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=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 E74A7C432C0 for ; Wed, 27 Nov 2019 16:26:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C1A35206E0 for ; Wed, 27 Nov 2019 16:26:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727095AbfK0Q0M (ORCPT ); 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.