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f9b9796a AV |
1 | #!/usr/bin/perl |
2 | ||
3 | # Copyright 2008, Intel Corporation | |
4 | # | |
5 | # This file is part of the Linux kernel | |
6 | # | |
7 | # This program file is free software; you can redistribute it and/or modify it | |
8 | # under the terms of the GNU General Public License as published by the | |
9 | # Free Software Foundation; version 2 of the License. | |
10 | # | |
11 | # This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | # for more details. | |
15 | # | |
16 | # You should have received a copy of the GNU General Public License | |
17 | # along with this program in a file named COPYING; if not, write to the | |
18 | # Free Software Foundation, Inc., | |
19 | # 51 Franklin Street, Fifth Floor, | |
20 | # Boston, MA 02110-1301 USA | |
21 | # | |
22 | # Authors: | |
23 | # Arjan van de Ven <arjan@linux.intel.com> | |
24 | ||
25 | ||
26 | # | |
27 | # This script turns a dmesg output into a SVG graphic that shows which | |
28 | # functions take how much time. You can view SVG graphics with various | |
29 | # programs, including Inkscape, The Gimp and Firefox. | |
30 | # | |
31 | # | |
32 | # For this script to work, the kernel needs to be compiled with the | |
33 | # CONFIG_PRINTK_TIME configuration option enabled, and with | |
34 | # "initcall_debug" passed on the kernel command line. | |
35 | # | |
36 | # usage: | |
37 | # dmesg | perl scripts/bootgraph.pl > output.svg | |
38 | # | |
39 | ||
40 | my @rows; | |
41 | my %start, %end, %row; | |
42 | my $done = 0; | |
43 | my $rowcount = 0; | |
44 | my $maxtime = 0; | |
709790a9 | 45 | my $firsttime = 100; |
f9b9796a AV |
46 | my $count = 0; |
47 | while (<>) { | |
48 | my $line = $_; | |
8bd9890e | 49 | if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z0-9\_]+)\+/) { |
f9b9796a AV |
50 | my $func = $2; |
51 | if ($done == 0) { | |
52 | $start{$func} = $1; | |
709790a9 AV |
53 | if ($1 < $firsttime) { |
54 | $firsttime = $1; | |
55 | } | |
f9b9796a AV |
56 | } |
57 | $row{$func} = 1; | |
58 | if ($line =~ /\@ ([0-9]+)/) { | |
59 | my $pid = $1; | |
60 | if (!defined($rows[$pid])) { | |
61 | $rowcount = $rowcount + 1; | |
62 | $rows[$pid] = $rowcount; | |
63 | } | |
64 | $row{$func} = $rows[$pid]; | |
65 | } | |
66 | $count = $count + 1; | |
67 | } | |
68 | ||
8bd9890e | 69 | if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_]+)\+.*returned/) { |
f9b9796a AV |
70 | if ($done == 0) { |
71 | $end{$2} = $1; | |
72 | $maxtime = $1; | |
73 | } | |
74 | } | |
75 | if ($line =~ /Write protecting the/) { | |
76 | $done = 1; | |
77 | } | |
709790a9 AV |
78 | if ($line =~ /Freeing unused kernel memory/) { |
79 | $done = 1; | |
80 | } | |
f9b9796a AV |
81 | } |
82 | ||
83 | if ($count == 0) { | |
8bd9890e AP |
84 | print "No data found in the dmesg. Make sure that 'printk.time=1' and\n"; |
85 | print "'initcall_debug' are passed on the kernel command line.\n\n"; | |
f9b9796a AV |
86 | print "Usage: \n"; |
87 | print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n"; | |
88 | exit; | |
89 | } | |
90 | ||
91 | print "<?xml version=\"1.0\" standalone=\"no\"?> \n"; | |
92 | print "<svg width=\"1000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n"; | |
93 | ||
94 | my @styles; | |
95 | ||
96 | $styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
97 | $styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
98 | $styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
99 | $styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
100 | $styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
101 | $styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
102 | $styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
103 | $styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
104 | $styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
105 | $styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
106 | $styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
107 | $styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; | |
108 | ||
709790a9 AV |
109 | my $mult = 950.0 / ($maxtime - $firsttime); |
110 | my $threshold = ($maxtime - $firsttime) / 60.0; | |
f9b9796a AV |
111 | my $stylecounter = 0; |
112 | while (($key,$value) = each %start) { | |
113 | my $duration = $end{$key} - $start{$key}; | |
114 | ||
115 | if ($duration >= $threshold) { | |
116 | my $s, $s2, $e, $y; | |
709790a9 | 117 | $s = ($value - $firsttime) * $mult; |
f9b9796a | 118 | $s2 = $s + 6; |
709790a9 | 119 | $e = ($end{$key} - $firsttime) * $mult; |
f9b9796a AV |
120 | $w = $e - $s; |
121 | ||
122 | $y = $row{$key} * 150; | |
123 | $y2 = $y + 4; | |
124 | ||
125 | $style = $styles[$stylecounter]; | |
126 | $stylecounter = $stylecounter + 1; | |
127 | if ($stylecounter > 11) { | |
128 | $stylecounter = 0; | |
129 | }; | |
130 | ||
131 | print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n"; | |
132 | print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n"; | |
133 | } | |
134 | } | |
135 | ||
136 | ||
137 | # print the time line on top | |
709790a9 AV |
138 | my $time = $firsttime; |
139 | my $step = ($maxtime - $firsttime) / 15; | |
f9b9796a | 140 | while ($time < $maxtime) { |
709790a9 AV |
141 | my $s2 = ($time - $firsttime) * $mult; |
142 | my $tm = int($time * 100) / 100.0; | |
143 | print "<text transform=\"translate($s2,89) rotate(90)\">$tm</text>\n"; | |
144 | $time = $time + $step; | |
f9b9796a AV |
145 | } |
146 | ||
147 | print "</svg>\n"; |