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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 1 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081038.017566012@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
224 lines
5.6 KiB
Perl
Executable file
224 lines
5.6 KiB
Perl
Executable file
#!/usr/bin/env perl
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# SPDX-License-Identifier: GPL-2.0-only
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# Copyright 2008, Intel Corporation
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#
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# This file is part of the Linux kernel
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#
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# Authors:
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# Arjan van de Ven <arjan@linux.intel.com>
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#
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# This script turns a dmesg output into a SVG graphic that shows which
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# functions take how much time. You can view SVG graphics with various
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# programs, including Inkscape, The Gimp and Firefox.
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#
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#
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# For this script to work, the kernel needs to be compiled with the
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# CONFIG_PRINTK_TIME configuration option enabled, and with
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# "initcall_debug" passed on the kernel command line.
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#
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# usage:
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# dmesg | perl scripts/bootgraph.pl > output.svg
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#
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use strict;
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use Getopt::Long;
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my $header = 0;
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sub help {
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my $text = << "EOM";
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Usage:
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1) dmesg | perl scripts/bootgraph.pl [OPTION] > output.svg
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2) perl scripts/bootgraph.pl -h
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Options:
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-header Insert kernel version and date
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EOM
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my $std=shift;
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if ($std == 1) {
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print STDERR $text;
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} else {
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print $text;
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}
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exit;
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}
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GetOptions(
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'h|help' =>\&help,
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'header' =>\$header
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);
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my %start;
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my %end;
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my %type;
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my $done = 0;
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my $maxtime = 0;
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my $firsttime = 99999;
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my $count = 0;
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my %pids;
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my %pidctr;
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my $headerstep = 20;
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my $xheader = 15;
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my $yheader = 25;
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my $cyheader = 0;
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while (<>) {
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my $line = $_;
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if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z0-9\_\.]+)\+/) {
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my $func = $2;
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if ($done == 0) {
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$start{$func} = $1;
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$type{$func} = 0;
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if ($1 < $firsttime) {
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$firsttime = $1;
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}
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}
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if ($line =~ /\@ ([0-9]+)/) {
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$pids{$func} = $1;
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}
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$count = $count + 1;
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}
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if ($line =~ /([0-9\.]+)\] async_waiting @ ([0-9]+)/) {
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my $pid = $2;
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my $func;
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if (!defined($pidctr{$pid})) {
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$func = "wait_" . $pid . "_1";
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$pidctr{$pid} = 1;
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} else {
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$pidctr{$pid} = $pidctr{$pid} + 1;
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$func = "wait_" . $pid . "_" . $pidctr{$pid};
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}
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if ($done == 0) {
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$start{$func} = $1;
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$type{$func} = 1;
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if ($1 < $firsttime) {
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$firsttime = $1;
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}
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}
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$pids{$func} = $pid;
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$count = $count + 1;
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}
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if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_\.]+)\+.*returned/) {
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if ($done == 0) {
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$end{$2} = $1;
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$maxtime = $1;
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}
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}
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if ($line =~ /([0-9\.]+)\] async_continuing @ ([0-9]+)/) {
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my $pid = $2;
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my $func = "wait_" . $pid . "_" . $pidctr{$pid};
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$end{$func} = $1;
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$maxtime = $1;
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}
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if ($line =~ /Write protecting the/) {
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$done = 1;
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}
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if ($line =~ /Freeing unused kernel memory/) {
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$done = 1;
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}
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}
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if ($count == 0) {
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print STDERR <<END;
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No data found in the dmesg. Make sure that 'printk.time=1' and
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'initcall_debug' are passed on the kernel command line.
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END
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help(1);
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exit 1;
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}
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print "<?xml version=\"1.0\" standalone=\"no\"?> \n";
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print "<svg width=\"2000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n";
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if ($header) {
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my $version = `uname -a`;
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my $date = `date`;
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print "<text transform=\"translate($xheader,$yheader)\">Kernel version: $version</text>\n";
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$cyheader = $yheader+$headerstep;
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print "<text transform=\"translate($xheader,$cyheader)\">Date: $date</text>\n";
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}
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my @styles;
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$styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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$styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
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my $style_wait = "fill:rgb(128,128,128);fill-opacity:0.5;stroke-width:0;stroke:rgb(0,0,0)";
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my $mult = 1950.0 / ($maxtime - $firsttime);
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my $threshold2 = ($maxtime - $firsttime) / 120.0;
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my $threshold = $threshold2/10;
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my $stylecounter = 0;
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my %rows;
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my $rowscount = 1;
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my @initcalls = sort { $start{$a} <=> $start{$b} } keys(%start);
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foreach my $key (@initcalls) {
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my $duration = $end{$key} - $start{$key};
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if ($duration >= $threshold) {
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my ($s, $s2, $s3, $e, $w, $y, $y2, $style);
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my $pid = $pids{$key};
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if (!defined($rows{$pid})) {
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$rows{$pid} = $rowscount;
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$rowscount = $rowscount + 1;
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}
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$s = ($start{$key} - $firsttime) * $mult;
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$s2 = $s + 6;
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$s3 = $s + 1;
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$e = ($end{$key} - $firsttime) * $mult;
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$w = $e - $s;
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$y = $rows{$pid} * 150;
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$y2 = $y + 4;
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$style = $styles[$stylecounter];
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$stylecounter = $stylecounter + 1;
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if ($stylecounter > 11) {
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$stylecounter = 0;
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};
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if ($type{$key} == 1) {
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$y = $y + 15;
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print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"115\" style=\"$style_wait\"/>\n";
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} else {
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print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
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if ($duration >= $threshold2) {
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print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
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} else {
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print "<text transform=\"translate($s3,$y2) rotate(90)\" font-size=\"3pt\">$key</text>\n";
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}
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}
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}
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}
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# print the time line on top
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my $time = $firsttime;
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my $step = ($maxtime - $firsttime) / 15;
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while ($time < $maxtime) {
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my $s3 = ($time - $firsttime) * $mult;
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my $tm = int($time * 100) / 100.0;
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print "<text transform=\"translate($s3,89) rotate(90)\">$tm</text>\n";
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$time = $time + $step;
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}
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print "</svg>\n";
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