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bootgraph.pl: relax timing information requirements

This patch removes the assumption of the bootgraph.pl script that the
timing information reported by PRINTK_TIME will contain at least one
entry with a time of less than 100 seconds.

Not all boards correctly reset the system timer and in many cases the
inital times reported by PRINTK_TIME is high. When this occurs the
bootchart.pl script fails to give any useful output.

This patch sets the $firsttime variable to the largest value expected
by PRINTK_TIME

Signed-off-by: Andrew Murray <amurray@mpc-data.co.uk>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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commit c443453c6dc88576db540acc6ef40e1d2869e394 1 parent 28f65c1
Andrew Murray authored Jiri Kosina committed
Showing with 1 addition and 1 deletion.
  1. +1 −1  scripts/bootgraph.pl
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2  scripts/bootgraph.pl
@@ -44,7 +44,7 @@
my %type;
my $done = 0;
my $maxtime = 0;
-my $firsttime = 100;
+my $firsttime = 99999;
my $count = 0;
my %pids;
my %pidctr;
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