diff options
| author | bde <bde@FreeBSD.org> | 1995-12-29 15:30:05 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 1995-12-29 15:30:05 +0000 |
| commit | 586cc683d875b37dce82c825feb9ccc7d884b35e (patch) | |
| tree | 9ce1e55534d3d930aead3ff55aeb7fcedbc086a4 /sys/i386/conf/files.i386 | |
| parent | ff6f507f6bbb3fda77fb14c7201db37bafea7a3f (diff) | |
| download | FreeBSD-src-586cc683d875b37dce82c825feb9ccc7d884b35e.zip FreeBSD-src-586cc683d875b37dce82c825feb9ccc7d884b35e.tar.gz | |
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.
Diffstat (limited to 'sys/i386/conf/files.i386')
| -rw-r--r-- | sys/i386/conf/files.i386 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/i386/conf/files.i386 b/sys/i386/conf/files.i386 index fda656d..1633ed8 100644 --- a/sys/i386/conf/files.i386 +++ b/sys/i386/conf/files.i386 @@ -1,7 +1,7 @@ # This file tells config what files go into building a kernel, # files marked standard are always included. # -# $Id: files.i386,v 1.120 1995/12/26 12:50:01 bde Exp $ +# $Id: files.i386,v 1.121 1995/12/26 13:57:56 bde Exp $ # aic7xxx_asm optional ahc device-driver \ dependency "$S/dev/aic7xxx/aic7xxx_asm.c" \ @@ -115,6 +115,7 @@ i386/isa/pcvt/pcvt_kbd.c optional vt device-driver i386/isa/pcvt/pcvt_out.c optional vt device-driver i386/isa/pcvt/pcvt_sup.c optional vt device-driver i386/isa/pcvt/pcvt_vtf.c optional vt device-driver +i386/isa/prof_machdep.c optional profiling-routine i386/isa/psm.c optional psm device-driver i386/isa/random_machdep.c standard i386/isa/rc.c optional rc device-driver |
