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#
!/usr/bin/env perl
#
Copyright 2008, Intel Corporation
#
#
This file is part of the Linux kernel
#
#
This program file is free software; you can redistribute it and/or modify it
#
under the terms of the GNU General Public License as published by the
#
Free Software Foundation; version 2 of the License.
#
#
This program is distributed in the hope that it will be useful, but WITHOUT
#
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
#
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
#
for more details.
#
#
You should have received a copy of the GNU General Public License
#
along with this program in a file named COPYING; if not, write to the
#
Free Software Foundation, Inc.,
#
51 Franklin Street, Fifth Floor,
#
Boston, MA 02110-1301 USA
#
#
Authors:
#
Arjan van de Ven <arjan@linux.intel.com>
#
#
This script turns a dmesg output into a SVG graphic that shows which
#
functions take how much time. You can view SVG graphics with various
#
programs, including Inkscape, The Gimp and Firefox.
#
#
#
For this script to work, the kernel needs to be compiled with the
#
CONFIG_PRINTK_TIME configuration option enabled, and with
#
"initcall_debug" passed on the kernel command line.
#
#
usage:
#
dmesg | perl scripts/bootgraph.pl > output.svg
#
use
strict;
use
Getopt::Long;
my
$header
= 0;
sub
help
{
my
$text
=
<< "EOM"
;
Usage:
1) dmesg | perl scripts/bootgraph.pl [OPTION] > output.svg
2) perl scripts/bootgraph.pl -h
Options:
-header Insert kernel version and date
EOM
my
$std
=
shift
;
if
(
$std
== 1) {
print
STDERR
$text
;
}
else
{
print
$text
;
}
exit
;
}
GetOptions(
'
h|help
'
=>
\&help,
'
header
'
=>
\
$header
);
my
%start
;
my
%end
;
my
%type
;
my
$done
= 0;
my
$maxtime
= 0;
my
$firsttime
= 99999;
my
$count
= 0;
my
%pids
;
my
%pidctr
;
my
$headerstep
= 20;
my
$xheader
= 15;
my
$yheader
= 25;
my
$cyheader
= 0;
while
(<>) {
my
$line
=
$_
;
if
(
$line
=~
/
([0-9
\.
]+)
\]
calling ([a-zA-Z0-9
\_\.
]+)
\+
/
) {
my
$func
=
$2
;
if
(
$done
== 0) {
$start
{
$func
} =
$1
;
$type
{
$func
} = 0;
if
(
$1
<
$firsttime
) {
$firsttime
=
$1
;
}
}
if
(
$line
=~
/
\@
([0-9]+)
/
) {
$pids
{
$func
} =
$1
;
}
$count
=
$count
+ 1;
}
if
(
$line
=~
/
([0-9
\.
]+)
\]
async_waiting @ ([0-9]+)
/
) {
my
$pid
=
$2
;
my
$func
;
if
(!
defined
(
$pidctr
{
$pid
})) {
$func
=
"
wait_
"
.
$pid
.
"
_1
"
;
$pidctr
{
$pid
} = 1;
}
else
{
$pidctr
{
$pid
} =
$pidctr
{
$pid
} + 1;
$func
=
"
wait_
"
.
$pid
.
"
_
"
.
$pidctr
{
$pid
};
}
if
(
$done
== 0) {
$start
{
$func
} =
$1
;
$type
{
$func
} = 1;
if
(
$1
<
$firsttime
) {
$firsttime
=
$1
;
}
}
$pids
{
$func
} =
$pid
;
$count
=
$count
+ 1;
}
if
(
$line
=~
/
([0-9
\.
]+)
\]
initcall ([a-zA-Z0-9
\_\.
]+)
\+
.*returned
/
) {
if
(
$done
== 0) {
$end
{
$2
} =
$1
;
$maxtime
=
$1
;
}
}
if
(
$line
=~
/
([0-9
\.
]+)
\]
async_continuing @ ([0-9]+)
/
) {
my
$pid
=
$2
;
my
$func
=
"
wait_
"
.
$pid
.
"
_
"
.
$pidctr
{
$pid
};
$end
{
$func
} =
$1
;
$maxtime
=
$1
;
}
if
(
$line
=~
/
Write protecting the
/
) {
$done
= 1;
}
if
(
$line
=~
/
Freeing unused kernel memory
/
) {
$done
= 1;
}
}
if
(
$count
== 0) {
print
STDERR
<<END
;
No data found in the dmesg. Make sure that 'printk.time=1' and
'initcall_debug' are passed on the kernel command line.
