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Date: Fri, 29 Dec 1995 07:30:11 -0800 (PST)
From: Bruce Evans <bde>
Message-Id: <199512291530.HAA25575@freefall.freebsd.org>
To: CVS-committers, cvs-usrsbin
Subject: cvs commit: src/usr.sbin/kgmon kgmon.8 kgmon.c
Sender: owner-cvs-usrsbin@FreeBSD.ORG
Precedence: bulk

bde         95/12/29 07:30:09

  Modified:    lib/libc/gmon  mcount.c
               sys/i386/conf  files.i386
               sys/i386/include  asmacros.h profile.h
               sys/kern  subr_prof.c
               sys/libkern  mcount.c
               sys/sys   gmon.h
               usr.bin   Makefile
               usr.sbin/config  config.8 mkmakefile.c
               usr.sbin/kgmon  kgmon.8 kgmon.c
  Added:       sys/i386/isa  prof_machdep.c
               usr.bin/gprof4  Makefile
  Log:
  Implemented non-statistical kernel profiling.  This is based on
  looking at a high resolution clock for each of the following events:
  function call, function return, interrupt entry, interrupt exit,
  and interesting branches.  The differences between the times of
  these events are added at appropriate places in a ordinary histogram
  (as if very fast statistical profiling sampled the pc at those
  places) so that ordinary gprof can be used to analyze the times.
  
  gmon.h:
  Histogram counters need to be 4 bytes for microsecond resolutions.
  They will need to be larger for the 586 clock.
  The comments were vax-centric and wrong even on vaxes.  Does anyone
  disagree?
  
  gprof4.c:
  The standard gprof should support counters of all integral sizes
  and the size of the counter should be in the gmon header.  This
  hack will do until then.  (Use gprof4 -u to examine the results
  of non-statistical profiling.)
  
  config/*:
  Non-statistical profiling is configured with `config -pp'.
  `config -p' still gives ordinary profiling.
  
  kgmon/*:
  Non-statistical profiling is enabled with `kgmon -B'.  `kgmon -b'
  still enables ordinary profiling (and distables non-statistical
  profiling) if non-statistical profiling is configured.
  
  Revision  Changes    Path
  1.4       +148 -8    src/lib/libc/gmon/mcount.c
  1.122     +2 -1      src/sys/i386/conf/files.i386
  1.6       +64 -28    src/sys/i386/include/asmacros.h
  1.5       +39 -15    src/sys/i386/include/profile.h
  1.16      +90 -5     src/sys/kern/subr_prof.c
  1.5       +3 -179    src/sys/libkern/mcount.c
  1.8       +57 -9     src/sys/sys/gmon.h
  1.64      +2 -1      src/usr.bin/Makefile
  1.6       +5 -0      src/usr.sbin/config/config.8
  1.14      +6 -2      src/usr.sbin/config/mkmakefile.c
  1.3       +9 -2      src/usr.sbin/kgmon/kgmon.8
  1.6       +27 -10    src/usr.sbin/kgmon/kgmon.c