From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753253Ab1BAVfQ (ORCPT ); Tue, 1 Feb 2011 16:35:16 -0500 Received: from e31.co.us.ibm.com ([32.97.110.149]:47416 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752731Ab1BAVfP (ORCPT ); Tue, 1 Feb 2011 16:35:15 -0500 Subject: Re: [patch 25/28] posix clocks: Introduce a syscall for clock tuning. From: john stultz To: Thomas Gleixner Cc: LKML , Richard Cochran , Ingo Molnar , Peter Zijlstra , Alan Cox , Arnd Bergmann , Christoph Lameter , David Miller , Krzysztof Halasa , Rodolfo Giometti , Benjamin Herrenschmidt , Mike Frysinger , Paul Mackerras , Russell King In-Reply-To: <20110201134419.869804645@linutronix.de> References: <20110201134320.688829863@linutronix.de> <20110201134419.869804645@linutronix.de> Content-Type: text/plain; charset="UTF-8" Date: Tue, 01 Feb 2011 13:35:03 -0800 Message-ID: <1296596103.3336.72.camel@work-vm> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > > 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