392 lines
9.6 KiB
C++
392 lines
9.6 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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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 are
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* met: 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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* 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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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <map>
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#include <stack>
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#include <string>
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#include "base/statistics.hh"
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#include "base/trace.hh"
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#include "cpu/exec_context.hh"
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#include "kern/kernel_stats.hh"
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#include "sim/stats.hh"
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#include "sim/sw_context.hh"
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#include "targetarch/isa_traits.hh"
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#include "targetarch/osfpal.hh"
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#include "targetarch/syscalls.hh"
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using namespace std;
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using namespace Stats;
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class KSData
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{
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private:
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string _name;
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ExecContext *xc;
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BaseCPU *cpu;
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public:
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KSData(ExecContext *_xc, BaseCPU *_cpu)
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: xc(_xc), cpu(_cpu), iplLast(0), iplLastTick(0), lastUser(false),
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lastModeTick(0)
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{}
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const string &name() { return _name; }
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void regStats(const string &name);
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public:
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Scalar<> _arm;
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Scalar<> _quiesce;
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Scalar<> _ivlb;
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Scalar<> _ivle;
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Scalar<> _hwrei;
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Vector<> _iplCount;
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Vector<> _iplGood;
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Vector<> _iplTicks;
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Formula _iplUsed;
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Vector<> _callpal;
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Vector<> _syscall;
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Vector<> _faults;
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Vector<> _mode;
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Vector<> _modeGood;
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Formula _modeFraction;
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Vector<> _modeTicks;
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Scalar<> _swap_context;
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private:
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int iplLast;
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Tick iplLastTick;
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bool lastUser;
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Tick lastModeTick;
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public:
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void swpipl(int ipl);
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void mode(bool user);
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void callpal(int code);
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};
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KernelStats::KernelStats(ExecContext *xc, BaseCPU *cpu)
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{ data = new KSData(xc, cpu); }
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KernelStats::~KernelStats()
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{ delete data; }
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void
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KernelStats::regStats(const string &name)
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{ data->regStats(name); }
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void
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KSData::regStats(const string &name)
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{
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_name = name;
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_arm
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.name(name + ".inst.arm")
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.desc("number of arm instructions executed")
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;
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_quiesce
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.name(name + ".inst.quiesce")
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.desc("number of quiesce instructions executed")
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;
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_ivlb
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.name(name + ".inst.ivlb")
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.desc("number of ivlb instructions executed")
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;
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_ivle
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.name(name + ".inst.ivle")
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.desc("number of ivle instructions executed")
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;
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_hwrei
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.name(name + ".inst.hwrei")
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.desc("number of hwrei instructions executed")
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;
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_iplCount
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.init(32)
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.name(name + ".ipl_count")
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.desc("number of times we switched to this ipl")
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.flags(total | pdf | nozero | nonan)
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;
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_iplGood
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.init(32)
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.name(name + ".ipl_good")
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.desc("number of times we switched to this ipl from a different ipl")
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.flags(total | pdf | nozero | nonan)
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;
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_iplTicks
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.init(32)
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.name(name + ".ipl_ticks")
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.desc("number of cycles we spent at this ipl")
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.flags(total | pdf | nozero | nonan)
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;
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_iplUsed
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.name(name + ".ipl_used")
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.desc("fraction of swpipl calls that actually changed the ipl")
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.flags(total | nozero | nonan)
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;
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_iplUsed = _iplGood / _iplCount;
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_callpal
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.init(256)
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.name(name + ".callpal")
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.desc("number of callpals executed")
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.flags(total | pdf | nozero | nonan)
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;
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for (int i = 0; i < PAL::NumCodes; ++i) {
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const char *str = PAL::name(i);
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if (str)
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_callpal.subname(i, str);
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}
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_syscall
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.init(SystemCalls<Tru64>::Number)
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.name(name + ".syscall")
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.desc("number of syscalls executed")
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.flags(total | pdf | nozero | nonan)
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;
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for (int i = 0; i < SystemCalls<Tru64>::Number; ++i) {
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const char *str = SystemCalls<Tru64>::name(i);
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if (str) {
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_syscall.subname(i, str);
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}
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}
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_faults
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.init(Num_Faults)
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.name(name + ".faults")
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.desc("number of faults")
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.flags(total | pdf | nozero | nonan)
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;
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for (int i = 1; i < Num_Faults; ++i) {
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const char *str = FaultName(i);
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if (str)
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_faults.subname(i, str);
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}
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_mode
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.init(2)
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.name(name + ".mode_switch")
