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 08721C38145 for ; Wed, 7 Sep 2022 17:01:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229585AbiIGRBg (ORCPT ); Wed, 7 Sep 2022 13:01:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229567AbiIGRBf (ORCPT ); Wed, 7 Sep 2022 13:01:35 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C35FAD998; Wed, 7 Sep 2022 10:01:34 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id u9-20020a17090a1f0900b001fde6477464so18944151pja.4; Wed, 07 Sep 2022 10:01:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:from:to:cc:subject:date; bh=TqbLb+KgxPbnQGfynSMlarvTL8mplWrZYa3AXE4SSEA=; b=M0aSp3XVpFQ7bWIdvytb5uhz2wbLWyKSJsDmE9iidJ8FRw/dGS/Z3jvvkleFpXTenY QvgPAhYJNZLM593j1hyz554JcYK8lZ17U3nLGgfYdjLbBQ9qrvhmKVafghSFKOweQsDt 49OmiKoUXdb3cmQeHkvJODY4gw4stBvrtAKYgAcbjSZQqbBBEg3vrUP+5nqp+OAAsjUB 1Op9sgJ3u9W1LoKbhiLq2DFuc2BbWHEHEaWGHqZ6uBfV7XfBwtUlKt7iTyXLlYJh6nmM tRBVFjN8unCaFVD691+iDdrGPoPjsqPsGx0qb0NHCgUXsy5Kb3jqfIaZkSNQjtbTpZ2h vPCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:x-gm-message-state:from:to:cc :subject:date; bh=TqbLb+KgxPbnQGfynSMlarvTL8mplWrZYa3AXE4SSEA=; b=iSyS21ESlm2QaQNNzLBqWgNWTRIwrq05npo6udclExtiUXYqXLo13g+68G+LlZAOyF S+n9Po1Cm3AUMTLLg+n28AMOO9/AIYuO058d+8urNzRnfSYsUcoEGFip9ZNB7s368CMM QFXFEywUbnIp0ZjgksaxySnf+VITIkyyBfCOUvl7Je+piOi0TDVkkzYkuZzsPTDlniuV nRbo8CJyVPWwqugGYeJ0BkN4bpxeZL0K1UrYx+Q0hb4tsYRti87i4tT+pzNB1iX9cEe/ mEbv6vweQ5DXggNoPvM54hOj3OT/pFT+hqTUotFHIlYeZyiQpKKHEhuPAntIRhtZvUXP 6Hug== X-Gm-Message-State: ACgBeo20MZ9h6ir7xrjI7D3s6yxnYj3atXPUZPcwBF5B5nbgcfB4sQtf o9KbWnDqQHVyqfS9NErIZDI= X-Google-Smtp-Source: AA6agR5XuW96crLv372qzBHFxbIiWvRWgr6yOvfA1vq/ggrJyf5TJOCYQNT8b+wBNPtAq3IvAjOTpw== X-Received: by 2002:a17:90b:1c8e:b0:1f7:524f:bfcc with SMTP id oo14-20020a17090b1c8e00b001f7524fbfccmr5080854pjb.132.1662570093582; Wed, 07 Sep 2022 10:01:33 -0700 (PDT) Received: from localhost (2603-800c-1a02-1bae-a7fa-157f-969a-4cde.res6.spectrum.com. [2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id e10-20020a17090301ca00b0016dbdf7b97bsm12654950plh.266.2022.09.07.10.01.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Sep 2022 10:01:33 -0700 (PDT) Sender: Tejun Heo Date: Wed, 7 Sep 2022 07:01:31 -1000 From: Tejun Heo To: Alexei Starovoitov Cc: Yafang Shao , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Zefan Li , "open list:CONTROL GROUP (CGROUP)" , Network Development , bpf , linux-mm Subject: Re: [PATCH bpf-next v3 00/13] bpf: Introduce selectable memcg for bpf map Message-ID: References: <20220902023003.47124-1-laoar.shao@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Sep 07, 2022 at 09:27:09AM -0700, Alexei Starovoitov wrote: > On Wed, Sep 7, 2022 at 9:18 AM Tejun Heo wrote: > > > > Hello, > > > > On Wed, Sep 07, 2022 at 09:13:09AM -0700, Alexei Starovoitov wrote: > > > Hmm. We discussed this option already. We definitely don't want > > > to introduce an uapi knob that will allow anyone to skip memcg > > > accounting today and in the future. > > > > cgroup.memory boot parameter is how memcg provides last-resort workarounds > > for this sort of problems / regressions while they're being addressed. It's > > not a dynamically changeable or programmable thing. Just a boot time > > opt-out. That said, if you don't want it, you don't want it. > > ahh. boot param. > Are you suggesting a global off switch ? Like nosocket and nokmem. > That would be a different story. > Need to think more about it. It could be ok. Yeah, nobpf or sth like that. An equivalent cgroup.memory parameter. Thanks. -- tejun