Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp265188pxf; Wed, 31 Mar 2021 02:53:34 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxI/Ph+0vAueckow7gdIfDlhNFUwTKyZaNWpjgk84TSZKXuEqaI6493KU4KQEFZk/+g777t X-Received: by 2002:a17:906:814b:: with SMTP id z11mr2605507ejw.290.1617184414402; Wed, 31 Mar 2021 02:53:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1617184414; cv=none; d=google.com; s=arc-20160816; b=PFREpOGba3uDwMPviaFv1BqAlF9MgHEQD0tDjjS5L4dAQCNBeP8VlkYFR1u2T6K4hS yfdrkilMxQ4cHAyOrjYJkOBqCC5pohRiNQaplBc5B+yGnDD3XC0FYZhyXvl1rRnXDjOi 2Herqegd96x70MHRy9pcDcSSUxSKmX2zoy2dFvPBkA3BVfVRth/JJZaz4Nac0Tggvo/n q1NwXEDDmaC+zfUMF30ug6+XTwzomGzeNTiAY86gCqtSHILgRQEqUm4hcMLGwbNKfoSA 6iiQRMFUJh9fW/mCyA+aSonXArMKFVnQlxoHUn+rDFyYctXY0/hv0Vsv1YFucGSaMEu5 XWPA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:references :in-reply-to:subject:cc:to:dkim-signature:dkim-signature:from; bh=n1O7Ro6mrGBXJy3LP3Zw2Gkl3YAtQijGkEfBpifq0EY=; b=PqkcNJVXXD7BYuD0l6xIR6lWbd4c43DASZHKwQBbzwG9WjcQf330PwZ1u5RTFNZ1f7 WZA6ZKQiLbpYJfmjrMA3yIBm7P7caL0xvfhY0Y7viHP+siLzlAcbOr22JetTDI4+q7Ix nfNUFGBagVQmhNeALK+yvjeQXd0vY4pRy3k1R+O/pVS6w4+TnLUPaD2yW+0PtOJrWQBE okwpTEYAxc2vj54Cx8mKjK7I0ROZhwm9H/aV3/mu98BN3bGrqaB9xhpDSecSEwz1LYLZ nogDWx51GlBbjc8QC8ox6J9C9AHvt/dE6Vjf/DpOamrX2rM2AarPzpWTJQHtYioJDcuu OL3g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=HOyvQwSa; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e header.b=b37v2Wvj; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id n5si1268829eji.285.2021.03.31.02.53.12; Wed, 31 Mar 2021 02:53:34 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=HOyvQwSa; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e header.b=b37v2Wvj; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234800AbhCaJwO (ORCPT + 99 others); Wed, 31 Mar 2021 05:52:14 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:50468 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234796AbhCaJwA (ORCPT ); Wed, 31 Mar 2021 05:52:00 -0400 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.