Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751158AbWHBEfE (ORCPT ); Wed, 2 Aug 2006 00:35:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751156AbWHBEfB (ORCPT ); Wed, 2 Aug 2006 00:35:01 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:28626 "EHLO e3.ny.us.ibm.com") by vger.kernel.org with ESMTP id S1751153AbWHBEe7 (ORCPT ); Wed, 2 Aug 2006 00:34:59 -0400 Subject: Re: [PATCH] RTC: Add mmap method to rtc character driver From: john stultz To: "H. Peter Anvin" Cc: Dave Airlie , Neil Horman , Segher Boessenkool , linux-kernel@vger.kernel.org, a.zummo@towertech.it, jg@freedesktop.org In-Reply-To: <44D0296F.70707@zytor.com> References: <20060725174100.GA4608@hmsreliant.homelinux.net> <03BCDC7F-13D9-42FC-86FC-30C76FD3B3B8@kernel.crashing.org> <20060725182833.GE4608@hmsreliant.homelinux.net> <44C66C91.8090700@zytor.com> <20060725192138.GI4608@hmsreliant.homelinux.net> <20060725194733.GJ4608@hmsreliant.homelinux.net> <21d7e9970607251304n5681bf44gc751c21fd79be99d@mail.gmail.com> <1154490859.17171.12.camel@cog.beaverton.ibm.com> <44D0296F.70707@zytor.com> Content-Type: text/plain Date: Tue, 01 Aug 2006 21:34:52 -0700 Message-Id: <1154493292.17171.15.camel@cog.beaverton.ibm.com> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-4.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 720 Lines: 20 On Tue, 2006-08-01 at 21:26 -0700, H. Peter Anvin wrote: > john stultz wrote: > > > > Only lightly tested, so beware, and I've only added support so far for > > the TSC (so don't be surprised if you don't see a performance > > improvement if you using a different clocksource). > > > > We should be able to use HPET in userspace, too. Oh yes, HPET and Cyclone as well. It just requires mapping their mmio page as user readable. I just haven't gotten to it yet. :) -john - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/