netdev - Re: [PATCH V7 2/8] posix clocks: introduce a syscall for clock tuning.

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Message-Id: <201012161651.31748.arnd@arndb.de>
Date:	Thu, 16 Dec 2010 16:51:31 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Richard Cochran <richardcochran@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	netdev@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Christoph Lameter <cl@...ux.com>,
	David Miller <davem@...emloft.net>,
	John Stultz <johnstul@...ibm.com>,
	Krzysztof Halasa <khc@...waw.pl>,
	Peter Zijlstra <peterz@...radead.org>,
	Rodolfo Giometti <giometti@...ux.it>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH V7 2/8] posix clocks: introduce a syscall for clock tuning.

On Thursday 16 December 2010, Richard Cochran wrote:
> A new syscall is introduced that allows tuning of a POSIX clock. The
> syscall is implemented for four architectures: arm, blackfin, powerpc,
> and x86.
> 
> The new syscall, clock_adjtime, takes two parameters, the clock ID,
> and a pointer to a struct timex. Any ADJTIMEX(2) operation may be
> requested via this system call, but various POSIX clocks may or may
> not support tuning.
> 
> Signed-off-by: Richard Cochran <richard.cochran@...cron.at>

The syscall implementation looks good to me.

Acked-by: Arnd Bergmann <arnd@...db.de>

It would be good to add it to include/asm-generic/unistd.h
as well, so that tile and future architectures get it, too.
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