Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752863Ab0ATO2Q (ORCPT ); Wed, 20 Jan 2010 09:28:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752706Ab0ATO2P (ORCPT ); Wed, 20 Jan 2010 09:28:15 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:55290 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752646Ab0ATO2O (ORCPT ); Wed, 20 Jan 2010 09:28:14 -0500 Subject: Re: [PATCH/RFC v1 0/2] Human readable performance event description in sysfs From: Peter Zijlstra To: =?UTF-8?Q?Micha=C5=82?= Nazarewicz Cc: Russell King - ARM Linux , Jamie Iles , jpihet@mvista.com, p.osciak@samsung.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, kyungmin.park@samsung.com, mingo@elte.hu, m.szyprowski@samsung.com, linux-arm-kernel@lists.infradead.org, Tomasz Fujak In-Reply-To: <1263996979.4283.1066.camel@laptop> References: <1263978706-15499-1-git-send-email-t.fujak@samsung.com> <1263978999.4283.823.camel@laptop> <20100120133145.GE4089@wear.picochip.com> <1263994779.4283.1057.camel@laptop> <20100120135553.GA22897@n2100.arm.linux.org.uk> <1263996080.4283.1064.camel@laptop> <1263996979.4283.1066.camel@laptop> Content-Type: text/plain; charset="UTF-8" Date: Wed, 20 Jan 2010 15:26:49 +0100 Message-ID: <1263997609.4283.1067.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1108 Lines: 22 On Wed, 2010-01-20 at 15:16 +0100, Peter Zijlstra wrote: > On Wed, 2010-01-20 at 15:09 +0100, Michał Nazarewicz wrote: > > On Wed, 20 Jan 2010 15:01:20 +0100, Peter Zijlstra wrote: > > > It seems to me userspace might care about the exact platform they're > > > running on. > > > > In my humble opinion, user space should never care about platform it's > > running on. Interfaces provided by kernel should suffice to implement > > abstraction layer between user space and hardware. If we abandon that > > we're back in DOS times. But hey, again, that's just my opinion. > > Well, you're completely right. But the often sad reality is that perfect > abstraction is either impossible or prohibitively expensive. And then there is the simple matter of knowing what kind of box it is without having to resort to a screwdriver or worse. -- 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/