[ 3.5.y.z extended stable ] Patch "timeconst.pl: Eliminate Perl warning" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Tue Feb 26 16:13:21 UTC 2013

This is a note to let you know that I have just added a patch titled

    timeconst.pl: Eliminate Perl warning

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see



>From ad189263dca20732c250e4ce15935792016c6abe Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa at linux.intel.com>
Date: Thu, 7 Feb 2013 17:14:08 -0800
Subject: [PATCH] timeconst.pl: Eliminate Perl warning

commit 63a3f603413ffe82ad775f2d62a5afff87fd94a0 upstream.

defined(@array) is deprecated in Perl and gives off a warning.
Restructure the code to remove that warning.

[ hpa: it would be interesting to revert to the timeconst.bc script.
  It appears that the failures reported by akpm during testing of
  that script was due to a known broken version of make, not a problem
  with bc.  The Makefile rules could probably be restructured to avoid
  the make bug, or it is probably old enough that it doesn't matter. ]

Reported-by: Andi Kleen <ak at linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa at linux.intel.com>
Cc: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
 kernel/timeconst.pl | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/timeconst.pl b/kernel/timeconst.pl
index eb51d76..3f42652 100644
--- a/kernel/timeconst.pl
+++ b/kernel/timeconst.pl
@@ -369,10 +369,8 @@ if ($hz eq '--can') {
 		die "Usage: $0 HZ\n";

-	@val = @{$canned_values{$hz}};
-	if (!defined(@val)) {
-		@val = compute_values($hz);
-	}
+	$cv = $canned_values{$hz};
+	@val = defined($cv) ? @$cv : compute_values($hz);
 	output($hz, @val);
 exit 0;

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