From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ua0-f198.google.com (mail-ua0-f198.google.com [209.85.217.198]) by kanga.kvack.org (Postfix) with ESMTP id 0FC156B0038 for ; Sat, 18 Nov 2017 15:33:52 -0500 (EST) Received: by mail-ua0-f198.google.com with SMTP id j14so2787472uag.2 for ; Sat, 18 Nov 2017 12:33:52 -0800 (PST) Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id o19sor2236655vke.242.2017.11.18.12.33.50 for (Google Transport Security); Sat, 18 Nov 2017 12:33:50 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20171103090915.uuaqo56phdbt6gnf@dhcp22.suse.cz> References: <20171101053244.5218-1-slandden@gmail.com> <20171103063544.13383-1-slandden@gmail.com> <20171103090915.uuaqo56phdbt6gnf@dhcp22.suse.cz> From: Shawn Landden Date: Sat, 18 Nov 2017 12:33:50 -0800 Message-ID: Subject: Re: [RFC v2] prctl: prctl(PR_SET_IDLE, PR_IDLE_MODE_KILLME), for stateless idle loops Content-Type: text/plain; charset="UTF-8" Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org On Fri, Nov 3, 2017 at 2:09 AM, Michal Hocko wrote: > On Thu 02-11-17 23:35:44, Shawn Landden wrote: >> 16 bytes per process is kinda spendy, but I want to keep >> lru behavior, which mem_score_adj does not allow. When a supervisor, >> like Android's user input is keeping track this can be done in user-space. >> It could be pulled out of task_struct if an cross-indexing additional >> red-black tree is added to support pid-based lookup. > > This is still an abuse and the patch is wrong. We really do have an API > to use I fail to see why you do not use it. When I looked at wait_queue_head_t it was 20 bytes. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org