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.subname(0, "kernel")
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.subname(1, "user")
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.desc("number of protection mode switches")
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;
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_modeGood
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.init(2)
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.name(name + ".mode_good")
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;
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_modeFraction
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.name(name + ".mode_switch_good")
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.subname(0, "kernel")
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.subname(1, "user")
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.desc("fraction of useful protection mode switches")
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.flags(total)
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;
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_modeFraction = _modeGood / _mode;
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_modeTicks
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.init(2)
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.name(name + ".mode_ticks")
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.subname(0, "kernel")
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.subname(1, "user")
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.desc("number of ticks spent at the given mode")
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.flags(pdf)
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;
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_swap_context
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.name(name + ".swap_context")
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.desc("number of times the context was actually changed")
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;
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}
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void
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KernelStats::arm()
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{ data->_arm++; }
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void
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KernelStats::quiesce()
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{ data->_quiesce++; }
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void
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KernelStats::ivlb()
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{ data->_ivlb++; }
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void
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KernelStats::ivle()
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{ data->_ivle++; }
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void
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KernelStats::hwrei()
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{ data->_hwrei++; }
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void
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KernelStats::fault(Fault fault)
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{ data->_faults[fault]++; }
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void
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KernelStats::swpipl(int ipl)
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{ data->swpipl(ipl); }
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void
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KernelStats::mode(bool user)
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{ data->mode(user); }
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void
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KernelStats::context(Addr old_pcbb, Addr new_pcbb)
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{ data->_swap_context++; }
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void
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KernelStats::callpal(int code)
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{ data->callpal(code); }
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void
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KSData::swpipl(int ipl)
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{
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assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n");
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_iplCount[ipl]++;
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if (ipl == iplLast)
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return;
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_iplGood[ipl]++;
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_iplTicks[iplLast] += curTick - iplLastTick;
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iplLastTick = curTick;
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iplLast = ipl;
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}
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void
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KSData::mode(bool user)
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{
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_mode[user]++;
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if (user == lastUser)
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return;
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_modeGood[user]++;
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_modeTicks[lastUser] += curTick - lastModeTick;
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lastModeTick = curTick;
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lastUser = user;
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if (xc->system->bin) {
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if (!xc->swCtx || xc->swCtx->callStack.empty()) {
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if (user)
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xc->system->User->activate();
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else
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xc->system->Kernel->activate();
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}
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}
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}
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void
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KSData::callpal(int code)
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{
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if (!PAL::name(code))
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return;
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_callpal[code]++;
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switch (code) {
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case PAL::callsys:
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{
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int number = xc->regs.intRegFile[0];
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if (SystemCalls<Tru64>::validSyscallNumber(number)) {
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int cvtnum = SystemCalls<Tru64>::convert(number);
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_syscall[cvtnum]++;
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}
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}
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break;
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}
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if (code == PAL::swpctx) {
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SWContext *out = xc->swCtx;
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System *sys = xc->system;
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if (!sys->bin)
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return;
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DPRINTF(TCPIP, "swpctx event\n");
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if (out) {
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DPRINTF(TCPIP, "swapping context out with this stack!\n");
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xc->system->dumpState(xc);
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Addr oldPCB = xc->regs.ipr[TheISA::IPR_PALtemp23];
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if (out->callStack.empty()) {
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DPRINTF(TCPIP, "but removing it, cuz empty!\n");
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SWContext *find = sys->findContext(oldPCB);
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if (find) {
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assert(sys->findContext(oldPCB) == out);
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sys->remContext(oldPCB);
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}
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delete out;
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} else {
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DPRINTF(TCPIP, "switching out context with pcb %#x, top fn %s\n",
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oldPCB, out->callStack.top()->name);
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if (!sys->findContext(oldPCB)) {
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if (!sys->addContext(oldPCB, out))
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panic("could not add context");
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}
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}
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}
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Addr newPCB = xc->regs.intRegFile[16];
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SWContext *in = sys->findContext(newPCB);
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xc->swCtx = in;
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if (in) {
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assert(!in->callStack.empty() &&
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"should not be switching in empty context");
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DPRINTF(TCPIP, "swapping context in with this callstack!\n");
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xc->system->dumpState(xc);
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sys->remContext(newPCB);
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fnCall *top = in->callStack.top();
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DPRINTF(TCPIP, "switching in to pcb %#x, %s\n", newPCB, top->name);
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assert(top->myBin && "should not switch to context with no Bin");
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top->myBin->activate();
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} else {
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sys->Kernel->activate();
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}
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DPRINTF(TCPIP, "end swpctx\n");
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}
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}
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