kernel_stats.cc revision 7811 
111986Sandreas.sandberg@arm.com/*
211986Sandreas.sandberg@arm.com * Copyright (c) 2004-2005 The Regents of The University of Michigan
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811986Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer;
911986Sandreas.sandberg@arm.com * redistributions in binary form must reproduce the above copyright
1011986Sandreas.sandberg@arm.com * notice, this list of conditions and the following disclaimer in the
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2611986Sandreas.sandberg@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2711986Sandreas.sandberg@arm.com *
2811986Sandreas.sandberg@arm.com * Authors: Lisa Hsu
2911986Sandreas.sandberg@arm.com *          Nathan Binkert
3011986Sandreas.sandberg@arm.com */
3111986Sandreas.sandberg@arm.com
3211986Sandreas.sandberg@arm.com#include <string>
3311986Sandreas.sandberg@arm.com
3411986Sandreas.sandberg@arm.com#include "base/trace.hh"
3511986Sandreas.sandberg@arm.com#include "cpu/thread_context.hh"
3611986Sandreas.sandberg@arm.com#include "kern/kernel_stats.hh"
3711986Sandreas.sandberg@arm.com#include "kern/tru64/tru64_syscalls.hh"
3811986Sandreas.sandberg@arm.com#include "sim/system.hh"
3911986Sandreas.sandberg@arm.com
4011986Sandreas.sandberg@arm.comusing namespace std;
4111986Sandreas.sandberg@arm.comusing namespace Stats;
4211986Sandreas.sandberg@arm.com
4311986Sandreas.sandberg@arm.comnamespace Kernel {
4411986Sandreas.sandberg@arm.com
4511986Sandreas.sandberg@arm.comStatistics::Statistics(System *system)
4611986Sandreas.sandberg@arm.com    : iplLast(0), iplLastTick(0)
4711986Sandreas.sandberg@arm.com{
4811986Sandreas.sandberg@arm.com}
4911986Sandreas.sandberg@arm.com
5011986Sandreas.sandberg@arm.comvoid
5111986Sandreas.sandberg@arm.comStatistics::regStats(const string &_name)
5211986Sandreas.sandberg@arm.com{
5311986Sandreas.sandberg@arm.com    myname = _name;
5411986Sandreas.sandberg@arm.com
5511986Sandreas.sandberg@arm.com    _arm
5611986Sandreas.sandberg@arm.com        .name(name() + ".inst.arm")
5711986Sandreas.sandberg@arm.com        .desc("number of arm instructions executed")
5811986Sandreas.sandberg@arm.com        ;
59
60    _quiesce
61        .name(name() + ".inst.quiesce")
62        .desc("number of quiesce instructions executed")
63        ;
64
65    _iplCount
66        .init(32)
67        .name(name() + ".ipl_count")
68        .desc("number of times we switched to this ipl")
69        .flags(total | pdf | nozero | nonan)
70        ;
71
72    _iplGood
73        .init(32)
74        .name(name() + ".ipl_good")
75        .desc("number of times we switched to this ipl from a different ipl")
76        .flags(total | pdf | nozero | nonan)
77        ;
78
79    _iplTicks
80        .init(32)
81        .name(name() + ".ipl_ticks")
82        .desc("number of cycles we spent at this ipl")
83        .flags(total | pdf | nozero | nonan)
84        ;
85
86    _iplUsed
87        .name(name() + ".ipl_used")
88        .desc("fraction of swpipl calls that actually changed the ipl")
89        .flags(total | nozero | nonan)
90        ;
91
92    _iplUsed = _iplGood / _iplCount;
93
94    _syscall
95        .init(SystemCalls<Tru64>::Number)
96        .name(name() + ".syscall")
97        .desc("number of syscalls executed")
98        .flags(total | pdf | nozero | nonan)
99        ;
100
101    //@todo This needs to get the names of syscalls from an appropriate place.
102#if 0
103    for (int i = 0; i < SystemCalls<Tru64>::Number; ++i) {
104        const char *str = SystemCalls<Tru64>::name(i);
105        if (str) {
106            _syscall.subname(i, str);
107        }
108    }
109#endif
110}
111
112void
113Statistics::swpipl(int ipl)
114{
115    assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n");
116
117    _iplCount[ipl]++;
118
119    if (ipl == iplLast)
120        return;
121
122    _iplGood[ipl]++;
123    _iplTicks[iplLast] += curTick - iplLastTick;
124    iplLastTick = curTick;
125    iplLast = ipl;
126}
127
128void
129Statistics::serialize(ostream &os)
130{
131    SERIALIZE_SCALAR(iplLast);
132    SERIALIZE_SCALAR(iplLastTick);
133}
134
135void
136Statistics::unserialize(Checkpoint *cp, const string &section)
137{
138    UNSERIALIZE_SCALAR(iplLast);
139    UNSERIALIZE_SCALAR(iplLastTick);
140}
141
142} // namespace Kernel
143