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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 91E79C433DB for ; Wed, 31 Mar 2021 09:52:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2E02F61962 for ; Wed, 31 Mar 2021 09:52:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E02F61962 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 721D86B007E; Wed, 31 Mar 2021 05:52:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6F8AB6B0081; Wed, 31 Mar 2021 05:52:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5999E6B0082; Wed, 31 Mar 2021 05:52:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0191.hostedemail.com [216.40.44.191]) by kanga.kvack.org (Postfix) with ESMTP id 3B0976B007E for ; Wed, 31 Mar 2021 05:52:02 -0400 (EDT) Received: from smtpin39.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id CA0B75DDA for ; Wed, 31 Mar 2021 09:52:01 +0000 (UTC) X-FDA: 77979703242.39.CCD7C93 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by imf03.hostedemail.com (Postfix) with ESMTP id 2107AC0001FE for ; Wed, 31 Mar 2021 09:51:59 +0000 (UTC) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1617184319; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=n1O7Ro6mrGBXJy3LP3Zw2Gkl3YAtQijGkEfBpifq0EY=; b=HOyvQwSa53zJ3yf71cTgELVGcLqHXdkEK2CEu0gp8OOSYvuiixqKkqMfNgPS0F8oVFPIHE jmTzygMsSqwM+rt29Adn27OOdO49isF18RvQg0mAQfmkFgpaJNv4mh1DRS9+lAtrRi6b+P Ro21ZHuRiMHNvQUb+nXtLIzOIg3JEvJeGMMyri2/ypbeOCuJMZvchRNPnovTvqdE1BbA7T R2vKVR4tyr+SiXlTslxxbG0DHokYavrSaZNNT1G4SUzhnFFcwg5e15WaZHNZwyf9UTXZbL xavqaUR4MieS1A7hev8sMd33SCgzb1Gb+gQgVJS1eWXoPhtyx53w8qC//dfFAw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1617184319; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=n1O7Ro6mrGBXJy3LP3Zw2Gkl3YAtQijGkEfBpifq0EY=; b=b37v2WvjQZmtY/D9COwHoRQgG0LNzM16wZTVkFlEwRlC91LuvoB0tJpX9LKQezq8LIoIc1 pYKfVfp3jHfyD4Cg== To: Mel Gorman , Ingo Molnar , Peter Zijlstra Cc: Linux-MM , Linux-RT-Users , LKML , Chuck Lever , Jesper Dangaard Brouer , Matthew Wilcox Subject: Re: [RFC PATCH 0/6] Use local_lock for pcp protection and reduce stat overhead In-Reply-To: <20210331085213.GZ3697@techsingularity.net> References: <20210329120648.19040-1-mgorman@techsingularity.net> <20210331085213.GZ3697@techsingularity.net> Date: Wed, 31 Mar 2021 11:51:59 +0200 Message-ID: <87a6qj6474.ffs@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 2107AC0001FE X-Stat-Signature: izz33ppkuk7xy6shfkqz4xxwen4a6e6x Received-SPF: none (linutronix.de>: No applicable sender policy available) receiver=imf03; identity=mailfrom; envelope-from=""; helo=galois.linutronix.de; client-ip=193.142.43.55 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617184319-716732 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Mar 31 2021 at 09:52, Mel Gorman wrote: > Ingo, Thomas or Peter, is there any chance one of you could take a look > at patch "[PATCH 2/6] mm/page_alloc: Convert per-cpu list protection to > local_lock" from this series? It's partially motivated by PREEMPT_RT. More > details below. Sure.