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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B9BF8C3DA60 for ; Wed, 17 Jul 2024 22:03:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1ctkhs3wlFLcVrIka78jPbAfmE1O5HocZ4s9DqB9uvE=; b=DNceycKpIwoYW/ hW00dQYV5+Kkutf06ehOXwknc+xJQMFIBAOxpkhuPr2SopZvfUU7DqmqozhSHwsP9S3bh3wPNbmm+ QbiF+cudG2JAEMlNJIQ5VOFOEAxF07YwimeskQ8KrmuFcnGJrKwgXzOp+Uh5TNNEwmEJmaLfkRJy2 wh+iFRxIkbLAeMXJSxAVOriSa6UmFNRD2JuSMf9Kw8OUuJukahFxOeQ4+LLMMK8NqnOJm/0KCgZ7j JFu97kXzpS+JStrDdtEgiyWFsyQUXT24mdM+iAh059kQfD8I8YRFq+WCvshbBnuh1auVgm4+Hwf6/ TwT/Nsd7X90awsuop7Vg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sUCjl-0000000F3L3-1gBe; Wed, 17 Jul 2024 22:03:01 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sUCjQ-0000000F3Eg-1wwQ for linux-riscv@bombadil.infradead.org; Wed, 17 Jul 2024 22:02:40 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Content-Transfer-Encoding :MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Sender:Reply-To:Content-ID:Content-Description; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=Qc1wUAvXxoh8OwQQuECShNLC5Y ZGqbxvOOWr+CWb5yOGwsMQwzLZ40rA2Acf0nG6lqRQzGvo4XnAe3USa8abj9QjBF4rftPzS+CIqXL 6DFq7bPhK0Euu1o2ObrGmqQkmVKh2pT3meiuQj8XS1pAf6lJJvXDxnkDqAYGabiIX9Zn/Pjm34cqw 7kY7eaOKQjZp8lG5v53nrbffGztJ6jFYWzFeDFt9gLFncyPu4FBWD3CU4JfgM/0TJoSFGtQ+nheqW Tj2fpHJH4vBegUWwyKcB62vK8qVfQaKEUTivjXq0AHkdIg+R2mPDY5aWhZZegmzmLOz3D6Yv2BHyx uEMOskmQ==; Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sUCjL-00000002Q0I-2hvi for linux-riscv@lists.infradead.org; Wed, 17 Jul 2024 22:02:39 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721253749; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=ESRhlKtK2XbcqjHPvNhWyDnEIg6n6REXvrkJcQueiuwGAKzYFTile1c/uYc4T/kV0Vb7R7 ljjS0TdBuK0xxTMciaCUbc1FuubY4nbzqzD4YQl+Pnv8xtq/CSUkqO0FxolzY0RjvWQ6kQ zBJr1iOivcRXyRGHovl0bnLMeeOe9GA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721253749; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=ESRhlKtK2XbcqjHPvNhWyDnEIg6n6REXvrkJcQueiuwGAKzYFTile1c/uYc4T/kV0Vb7R7 ljjS0TdBuK0xxTMciaCUbc1FuubY4nbzqzD4YQl+Pnv8xtq/CSUkqO0FxolzY0RjvWQ6kQ zBJr1iOivcRXyRGHovl0bnLMeeOe9GA= Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-644-1c-2s5iXOEqY4HuuKMA50Q-1; Wed, 17 Jul 2024 18:02:27 -0400 X-MC-Unique: 1c-2s5iXOEqY4HuuKMA50Q-1 Received: by mail-qt1-f197.google.com with SMTP id d75a77b69052e-44aeacbf2baso259341cf.2 for ; Wed, 17 Jul 2024 15:02:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721253747; x=1721858547; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=YwblS76d78ZqSXZpy8sB2YLS/e8cIub9ufHKZ9IizHK3gWziajkEEpM+EjxUaQVKgS ljifBo3g+Rvoi/HiuMUAwwMubnwI5G6hiG54BoZnN3e3+JieHFy016GdqFBTVM8Hm7Ng HlP4zsBJgX1oLhm2ny5rudM9amSZs5u0qy3WeyymO58Vh4R6qzSJOGzApVEpZQXhmtMZ Yzf4nQN4EWvT/82JC2yV3qnbia4h7NbQo0vqGXWCns6GssVMPPwRuX5vrxL0BbTsFPj1 nQMxJ48jGlxZUAy6ZlhR0UGnZV48RzWtnfD+ZAyg3oNAT3XKjop1PiVYp/UhEs8AQvuH dLJw== X-Forwarded-Encrypted: i=1; AJvYcCWvpMMoDsSw7mXWULj/WMackqjzlTcZMHscBvrwfGrRBXmd8sWj3v8nurFNjhfqOoOvwazAph70U7vQy8w8NLXtSA1mXzgVHkZ8VPkIgl95 