Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761188Ab1D3BuI (ORCPT ); Fri, 29 Apr 2011 21:50:08 -0400 Received: from aspirin.dii.utk.edu ([160.36.0.81]:36673 "EHLO aspirin.dii.utk.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761118Ab1D3BuH (ORCPT ); Fri, 29 Apr 2011 21:50:07 -0400 Date: Fri, 29 Apr 2011 21:49:29 -0400 (EDT) From: Vince Weaver To: Borislav Petkov cc: Ingo Molnar , torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Stephane Eranian , Andi Kleen , Thomas Gleixner Subject: Re: re-enable Nehalem raw Offcore-Events support In-Reply-To: <20110429221642.GA10751@liondog.tnic> Message-ID: References: <20110429164227.GA25491@elte.hu> <20110429221642.GA10751@liondog.tnic> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1348 Lines: 32 On Fri, 29 Apr 2011, Borislav Petkov wrote: > On Fri, Apr 29, 2011 at 06:42:27PM +0200, Ingo Molnar wrote: > > "Thinking is hard, lets go shopping^W exporting raw ABIs." > We're always bitching about Linux usability and now when it comes down > to yet another case where this can be done right for a change, and perf > people are trying to do something productive, you come waving hands > loudly at Linus with revert requests instead of helping. This is as > productive as trying to shoot yourself in the foot. Have I proposed that the "perf" tool be changed at all? No. Never. I proposed that the interface to allow raw access to offcore events _not_ be disabled so that advanced tools can access it directly. I don't care how perf works. Nor do I care how many pointless generic events get added to the kernel (other than being annoyed about it taking up extra bytes in my kernel image). Reverting this patch would have absolutely no bearing on "perf", the usability of perf, or anything that any normal user sees. I'm not sure how the argument is even getting framed that way. Vince -- 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/