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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 71302C35240 for ; Thu, 30 Jan 2020 08:16:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47AE0206F0 for ; Thu, 30 Jan 2020 08:16:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="KtcHvisD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726865AbgA3IQ2 (ORCPT ); Thu, 30 Jan 2020 03:16:28 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:46344 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726863AbgA3IQ2 (ORCPT ); Thu, 30 Jan 2020 03:16:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=TCsQ3GzavAe26bRtqfddchOtZ1YoWhMpGMKjZxM60vI=; b=KtcHvisDsABiHx64Iuvyz6yaB X07tpTx9cNQomPHTclUK8DQVorusdFctcSZoMQgOUd77/FH5pTTe2VacSPBXFXU4NVnbmaaZI1JaO 914ynMtjZMtxIcliWLkqqu1cgy/+rt14w69YJnSkfcLDCu8gQfpfJePnfJocKNngud26WUUobBTW5 /f5KPthpaEi9byvQIifLgw3Qhp28h24Cx3EtF0m7we9PcOB7EfHcunkvE8MaluUR3GAYk0Z67sWW3 gFm+pW5G7wCZtoQU8EdS+n9G87ooGZi7w9d+9ErttwPCMGGSg4Vu8ki7jNHgxmC9TutETsihaM696 EFGmwzEhA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1ix4zx-0001t8-S7; Thu, 30 Jan 2020 08:16:26 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 710D03011DD; Thu, 30 Jan 2020 09:14:40 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 9B9522B7334D2; Thu, 30 Jan 2020 09:16:23 +0100 (CET) Date: Thu, 30 Jan 2020 09:16:23 +0100 From: Peter Zijlstra To: Michael Schmitz Cc: John Paul Adrian Glaubitz , Geert Uytterhoeven , Linux/m68k , Linux Kernel Development , Will Deacon Subject: Re: [PATCH 0/5] Rewrite Motorola MMU page-table layout Message-ID: <20200130081623.GW14879@hirez.programming.kicks-ass.net> References: <20200129103941.304769381@infradead.org> <20200129115412.GN14914@hirez.programming.kicks-ass.net> <20200129193109.GS14914@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-m68k-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-m68k@vger.kernel.org Hi Michael, On Thu, Jan 30, 2020 at 08:31:13PM +1300, Michael Schmitz wrote: > Not much difference: > > total used free shared buffers cached > Mem: 10712 10120 592 0 1860 2276 > -/+ buffers/cache: 5984 4728 > Swap: 2097144 1552 2095592 > > > vs. vanilla 5.5rc5: > total used free shared buffers cached > Mem: 10716 10104 612 0 1588 2544 > -/+ buffers/cache: 5972 4744 > Swap: 2097144 1296 2095848 > > By sheer coincidence, the boot with your patch series happened to run a full > filesystem check on the root filesystem, so I'd say it got a good workout > re: paging and swapping (even though it's just a paltry 4 GB). Sweet!, can I translate this into a Tested-by: from you? > Haven't tried any VM stress testing yet (not sure what to do for that; it's > been years since I tried that sort of stuff). I think, this not being SMP, doing what you just did tickled just about everything there is. There is one more potential issue with MMU-gather / TLB invalidate on m68k (and a whole bunch of other archs) and I have patches for that (although I now need to redo the m68k one. Meanwhile the build robot gifted me with a build issue, and Will had some nitpicks, so I'll go respin and repost these patches.