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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64F2AC77B7D for ; Mon, 15 May 2023 06:24:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239400AbjEOGY3 (ORCPT ); Mon, 15 May 2023 02:24:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229829AbjEOGY0 (ORCPT ); Mon, 15 May 2023 02:24:26 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 24E4F12B; Sun, 14 May 2023 23:24:19 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9495B4B3; Sun, 14 May 2023 23:25:03 -0700 (PDT) Received: from [10.163.71.10] (unknown [10.163.71.10]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9B4DD3F7BD; Sun, 14 May 2023 23:24:10 -0700 (PDT) Message-ID: <2dafd371-173e-1592-23d2-939b8a81dcbe@arm.com> Date: Mon, 15 May 2023 11:54:07 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH V9 00/10] arm64/perf: Enable branch stack sampling Content-Language: en-US To: Will Deacon Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, Mark Brown , James Clark , Rob Herring , Marc Zyngier , Suzuki Poulose , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , linux-perf-users@vger.kernel.org References: <20230315051444.1683170-1-anshuman.khandual@arm.com> <20230411130326.GA22736@willie-the-truck> From: Anshuman Khandual In-Reply-To: <20230411130326.GA22736@willie-the-truck> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/11/23 18:33, Will Deacon wrote: > Hi Anshuman > > On Wed, Mar 15, 2023 at 10:44:34AM +0530, Anshuman Khandual wrote: >> This series enables perf branch stack sampling support on arm64 platform >> via a new arch feature called Branch Record Buffer Extension (BRBE). All >> relevant register definitions could be accessed here. >> >> https://developer.arm.com/documentation/ddi0601/2021-12/AArch64-Registers >> >> This series applies on 6.3-rc1 after applying the following patch from Mark >> which allows enums in SysregFields blocks in sysreg tools. >> >> https://lore.kernel.org/all/20230306114836.2575432-1-mark.rutland@arm.com/ > > As mentioned by Mark at: > > https://lore.kernel.org/r/ZB2sGrsbr58ttoWI@FVFF77S0Q05N > > this conflicts with supporting PMUv3 on AArch32. Please can you rebase onto > for-next/perf, which will mean moving this driver back into drivers/perf/ > now? Hi Will, I am back from a long vacation, will go through the earlier discussions on this and rework the series as required. - Anshuman