linux-kernel - Re: [patch 25/28] posix clocks: Introduce a syscall for clock tuning.

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Message-ID: <1296596103.3336.72.camel@work-vm>
Date:	Tue, 01 Feb 2011 13:35:03 -0800
From:	john stultz <johnstul@...ibm.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Richard Cochran <richard.cochran@...cron.at>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	David Miller <davem@...emloft.net>,
	Krzysztof Halasa <khc@...waw.pl>,
	Rodolfo Giometti <giometti@...ux.it>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Mike Frysinger <vapier@...too.org>,
	Paul Mackerras <paulus@...ba.org>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [patch 25/28] posix clocks: Introduce a syscall for clock
 tuning.

On Tue, 2011-02-01 at 13:52 +0000, Thomas Gleixner wrote:
> plain text document attachment
> (posix-clocks-introduce-a-syscall-for-clock-tuning.patch)
> From: Richard Cochran <richardcochran@...il.com>
> 
> A new syscall is introduced that allows tuning of a POSIX clock. The
> new call, 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.
> 
> [ tglx: Adapted to the posix-timer cleanup series. Avoid copy_to_user
>   	in the error case ]

Acked-by: John Stultz <johnstul@...ibm.com>



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