You've already forked linux-apfs
mirror of
https://github.com/linux-apfs/linux-apfs.git
synced 2026-05-01 15:00:59 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-fastboot
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-fastboot: raid, fastboot: hide RAID autodetect option if MD is compiled as a module raid: make RAID autodetect default a KConfig option warning: fix init do_mounts_md c fastboot: make the RAID autostart code print a message just before waiting fastboot: make the raid autodetect code wait for all devices to init fastboot: Fix bootgraph.pl initcall name regexp fastboot: fix issues and improve output of bootgraph.pl Add a script to visualize the kernel boot process / time
This commit is contained in:
Linus Torvalds
@@ -0,0 +1,147 @@
|
||||
#!/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
|
||||
#
|
||||
|
||||
my @rows;
|
||||
my %start, %end, %row;
|
||||
my $done = 0;
|
||||
my $rowcount = 0;
|
||||
my $maxtime = 0;
|
||||
my $firsttime = 100;
|
||||
my $count = 0;
|
||||
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;
|
||||
}
|
||||
}
|
||||
$row{$func} = 1;
|
||||
if ($line =~ /\@ ([0-9]+)/) {
|
||||
my $pid = $1;
|
||||
if (!defined($rows[$pid])) {
|
||||
$rowcount = $rowcount + 1;
|
||||
$rows[$pid] = $rowcount;
|
||||
}
|
||||
$row{$func} = $rows[$pid];
|
||||
}
|
||||
$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 "No data found in the dmesg. Make sure that 'printk.time=1' and\n";
|
||||
print "'initcall_debug' are passed on the kernel command line.\n\n";
|
||||
print "Usage: \n";
|
||||
print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n";
|
||||
exit;
|
||||
}
|
||||
|
||||
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 $stylecounter = 0;
|
||||
while (($key,$value) = each %start) {
|
||||
my $duration = $end{$key} - $start{$key};
|
||||
|
||||
if ($duration >= $threshold) {
|
||||
my $s, $s2, $e, $y;
|
||||
$s = ($value - $firsttime) * $mult;
|
||||
$s2 = $s + 6;
|
||||
$e = ($end{$key} - $firsttime) * $mult;
|
||||
$w = $e - $s;
|
||||
|
||||
$y = $row{$key} * 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 $s2 = ($time - $firsttime) * $mult;
|
||||
my $tm = int($time * 100) / 100.0;
|
||||
print "<text transform=\"translate($s2,89) rotate(90)\">$tm</text>\n";
|
||||
$time = $time + $step;
|
||||
}
|
||||
|
||||
print "</svg>\n";
|
||||
Reference in New Issue
Block a user