Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763745AbZFMVGk (ORCPT ); Sat, 13 Jun 2009 17:06:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754434AbZFMVGb (ORCPT ); Sat, 13 Jun 2009 17:06:31 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:35511 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752015AbZFMVGb (ORCPT ); Sat, 13 Jun 2009 17:06:31 -0400 Date: Sat, 13 Jun 2009 23:00:18 +0200 From: Ingo Molnar To: Mike Frysinger Cc: Peter Zijlstra , Paul Mackerras , linux-kernel@vger.kernel.org Subject: Re: [PATCH] scripts/checksyscalls.sh: only whine perf_counter_open when supported Message-ID: <20090613210018.GA1962@elte.hu> References: <1244806169-12232-1-git-send-email-vapier@gentoo.org> <20090612120507.GH16044@elte.hu> <8bd0f97a0906120816w26d91530nf1e1967470beb99c@mail.gmail.com> <20090612152134.GA23483@elte.hu> <8bd0f97a0906120829p628751e9gb557f6a14e98fae2@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8bd0f97a0906120829p628751e9gb557f6a14e98fae2@mail.gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 895 Lines: 25 * Mike Frysinger wrote: > On Fri, Jun 12, 2009 at 11:21, Ingo Molnar wrote: > > * Mike Frysinger wrote: > >> the perf counter code explicitly requires: > >> ... > >> ?- support for atomic64 types (unless i missed something, x86 is the > >> only 32bit system that supports these) > > > > A wrapper suffices - should probably be librarized into lib/. > > wonder if we can trick Arnd into doing that ... FYI, Paul has posted the patches for generic atomic64_t today. So the barrier of entry to perfcounters enablement is really low now, even for 32-bit architectures without 64-bit atomic ops. Ingo -- 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/