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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 69755C3A5A1 for ; Wed, 28 Aug 2019 13:13:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 39A7222DA7 for ; Wed, 28 Aug 2019 13:13:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="egv11MIO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726512AbfH1NNW (ORCPT ); Wed, 28 Aug 2019 09:13:22 -0400 Received: from mail-qk1-f193.google.com ([209.85.222.193]:41454 "EHLO mail-qk1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726341AbfH1NNV (ORCPT ); Wed, 28 Aug 2019 09:13:21 -0400 Received: by mail-qk1-f193.google.com with SMTP id g17so2298754qkk.8 for ; Wed, 28 Aug 2019 06:13:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=YBqrcxU4Xb5zORXVVA1t4RQ7TSRR+xPq1ZjNisEiAD4=; b=egv11MIOLBOnSyI7yp6jNWxNWyhFVfp4I2aQAeA15GJCwUbQW7zUMqOUdXvSySltgP 0n/cyrmEIrvITun+js2IMxEHwnYpnZxjzUKJbP+hOxuCUKEdlhG0y/4XUSRM1ezVUVX9 nywkGU6bt53Cs+1Ou3rqKiJFc3aL+MhzewNQQg9KpDXUCRmfjmfI0JoBjxd4SPLHMtCm 7hn4rOoVrPs/nPMgyMngu8fGkY1DzWFilOu3eJAlp/ODdg3+Z+HxigyFU7x8aswaHBVG flHZlVK1zYkyTQm8TmAxSUmilcviZaZK9zgcbhpKIYTdIA/SeLSAbblAnQxqbzMSz1ht 400Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=YBqrcxU4Xb5zORXVVA1t4RQ7TSRR+xPq1ZjNisEiAD4=; b=CxoKXqZLB3X2vzZqIrih2bi89+GLftO1DMRvQLLMP2H/SAZNRCUtkzwR75tZzd41k/ CKDg7iCpD/rhgdxR+R9rpSHYYYVqyFZp0Bb2Iwa8u6rX4gBSX4V/DJ8M88CwqommIaMl 8QmF9B2hGEpGVPtRpzEHxZmydA10mADaG4N5FrpQzQtGhncHXlc6ReKhv2Ndw+1fsREb 32KvSPmFyL61z/vTkPL5JSR8GBGHUM32EXrEK3tuQRmLGl0gaAIU0O0xezTcjB6NJrUS khP/8zrtUio+7CMw81YQgoe383zCigJ6RBrQ7NupjRQK9IjxLofN0EoVN722sc7TPFIM mR1w== X-Gm-Message-State: APjAAAX42tw3oKfSUM2IlGA/hyano6myntw+lEmeAI3Bu5b4HtFFKjdt tU6eoEJ89XgUMx1WHmlc2yk= X-Google-Smtp-Source: APXvYqwVPG6NaQlkBJFOkZw5IaU7o9usfA4FvRSsKpkotOwmHAnHsmFQqNQKFzD7jR2QbWKnthpdyA== X-Received: by 2002:a37:4ed3:: with SMTP id c202mr3756103qkb.457.1566998000423; Wed, 28 Aug 2019 06:13:20 -0700 (PDT) Received: from quaco.ghostprotocols.net ([179.97.35.50]) by smtp.gmail.com with ESMTPSA id z187sm1248633qke.99.2019.08.28.06.13.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Aug 2019 06:13:19 -0700 (PDT) From: Arnaldo Carvalho de Melo X-Google-Original-From: Arnaldo Carvalho de Melo Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id CAA3B40916; Wed, 28 Aug 2019 10:13:17 -0300 (-03) Date: Wed, 28 Aug 2019 10:13:17 -0300 To: Peter Zijlstra Cc: Namhyung Kim , Ingo Molnar , LKML , Jiri Olsa , Alexander Shishkin , Stephane Eranian , Tejun Heo , Li Zefan , Johannes Weiner , Adrian Hunter Subject: Re: [PATCH 1/9] perf/core: Add PERF_RECORD_CGROUP event Message-ID: <20190828131317.GA5632@kernel.org> References: <20190828073130.83800-1-namhyung@kernel.org> <20190828073130.83800-2-namhyung@kernel.org> <20190828094459.GG2369@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190828094459.GG2369@hirez.programming.kicks-ass.net> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Wed, Aug 28, 2019 at 11:44:59AM +0200, Peter Zijlstra escreveu: > On Wed, Aug 28, 2019 at 04:31:22PM +0900, Namhyung Kim wrote: > > To support cgroup tracking, add CGROUP event to save a link between > > cgroup path and inode number. The attr.cgroup bit was also added to > > enable cgroup tracking from userspace. > > > > This event will be generated when a new cgroup becomes active. > > Userspace might need to synthesize those events for existing cgroups. > > > > As aux_output change is also going on, I just added the bit here as > > well to remove possible conflicts later. > > Why do we want this? Yeah, I'd resolve the conflict later, to avoid mixing things like this. - Arnaldo