87 lines
3.0 KiB
Groff
87 lines
3.0 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 22, 1995
|
|
.Dt KERNBB 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm kernbb
|
|
.Nd generate a dump of the kernels basic-block profile buffers
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility is used to extract the basic-block profiling buffers of the running
|
|
kernel into the files needed for the
|
|
.Xr gcov 1
|
|
tool.
|
|
.Pp
|
|
At least one source file in the running kernel must have been compiled
|
|
with the
|
|
.Fl Fl test-coverage
|
|
and
|
|
.Fl Fl profile-arcs
|
|
options.
|
|
.Pp
|
|
The output is stored in the filenames compiled into the kernel by
|
|
.Xr gcc 1 .
|
|
If the absolute pathname cannot be written to, the directory part
|
|
of the filename is discarded and the file stored in the current
|
|
directory under its basename.
|
|
.Pp
|
|
The output files are named
|
|
.Pa *.da ,
|
|
and the
|
|
.Xr gcov 1
|
|
program will extract the counts and merge them with the source
|
|
file to show actual execution counts.
|
|
.Sh FILES
|
|
.Bl -tag -width /boot/kernel/kernel -compact
|
|
.It Pa /boot/kernel/kernel
|
|
the default system
|
|
.It Pa /dev/kmem
|
|
the default memory
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr cc 1 ,
|
|
.Xr gcov 1
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
utility was written by
|
|
.An Poul-Henning Kamp ,
|
|
along with the kernel-support.
|
|
.Sh BUGS
|
|
There are far too much magic and internal knowledge from GCC in this.
|