157 lines
4.5 KiB
Perl
157 lines
4.5 KiB
Perl
#!/usr/bin/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;
|
|
|
|
my %start;
|
|
my %end;
|
|
my $done = 0;
|
|
my $maxtime = 0;
|
|
my $firsttime = 100;
|
|
my $count = 0;
|
|
my %pids;
|
|
|
|
while (<>) {
|
|
my $line = $_;
|
|
if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z0-9\_]+)\+/) {
|
|
my $func = $2;
|
|
if ($done == 0) {
|
|
$start{$func} = $1;
|
|
if ($1 < $firsttime) {
|
|
$firsttime = $1;
|
|
}
|
|
}
|
|
if ($line =~ /\@ ([0-9]+)/) {
|
|
$pids{$func} = $1;
|
|
}
|
|
$count = $count + 1;
|
|
}
|
|
|
|
if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_]+)\+.*returned/) {
|
|
if ($done == 0) {
|
|
$end{$2} = $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.
|
|
Usage:
|
|
dmesg | perl scripts/bootgraph.pl > output.svg
|
|
END
|
|
exit 1;
|
|
}
|
|
|
|
print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
|
|
print "<svg width=\"1000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\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 $mult = 950.0 / ($maxtime - $firsttime);
|
|
my $threshold = ($maxtime - $firsttime) / 60.0;
|
|
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, $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;
|
|
$e = ($end{$key} - $firsttime) * $mult;
|
|
$w = $e - $s;
|
|
|
|
$y = $rows{$pid} * 150;
|
|
$y2 = $y + 4;
|
|
|
|
$style = $styles[$stylecounter];
|
|
$stylecounter = $stylecounter + 1;
|
|
if ($stylecounter > 11) {
|
|
$stylecounter = 0;
|
|
};
|
|
|
|
print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
|
|
print "<text transform=\"translate($s2,$y2) rotate(90)\">$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";
|