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From: "Jörg-Volker Peetz" <jvpeetz@web.de>
To: linux-kernel@vger.kernel.org
Cc: lkml <linux-kernel@vger.kernel.org>,
	Roman Zippel <zippel@linux-m68k.org>, Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH 3/5] cleanups ntp.c (from Ingo)
Date: Sat, 15 Mar 2008 10:32:42 +0100	[thread overview]
Message-ID: <47DB97BA.3080109@web.de> (raw)
In-Reply-To: <1205554210.6122.85.camel@localhost.localdomain>

john stultz wrote:
> Make this file more readable by applying a consistent coding style.
> 
> No code changed.
> 
> Signed-off-by: Ingo Molnar <mingo@elte.hu>
> 
> Merged on top of Roman's very similar cleanups.
> (In other words: Blame John for the merge screwups).
> 
> Signed-off-by: John Stultz <johnstul@us.ibm.com>
> 
> 
> Index: linux-2.6/kernel/time/ntp.c
> ===================================================================
<snip>
> @@ -193,21 +197,20 @@ void second_overflow(void)
>  	 * Compute the phase adjustment for the next second. The offset is
>  	 * reduced by a fixed factor times the time constant.
>  	 */
> -	tick_length = tick_length_base;
> -	time_adj = shift_right(time_offset, SHIFT_PLL + time_constant);
> -	time_offset -= time_adj;
> -	tick_length += time_adj;
> +	tick_length	= tick_length_base;
> +	time_adj	= shift_right(time_offset, SHIFT_PLL + time_constant);
> +	time_offset	-= time_adj;
> +	tick_length	+= time_adj;
>  
>  	if (unlikely(time_adjust)) {
> -		if (time_adjust > MAX_TICKADJ) {
> -			time_adjust -= MAX_TICKADJ;
> -			tick_length += MAX_TICKADJ_SCALED;
> -		} else if (time_adjust < -MAX_TICKADJ) {
> -			time_adjust += MAX_TICKADJ;
> -			tick_length -= MAX_TICKADJ_SCALED;
> +		if (time_adjust > max_tickadj) {
> +			time_adjust -= max_tickadj;
> +			tick_length += scale_tickadj(max_tickadj);
> +		} else if (time_adjust < -max_tickadj) {
> +			time_adjust += max_tickadj;
> +			tick_length -= scale_tickadj(max_tickadj);
>  		} else {
> -			tick_length += (s64)(time_adjust * NSEC_PER_USEC /
> -					NTP_INTERVAL_FREQ) << NTP_SCALE_SHIFT;
> +			tick_length += scale_tickadj(time_adjust);
>  			time_adjust = 0;
>  		}
>  	}
<snip>

Since you are at it, isn't "time_adj" a poor name since you also have a 
"time_adjust"?
-- 
Regards,
Jörg-Volker.


  parent reply	other threads:[~2008-03-15  9:33 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-15  4:04 [PATCH 0/5] time/ntp changes john stultz
2008-03-15  4:05 ` [PATCH 1/5] split clocksource adjustment from clockosurce mult john stultz
2008-03-15  4:06   ` [PATCH 2/5] introduce CLOCK_MONOTONIC_RAW john stultz
2008-03-15  4:10     ` [PATCH 3/5] cleanups ntp.c (from Ingo) john stultz
2008-03-15  4:12       ` [PATCH 4/5] ntp.c code flow clenaups " john stultz
2008-03-15  4:15         ` [PATCH 5/5] make more ntp values static john stultz
2008-03-15  5:09           ` Roman Zippel
2008-03-15  4:52         ` [PATCH 4/5] ntp.c code flow clenaups (from Ingo) Roman Zippel
2008-03-15  5:04           ` John Stultz
2008-03-15 12:39         ` Ingo Oeser
2008-03-15 17:24           ` Roman Zippel
2008-03-15  5:06       ` [PATCH 3/5] cleanups ntp.c " Roman Zippel
2008-03-15  9:32       ` Jörg-Volker Peetz [this message]
2008-03-15 17:23         ` Roman Zippel
2008-03-15  4:50     ` [PATCH 2/5] introduce CLOCK_MONOTONIC_RAW Roman Zippel
2008-03-18  2:03       ` john stultz
2008-03-18  2:27         ` john stultz
2008-03-26  3:41         ` Roman Zippel
2008-03-15  4:28   ` [PATCH 1/5] split clocksource adjustment from clockosurce mult Roman Zippel
2008-03-15  5:07     ` John Stultz

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