Received: by 2002:a25:7ec1:0:0:0:0:0 with SMTP id z184csp5725694ybc; Wed, 27 Nov 2019 08:29:58 -0800 (PST) X-Google-Smtp-Source: APXvYqyOhQds1MVZJPbtdgB0odEPuu1tpFnGQ9oS8m9QzeyT8doZzHCfAfOI+6kBOnaHk+f06owC X-Received: by 2002:a17:906:b253:: with SMTP id ce19mr23814818ejb.61.1574872197898; Wed, 27 Nov 2019 08:29:57 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1574872197; cv=none; d=google.com; s=arc-20160816; b=AawN5xj1apo8/goVrMnbE6s73gD1xmEcH4xLgmkFSyQkgaGIe3qk6fXR6JsAG5wwVm mqDnx7SD/l8RY0GA/TN2w9DEabFImp7XP5jLyUvM3BHvUSsWPdS771HI4IOj720iyyUV yBcC+7ypCfiv9n6sqlM5z+sewpuDZbC1I8O46IFKrixjNbcDYYh69X9FVfkCsiqNtrw0 o2hqBeCvX9s+f8vxzzxkmUZBnkNF9BgCpagqjTHT+JH/bT2N4yKaC9uPATkBYHpJdwDb RzeMG+6wNofGPLNamZMDpkCpVmGs8fLsRZHrggI1QEVFHrlLgPzd0ugG6Zd/6ClnWdo4 dPEg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=+NfqSF1vGNNsATvExnnxepiIUhwQHzkf7l4TAAEfHXo=; b=g+O0uxm4XdP6fhh1YutvSZL5FwxrtxqjFSF6t9CO0mL7nJQYXVVAEiFBbp6ALlRIpw 1zdWZMmh2kSpiALL6Ocub/8920mpM6telvWfaFLc/pSh7ApqV2xUbz3jp0n9gdjTfm6J 5ykxm1Ay5DZ9kBJnl041HLq4JMdDGd+IPlZPpFCXXpEys8IzZkpuB6jAnvvXRBKIDe1t h8ZFFZOL3a/AnGqFAkdp6WaEGj9a9jwR2Edlkaw5tL2/jjX1xWcZ3236ryoXGgjCofR0 ST4ccSEA3Qps1IzpgwjUVxWkchw+BZhkuWl1aKlwt1xWXIFRPk7IGVnBsaqzHK72RkWm kWjg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p22si10952842eds.33.2019.11.27.08.29.34; Wed, 27 Nov 2019 08:29:57 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727085AbfK0Q0M (ORCPT + 99 others); Wed, 27 Nov 2019 11:26:12 -0500 Received: from gentwo.org ([3.19.106.255]:39458 "EHLO gentwo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726514AbfK0Q0M (ORCPT ); Wed, 27 Nov 2019 11:26:12 -0500 Received: by gentwo.org (Postfix, from userid 1002) id DCF9B3EF16; Wed, 27 Nov 2019 16:26:11 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id DC2BB3EC1C; Wed, 27 Nov 2019 16:26:11 +0000 (UTC) Date: Wed, 27 Nov 2019 16:26:11 +0000 (UTC) From: Christopher Lameter X-X-Sender: cl@www.lameter.com To: Michal Hocko cc: LKML , linux-mm@kvack.org Subject: Re: SLUB: purpose of sysfs events on cache creation/removal In-Reply-To: <20191127162400.GT20912@dhcp22.suse.cz> Message-ID: References: <20191126121901.GE20912@dhcp22.suse.cz> <20191126165420.GL20912@dhcp22.suse.cz> <20191127162400.GT20912@dhcp22.suse.cz> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 27 Nov 2019, Michal Hocko wrote: > Would you mind a patch that would add a kernel command line parameter > that would work like memcg_sysfs_enabled? The default for the config > would be on. Or it would be preferrable to simply drop only events? Just drop the events may be best. Then we know if someone is using it.