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=-7.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 12B9FC433E0 for ; Thu, 4 Feb 2021 08:21:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8FF7D64DB2 for ; Thu, 4 Feb 2021 08:21:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8FF7D64DB2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C747C6B0005; Thu, 4 Feb 2021 03:21:35 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C25B06B006C; Thu, 4 Feb 2021 03:21:35 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B14306B006E; Thu, 4 Feb 2021 03:21:35 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0007.hostedemail.com [216.40.44.7]) by kanga.kvack.org (Postfix) with ESMTP id 997AA6B0005 for ; Thu, 4 Feb 2021 03:21:35 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 600CB1EE6 for ; Thu, 4 Feb 2021 08:21:35 +0000 (UTC) X-FDA: 77779891350.17.band32_1e145cf275da Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin17.hostedemail.com (Postfix) with ESMTP id 417C4180D0180 for ; Thu, 4 Feb 2021 08:21:35 +0000 (UTC) X-HE-Tag: band32_1e145cf275da X-Filterd-Recvd-Size: 4651 Received: from mail-pg1-f170.google.com (mail-pg1-f170.google.com [209.85.215.170]) by imf22.hostedemail.com (Postfix) with ESMTP for ; Thu, 4 Feb 2021 08:21:34 +0000 (UTC) Received: by mail-pg1-f170.google.com with SMTP id o21so179230pgn.12 for ; Thu, 04 Feb 2021 00:21:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:subject:to:cc:references:in-reply-to:mime-version :message-id:content-transfer-encoding; bh=XXkvcBKboNN7LGIeynhgZT6EpSB86akvi9IwRytyAz8=; b=LxvPH9bB5kAaZOYcJLU2iOG2OormPkekcFLSUlN6cpK/oqo551ZRevlJQSdTj9CxB1 rCfZlOPlLe/FAdkjd2tYzWS9LBxKvSFzufueWwEGAGkcWFAqv25IWvqpQyhSiMt4SAVS IpwD9JkOriCnJ+Q2+N5mwql7JWGZEvEdu+lsUSo2ZjViWm0HoCSwf31f0+Si9XG/N8Y+ ctZRHcpTf6yjXhE1LnhjgMfKCvchelCV6B1Rd/DFlkGhGVypKY6ORTk+GdVvtVOW0AFN N/inRTqZVWOdJbPmt5xeAky+ZVODprxaeWovrbG6up5GSTM5MOdsUH7PHg5NhFEcKaQX F6aQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:subject:to:cc:references:in-reply-to :mime-version:message-id:content-transfer-encoding; bh=XXkvcBKboNN7LGIeynhgZT6EpSB86akvi9IwRytyAz8=; b=J+B7hCOm0k1qBQv2mFmQQsHMvvxwQ1Ontk4mLZnW4nNwaD+rkgIixavP0w3Ox+t7nB JYsuuZCV703JhLRmQOVTWad9fBgsCeGvL1sW3ON7neGZksZKPB2HhntNhARczjx2F77y 3VWN/TSuHLDkOq62DTUt+PwuPBL4hSmLtwO6vU5RdCWYhWeqFdK/tMAZ1bk/4s80vEmI 1xE+QUtEsR57iWc2g3PEn/kXFz3s0V3Lj0oMLie0FTMEyzjkES50lU/z8ujWMs2eYt/u DA32LjOWLqmttRRkrrLjYfCymenMJnmq1U9AMFHDgovzPIybXpC7FaSMsFPQYKc18w4a Vukw== X-Gm-Message-State: AOAM533M5Sq66V820Uu0FrzO7dRI+P1tavs5nRwJlYpxS0aCfMagXlGO GN0OTxNDSbjseos4DifY/Bw= X-Google-Smtp-Source: ABdhPJyFh2UIalFWfH9S0Gigao8PrBaKb3QduCZYTwG0z0xvXFRe3aj70yzjXDYS3R0QrYEyG2SNLA== X-Received: by 2002:a63:1c13:: with SMTP id c19mr7570212pgc.359.1612426893809; Thu, 04 Feb 2021 00:21:33 -0800 (PST) Received: from localhost ([1.132.253.145]) by smtp.gmail.com with ESMTPSA id 72sm4819621pfw.170.2021.02.04.00.21.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Feb 2021 00:21:33 -0800 (PST) Date: Thu, 04 Feb 2021 18:21:25 +1000 From: Nicholas Piggin Subject: Re: [PATCH v2 0/5] shoot lazy tlbs To: linux-kernel@vger.kernel.org Cc: Anton Blanchard , linux-arch@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, Andy Lutomirski References: <20201214065312.270062-1-npiggin@gmail.com> In-Reply-To: <20201214065312.270062-1-npiggin@gmail.com> MIME-Version: 1.0 Message-Id: <1612426668.622xblt2lx.astroid@bobo.none> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 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: I'll ask Andrew to put this in -mm if no objections. The series now doesn't touch other archs in non-trivial ways, and core code is functionally not changed much / at all if the option is not selected so it's actually pretty simple aside from the powerpc change. Thanks, Nick Excerpts from Nicholas Piggin's message of December 14, 2020 4:53 pm: > This is another rebase, on top of mainline now (don't need the > asm-generic tree), and without any x86 or membarrier changes. > This makes the series far smaller and more manageable and > without the controversial bits. >=20 > Thanks, > Nick >=20 > Nicholas Piggin (5): > lazy tlb: introduce lazy mm refcount helper functions > lazy tlb: allow lazy tlb mm switching to be configurable > lazy tlb: shoot lazies, a non-refcounting lazy tlb option > powerpc: use lazy mm refcount helper functions > powerpc/64s: enable MMU_LAZY_TLB_SHOOTDOWN >=20 > arch/Kconfig | 30 ++++++++++ > arch/arm/mach-rpc/ecard.c | 2 +- > arch/powerpc/Kconfig | 1 + > arch/powerpc/kernel/smp.c | 2 +- > arch/powerpc/mm/book3s64/radix_tlb.c | 4 +- > fs/exec.c | 4 +- > include/linux/sched/mm.h | 20 +++++++ > kernel/cpu.c | 2 +- > kernel/exit.c | 2 +- > kernel/fork.c | 52 ++++++++++++++++ > kernel/kthread.c | 11 ++-- > kernel/sched/core.c | 88 ++++++++++++++++++++-------- > kernel/sched/sched.h | 4 +- > 13 files changed, 184 insertions(+), 38 deletions(-) >=20 > --=20 > 2.23.0 >=20 >=20