From owner-freebsd-commit  Fri Dec 29 07:47:18 1995
Return-Path: owner-commit
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id HAA26638
          for freebsd-commit-outgoing; Fri, 29 Dec 1995 07:47:18 -0800 (PST)
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id HAA26620
          for cvs-all-outgoing; Fri, 29 Dec 1995 07:47:12 -0800 (PST)
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id HAA26606
          for cvs-usrbin-outgoing; Fri, 29 Dec 1995 07:47:09 -0800 (PST)
Received: (from bde@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id HAA26589
          Fri, 29 Dec 1995 07:47:06 -0800 (PST)
Date: Fri, 29 Dec 1995 07:47:06 -0800 (PST)
From: Bruce Evans <bde>
Message-Id: <199512291547.HAA26589@freefall.freebsd.org>
To: CVS-committers, cvs-usrbin
Subject: cvs commit: src/usr.bin/gprof gprof.h
Sender: owner-commit@FreeBSD.ORG
Precedence: bulk

bde         95/12/29 07:47:03

  Modified:    usr.bin/gprof  gprof.h
  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
  1.3       +4 -0      src/usr.bin/gprof/gprof.h