALIZE_SCALAR(iplLastTick);
	SERIALIZE_SCALAR(lastModeTick);
	}

	void
	Statistics::unserialize(Checkpoint *cp, const string &section)
	{
	int exemode;
	UNSERIALIZE_SCALAR(exemode);
	UNSERIALIZE_SCALAR(idleProcess);
	UNSERIALIZE_SCALAR(iplLast);
	UNSERIALIZE_SCALAR(iplLastTick);
	UNSERIALIZE_SCALAR(lastModeTick);
	themode = (cpu_mode)exemode;
	}

	/* end namespace Kernel */ }