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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225#!/usr/bin/env perl# SPDX-License-Identifier: GPL-2.0-only
# Copyright 2008, Intel Corporation## This file is part of the Linux kernel## 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.svg2) perl scripts/bootgraph.pl -h
Options: -header Insert kernel version and dateEOM 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 topmy $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";