From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 54FD2C433E0 for ; Tue, 11 Aug 2020 11:02:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2EBF82075D for ; Tue, 11 Aug 2020 11:02:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="nnG0xX/t" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728648AbgHKLC4 (ORCPT ); Tue, 11 Aug 2020 07:02:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728559AbgHKLC4 (ORCPT ); Tue, 11 Aug 2020 07:02:56 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F6EEC06174A for ; Tue, 11 Aug 2020 04:02:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=lt8wHkIyCIxj/2BuJAaCTMhwAvgeabZ4hhroohQEExc=; b=nnG0xX/tjPSiIdvRpowmv8FHjp dl0w3Gd1Gms4vzzzsfuDfVi5JHhGZq6O+JV0Rr1DWlM/lIDJTMuYQzJ2PQB9/szxngx6B/ANObyQi cZBhmpjWfaHEYx7fJgACSYd8xOLW7rAR4m0vvjO/Xjod7kaaEk2pOHQ8zacbLE7HEc0q+bOYxGrxJ S8RGEO4DhfXL9tDZ1vEhhbv6lBJRrLsDGmKDxI2jbMXdm47j+K13oYY1oXrMKlyrf9pFhkY/mLsC2 j/qEw3yPnDtRf07XpYS5gHOu2s9++RnAbVHv57qKFa1ujHVAfCpZ4TdGnRerWGtd3N/ppkrD1JIP0 DUXxSZAw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1k5S3M-0006xO-Mq; Tue, 11 Aug 2020 11:02:49 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 84357300DAE; Tue, 11 Aug 2020 13:02:46 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 3A75F20BFC4E4; Tue, 11 Aug 2020 13:02:46 +0200 (CEST) Date: Tue, 11 Aug 2020 13:02:46 +0200 From: peterz@infradead.org To: Jiri Olsa Cc: Rob Herring , "linux-kernel@vger.kernel.org" , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Namhyung Kim Subject: Re: [RFC] libperf: Add support for user space counter access Message-ID: <20200811110246.GD2674@hirez.programming.kicks-ass.net> References: <20200807230517.57114-1-robh@kernel.org> <20200808102208.GA619980@krava> <20200811105027.GD699846@krava> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200811105027.GD699846@krava> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 11, 2020 at 12:50:27PM +0200, Jiri Olsa wrote: > if it works for all events, which I'm not sure of That's what we have cap_user_rdpmc for.