linux-kernel - Re: [PATCH] timeconst.pl: correct reversal of USEC_TO_HZ and HZ_TO

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Message-ID: <47B21CC1.80901@gmail.com>
Date:	Tue, 12 Feb 2008 20:25:05 -0200
From:	"Carlos R. Mafra" <crmafra@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Eric Piel <E.A.B.Piel@...elft.nl>
Subject: Re: [PATCH] timeconst.pl: correct reversal of USEC_TO_HZ and HZ_TO_USEC

H. Peter Anvin wrote:
> The USEC_TO_HZ and HZ_TO_USEC constant sets were mislabelled, with
> seriously incorrect results.  This among other things manifested
> itself as cpufreq not working when a tickless kernel was configured.
> 
> Signed-off-by: H. Peter Anvin <hpa@...or.com>


Tested-by: Carlos R. Mafra <crmafra@....unesp.br>


> ---
>  kernel/timeconst.pl |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/kernel/timeconst.pl b/kernel/timeconst.pl
> index 62b1287..4146803 100644
> --- a/kernel/timeconst.pl
> +++ b/kernel/timeconst.pl
> @@ -339,7 +339,7 @@ sub output($@)
>  	print "\n";
>  
>  	foreach $pfx ('HZ_TO_MSEC','MSEC_TO_HZ',
> -		      'USEC_TO_HZ','HZ_TO_USEC') {
> +		      'HZ_TO_USEC','USEC_TO_HZ') {
>  		foreach $bit (32, 64) {
>  			foreach $suf ('MUL', 'ADJ', 'SHR') {
>  				printf "#define %-23s %s\n",

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