linux-kernel - [PATCH] Bootgraph.pl bug fix

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Message-Id: <1307655610-28446-1-git-send-email-amurray@mpcdata.com>
Date:	Thu,  9 Jun 2011 22:40:10 +0100
From:	Andrew Murray <amurray@...data.com>
To:	trivial@...nel.org
Cc:	linux-embedded@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Murray <amurray@...data.com>,
	Andrew Murray <amurray@...-data.co.uk>
Subject: [PATCH] Bootgraph.pl bug fix

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@...-data.co.uk>
---
 scripts/bootgraph.pl |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
index 12caa82..b78fca9 100644
--- a/scripts/bootgraph.pl
+++ b/scripts/bootgraph.pl
@@ -44,7 +44,7 @@ my %end;
 my %type;
 my $done = 0;
 my $maxtime = 0;
-my $firsttime = 100;
+my $firsttime = 99999;
 my $count = 0;
 my %pids;
 my %pidctr;
-- 
1.7.4.1

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