kern/kernel_stats.hh

   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
  29 #ifndef __KERNEL_STATS_HH__
  30 #define __KERNEL_STATS_HH__
  31
  32 #include <map>
  33 #include <stack>
  34 #include <string>
  35 #include <vector>
  36
  37 #include "cpu/static_inst.hh"
  38
  39 class BaseCPU;
  40 class ExecContext;
  41 class FnEvent;
  42 // What does kernel stats expect is included?
  43 class System;
  44 class Fault;
  45
  46 namespace Kernel {
  47
  48 enum cpu_mode { kernel, user, idle, interrupt, cpu_mode_num };
  49 extern const char *modestr[];
  50
  51 class Binning
  52 {
  53   private:
  54     std::string myname;
  55     System *system;
  56
  57   private:
  58     // lisa's binning stuff
  59     struct fnCall
  60     {
  61         Stats::MainBin *myBin;
  62         std::string name;
  63     };
  64
  65     struct SWContext
  66     {
  67         Counter calls;
  68         std::stack<fnCall *> callStack;
  69     };
  70
  71     std::map<const std::string, Stats::MainBin *> fnBins;
  72     std::map<const Addr, SWContext *> swCtxMap;
  73
  74     std::multimap<const std::string, std::string> callerMap;
  75     void populateMap(std::string caller, std::string callee);
  76
  77     std::vector<FnEvent *> fnEvents;
  78
  79     Stats::Scalar<> fnCalls;
  80
  81     Stats::MainBin *getBin(const std::string &name);
  82     bool findCaller(std::string, std::string) const;
  83
  84     SWContext *findContext(Addr pcb);
  85     bool addContext(Addr pcb, SWContext *ctx)
  86     {
  87         return (swCtxMap.insert(std::make_pair(pcb, ctx))).second;
  88     }
  89
  90     void remContext(Addr pcb)
  91     {
  92         swCtxMap.erase(pcb);
  93     }
  94
  95     void dumpState() const;
  96
  97     SWContext *swctx;
  98     std::vector<std::string> binned_fns;
  99
 100   private:
 101     Stats::MainBin *modeBin[cpu_mode_num];
 102
 103   public:
 104     const bool bin;
 105     const bool fnbin;
 106
 107     cpu_mode themode;
 108     void palSwapContext(ExecContext *xc);
 109     void execute(ExecContext *xc, StaticInstPtr inst);
 110     void call(ExecContext *xc, Stats::MainBin *myBin);
 111     void changeMode(cpu_mode mode);
 112
 113   public:
 114     Binning(System *sys);
 115     virtual ~Binning();
 116
 117     const std::string name() const { return myname; }
 118     void regStats(const std::string &name);
 119
 120   public:
 121     virtual void serialize(std::ostream &os);
 122     virtual void unserialize(Checkpoint *cp, const std::string &section);
 123 };
 124
 125 class Statistics : public Serializable
 126 {
 127   private:
 128     friend class Binning;
 129
 130   private:
 131     std::string myname;
 132     ExecContext *xc;
 133
 134     Addr idleProcess;
 135     cpu_mode themode;
 136     Tick lastModeTick;
 137     bool bin_int;
 138
 139     void changeMode(cpu_mode newmode);
 140
 141   private:
 142     Stats::Scalar<> _arm;
 143     Stats::Scalar<> _quiesce;
 144     Stats::Scalar<> _ivlb;
 145     Stats::Scalar<> _ivle;
 146     Stats::Scalar<> _hwrei;
 147
 148     Stats::Vector<> _iplCount;
 149     Stats::Vector<> _iplGood;
 150     Stats::Vector<> _iplTicks;
 151     Stats::Formula _iplUsed;
 152
 153     Stats::Vector<> _callpal;
 154     Stats::Vector<> _syscall;
 155     Stats::Vector<> _faults;
 156
 157     Stats::Vector<> _mode;
 158     Stats::Vector<> _modeGood;
 159     Stats::Formula _modeFraction;
 160     Stats::Vector<> _modeTicks;
 161
 162     Stats::Scalar<> _swap_context;
 163
 164   private:
 165     int iplLast;
 166     Tick iplLastTick;
 167
 168   public:
 169     Statistics(ExecContext *context);
 170
 171     const std::string name() const { return myname; }
 172     void regStats(const std::string &name);
 173
 174   public:
 175     void arm() { _arm++; }
 176     void quiesce() { _quiesce++; }
 177     void ivlb() { _ivlb++; }
 178     void ivle() { _ivle++; }
 179     void hwrei() { _hwrei++; }
 180     void fault(Fault * fault)
 181     {
 182             if(fault == NoFault) _faults[0]++;
 183             else if(fault == MachineCheckFault) _faults[2]++;
 184             else if(fault == AlignmentFault) _faults[7]++;
 185             else _faults[fault->id]++;
 186     }// FIXME: When there are no generic system fault objects, this will go back to _faults[fault]++; }
 187     void swpipl(int ipl);
 188     void mode(cpu_mode newmode);
 189     void context(Addr oldpcbb, Addr newpcbb);
 190     void callpal(int code);
 191
 192     void setIdleProcess(Addr idle);
 193
 194   public:
 195     virtual void serialize(std::ostream &os);
 196     virtual void unserialize(Checkpoint *cp, const std::string &section);
 197 };
 198
 199 /* end namespace Kernel */ }
 200
 201 #endif // __KERNEL_STATS_HH__