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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 0D943C169C4 for ; Tue, 29 Jan 2019 09:45:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C73A62084A for ; Tue, 29 Jan 2019 09:45:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728016AbfA2Jpt (ORCPT ); Tue, 29 Jan 2019 04:45:49 -0500 Received: from ozlabs.org ([203.11.71.1]:55077 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725298AbfA2Jps (ORCPT ); Tue, 29 Jan 2019 04:45:48 -0500 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPSA id 43phSn3Rdlz9s9h; Tue, 29 Jan 2019 20:45:45 +1100 (AEDT) From: Michael Ellerman To: Ravi Bangoria , acme@kernel.org Cc: jolsa@redhat.com, namhyung@kernel.org, dzickus@redhat.com, fowles@inreach.com, jmario@redhat.com, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, maddy@linux.vnet.ibm.com Subject: Re: [PATCH] perf mem/c2c: Fix perf_mem_events to support powerpc In-Reply-To: References: <20190114041402.14033-1-ravi.bangoria@linux.ibm.com> Date: Tue, 29 Jan 2019 20:45:44 +1100 Message-ID: <874l9rsson.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ravi Bangoria writes: > On 1/14/19 9:44 AM, Ravi Bangoria wrote: >> Powerpc hw does not have inbuilt latency filter (--ldlat) for mem-load >> event and, perf_mem_events by default includes ldlat=30 which is >> causing failure on powerpc. Refactor code to support perf mem/c2c on >> powerpc. >> >> This patch depends on kernel side changes done my Madhavan: >> https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-December/182596.html >> >> Signed-off-by: Ravi Bangoria > > > Arnaldo / Michael, Any thoughts? I haven't merged the kernel patch, I think because Maddy told me not to because it would break the userspace tooling :) What is the actual dependency between them? ie. should we merge the kernel fix first or second or what? cheers