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tracing/fastboot: fix row order in bootgraph.pl 

When bootgraph.pl parses a file, it gives one row for each initcall's
pid.  But they are displayed in random (perl hash) order.  Let's
sort the pids by the start time of their first initcall instead.

This helps trace module initcalls, where each has a separate pid.
bootgraph.pl will show module initcalls during the initramfs; it may
also be adapted to show subsequent module initcalls.

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Acked-by: Frédéric Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Alan Jenkins 2008-10-14 14:19:15 +01:00 committed by Ingo Molnar
parent 2a813f8cd8
commit 06d1cd267c
1 changed files with 3 additions and 3 deletions
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6
scripts/bootgraph.pl
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@ -108,9 +108,9 @@ my $threshold = ($maxtime - $firsttime) / 60.0;
my $stylecounter = 0;
my %rows;
my $rowscount = 1;
my @initcalls = sort { $start{$a} <=> $start{$b} } keys(%start);
my $key;
my $value;
while (($key,$value) = each %start) {
foreach $key (@initcalls) {
my $duration = $end{$key} - $start{$key};
if ($duration >= $threshold) {
@ -121,7 +121,7 @@ while (($key,$value) = each %start) {
$rows{$pid} = $rowscount;
$rowscount = $rowscount + 1;
}
$s = ($value - $firsttime) * $mult;
$s = ($start{$key} - $firsttime) * $mult;
$s2 = $s + 6;
$e = ($end{$key} - $firsttime) * $mult;
$w = $e - $s;