END
help(1);
exit
1;
}
print
"
<?xml version=
\"
1.0
\"
standalone=
\"
no
\"
?>
\n
"
;
print
"
<svg width=
\"
2000
\"
height=
\"
100%
\"
version=
\"
1.1
\"
xmlns=
\"
http://www.w3.org/2000/svg
\"
>
\n
"
;
if
(
$header
) {
my
$version
=
`
uname -a
`
;
my
$date
=
`
date
`
;
print
"
<text transform=
\"
translate(
$xheader
,
$yheader
)
\"
>Kernel version:
$version
</text>
\n
"
;
$cyheader
=
$yheader
+
$headerstep
;
print
"
<text transform=
\"
translate(
$xheader
,
$cyheader
)
\"
>Date:
$date
</text>
\n
"
;
}
my
@styles
;
$styles
[0] =
"
fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[1] =
"
fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[2] =
"
fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[3] =
"
fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[4] =
"
fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[5] =
"
fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[6] =
"
fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[7] =
"
fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[8] =
"
fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[9] =
"
fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[10] =
"
fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
$styles
[11] =
"
fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)
"
;
my
$style_wait
=
"
fill:rgb(128,128,128);fill-opacity:0.5;stroke-width:0;stroke:rgb(0,0,0)
"
;
my
$mult
= 1950.0 / (
$maxtime
-
$firsttime
);
my
$threshold2
= (
$maxtime
-
$firsttime
) / 120.0;
my
$threshold
=
$threshold2
/10;
my
$stylecounter
= 0;
my
%rows
;
my
$rowscount
= 1;
my
@initcalls
=
sort
{
$start
{
$a
}
<=>
$start
{
$b
} }
keys
(
%start
);
foreach
my
$key
(
@initcalls
) {
my
$duration
=
$end
{
$key
} -
$start
{
$key
};
if
(
$duration
>=
$threshold
) {
my
(
$s
,
$s2
,
$s3
,
$e
,
$w
,
$y
,
$y2
,
$style
);
my
$pid
=
$pids
{
$key
};
if
(!
defined
(
$rows
{
$pid
})) {
$rows
{
$pid
} =
$rowscount
;
$rowscount
=
$rowscount
+ 1;
}
$s
= (
$start
{
$key
} -
$firsttime
) *
$mult
;
$s2
=
$s
+ 6;
$s3
=
$s
+ 1;
$e
= (
$end
{
$key
} -
$firsttime
) *
$mult
;
$w
=
$e
-
$s
;
$y
=
$rows
{
$pid
} * 150;
$y2
=
$y
+ 4;
$style
=
$styles
[
$stylecounter
];
$stylecounter
=
$stylecounter
+ 1;
if
(
$stylecounter
> 11) {
$stylecounter
= 0;
};
if
(
$type
{
$key
} == 1) {
$y
=
$y
+ 15;
print
"
<rect x=
\"
$s
\"
width=
\"
$w
\"
y=
\"
$y
\"
height=
\"
115
\"
style=
\"
$style_wait
\"
/>
\n
"
;
}
else
{
print
"
<rect x=
\"
$s
\"
width=
\"
$w
\"
y=
\"
$y
\"
height=
\"
145
\"
style=
\"
$style
\"
/>
\n
"
;
if
(
$duration
>=
$threshold2
) {
print
"
<text transform=
\"
translate(
$s2
,
$y2
) rotate(90)
\"
>
$key
</text>
\n
"
;
}
else
{
print
"
<text transform=
\"
translate(
$s3
,
$y2
) rotate(90)
\"
font-size=
\"
3pt
\"
>
$key
</text>
\n
"
;
}
}
}
}
#
print the time line on top
my
$time
=
$firsttime
;
my
$step
= (
$maxtime
-
$firsttime
) / 15;
while
(
$time
<
$maxtime
) {
my
$s3
= (
$time
-
$firsttime
) *
$mult
;
my
$tm
=
int
(
$time
* 100) / 100.0;
print
"
<text transform=
\"
translate(
$s3
,89) rotate(90)
\"
>
$tm
</text>
\n
"
;
$time
=
$time
+
$step
;
}
print
"
</svg>
\n
"
;
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