X-Gm-Message-State: AOJu0YwSpQT+3z6cYySYGWJn5JMRWHH5Utpwm4OIGjktP5iPAmrgH8Mj kgP06kc3QsWVXoUPFzO5FrbdLEZQG9fUQbbtKjfUCc+8aABpeVmBmQTSMntLUGXwwb4sYUFwO7r B5GM6s3/qtaPhNGcWU6DuwbAZi0dSDFH2CmsvjhP6iQ6Yc1mGQSNglR9qRMAYMYrZtw== X-Received: by 2002:a05:622a:3cd:b0:44f:89e3:e8d3 with SMTP id d75a77b69052e-44f89e3ebf3mr16472681cf.10.1721253746702; Wed, 17 Jul 2024 15:02:26 -0700 (PDT) X-Google-Smtp-Source: AGHT+IG7KLWkbU1UwJKSHrhdblARNi4OMqfXeCTcT+ovTUhvRHwOTG0GQKyZtUb2OdQ3d+/fWLwEbg== X-Received: by 2002:a05:622a:3cd:b0:44f:89e3:e8d3 with SMTP id d75a77b69052e-44f89e3ebf3mr16472521cf.10.1721253746301; Wed, 17 Jul 2024 15:02:26 -0700 (PDT) Received: from x1n.redhat.com (pool-99-254-121-117.cpe.net.cable.rogers.com. [99.254.121.117]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-44f5b83f632sm53071651cf.85.2024.07.17.15.02.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jul 2024 15:02:25 -0700 (PDT) From: Peter Xu To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Vlastimil Babka , peterx@redhat.com, David Hildenbrand , Oscar Salvador , linux-s390@vger.kernel.org, Andrew Morton , Matthew Wilcox , Dan Williams , Michal Hocko , linux-riscv@lists.infradead.org, sparclinux@vger.kernel.org, Alex Williamson , Jason Gunthorpe , x86@kernel.org, Alistair Popple , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, Ryan Roberts , Hugh Dickins , Axel Rasmussen Subject: [PATCH RFC 2/6] mm: PGTABLE_HAS_P[MU]D_LEAVES config options Date: Wed, 17 Jul 2024 18:02:15 -0400 Message-ID: <20240717220219.3743374-3-peterx@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240717220219.3743374-1-peterx@redhat.com> References: <20240717220219.3743374-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240717_230235_843887_BA7F56F0 X-CRM114-Status: GOOD ( 11.82 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Introduce two more sub-options for PGTABLE_HAS_HUGE_LEAVES: - PGTABLE_HAS_PMD_LEAVES: set when there can be PMD mappings - PGTABLE_HAS_PUD_LEAVES: set when there can be PUD mappings It will help to identify whether the current build may only want PMD helpers but not PUD ones, as these sub-options will also check against the arch support over HAVE_ARCH_TRANSPARENT_HUGEPAGE[_PUD]. Note that having them depend on HAVE_ARCH_TRANSPARENT_HUGEPAGE[_PUD] is still some intermediate step. The best way is to have an option say "whether arch XXX supports PMD/PUD mappings" and so on. However let's leave that for later as that's the easy part. So far, we use these options to stably detect per-arch huge mapping support. Signed-off-by: Peter Xu --- include/linux/huge_mm.h | 10 +++++++--- mm/Kconfig | 6 ++++++ 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 711632df7edf..37482c8445d1 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -96,14 +96,18 @@ extern struct kobj_attribute thpsize_shmem_enabled_attr; #define thp_vma_allowable_order(vma, vm_flags, tva_flags, order) \ (!!thp_vma_allowable_orders(vma, vm_flags, tva_flags, BIT(order))) -#ifdef CONFIG_PGTABLE_HAS_HUGE_LEAVES -#define HPAGE_PMD_SHIFT PMD_SHIFT +#ifdef CONFIG_PGTABLE_HAS_PUD_LEAVES #define HPAGE_PUD_SHIFT PUD_SHIFT #else -#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) #define HPAGE_PUD_SHIFT ({ BUILD_BUG(); 0; }) #endif +#ifdef CONFIG_PGTABLE_HAS_PMD_LEAVES +#define HPAGE_PMD_SHIFT PMD_SHIFT +#else +#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) +#endif + #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) #define HPAGE_PMD_NR (1<; Wed, 17 Jul 2024 22:02:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721253751; cv=none; b=CcEG0sVFNyecrhONezz0U9ek1JJwrx/Mtw52ZglcF/zWJ2pS74s8kN/Bd8F4AgOpnaZXC2C5c5TVPcUnTPLKQBhbwpDs90hXox757cze1BUvAE8HRYwLXgV7SuYo7/GsB46Kyw3QeAeYfkzYGNmrqhtJSpLrdwg0TvkE0PVaOFw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721253751; c=relaxed/simple; bh=K7ProdCJxZcSwLnZoqcS+egwgE3aFeaAcBdG7Gygzyo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sVSoWNBVo3eBVBfefM3gM1qJWmyb/EtiLqdN/vqUuFNPsqV7SJTMk5gmM5N/yAh1VuZZ9dNIom+ffqAojHq6W4KBni0XDIdSzN3+Mfhd8ppkPGPophwnTDLTnDyYzAX7VcheNy9MW9O/NRpsoOsr6nnCZcTB4HzrCH0uOZzqLYo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=EB5mQ+DO; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="EB5mQ+DO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721253748; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=EB5mQ+DOuFjJjq8xbmkGhy87jrnrnfqgEZKIbhBf1rVED1EYg2OCVvrxNVxgDQJ9dcsKmf Ei7ubkoBE8sGch1Qaxnzbl2omKUPWwJj1GS6+W72qWAWot2TfABa2MBp908z+8U4AoVyXo aF/INSV0GdnJLT97N8NxxeXLyCkHWio= Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-361-RLFWfIqhMhqYCj1LAiXbXQ-1; Wed, 17 Jul 2024 18:02:27 -0400 X-MC-Unique: RLFWfIqhMhqYCj1LAiXbXQ-1 Received: by mail-qt1-f197.google.com with SMTP id d75a77b69052e-448335bb53aso257641cf.0 for ; Wed, 17 Jul 2024 15:02:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721253747; x=1721858547; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=K0RI0TM3sLbx0K1EEGSHvlb1AGFxU+q5M9yr4QdGC9h9F7E09CDemS6YnNezPM7Hlw NTpXeqiZuWP3LOjeaTiCmyklRUWqfk8H0RBz/3ZZmFxBMP1wuS4VuzWatLMlQ0m4SYkq FxUWHZ9krioo+GGVbtKcXP/rs/UbAirj7RtoP1IGA1cm5KEEEB9PRQjafw2ycbgS3+RG IJUh7bRPgafr5WyzPYIjbLK5IGw3uLBH4fKY2sYJUMEycT45hFMISbzb04aS/R5jubej 9d3LYrtv+qGvj0RD/ycc7yHZcp3/uJ25Dca/Y7BlwialRuA4yev2Ih+PKNFyBj1fjgE8 q0jg== X-Forwarded-Encrypted: i=1; AJvYcCWY3McZKqa62OdiRXigx2FpTF6a9lR+zkx/fuM6UCj24efSL4iycAEFeb87vGKAfmWSAgG7/qp1Kq6YfeqlRanfgjPY0XtWgUdZJA== X-Gm-Message-State: AOJu0Yzyw+C/7e6nrjT26v/k7CPAdvqiHoQtZ/gClakTPstKyAGmEHu+ KUfrbycXURiwJRaKLxbZiHh36S+RBtq0gmZdB3PU7Do50zUkrxN6ZfUN60ZG3ddYQ+wvon+jmzg mxAv6X71rYhKJHhG7cPfhV3sPZvAftHz0oq+te8Y4CtRxwfBOkW64RB/+U0M= X-Received: by 2002:a05:622a:3cd:b0:44f:89e3:e8d3 with SMTP id d75a77b69052e-44f89e3ebf3mr16472701cf.10.1721253746702; Wed, 17 Jul 2024 15:02:26 -0700 (PDT) X-Google-Smtp-Source: AGHT+IG7KLWkbU1UwJKSHrhdblARNi4OMqfXeCTcT+ovTUhvRHwOTG0GQKyZtUb2OdQ3d+/fWLwEbg== X-Received: by 2002:a05:622a:3cd:b0:44f:89e3:e8d3 with SMTP id d75a77b69052e-44f89e3ebf3mr16472521cf.10.1721253746301; Wed, 17 Jul 2024 15:02:26 -0700 (PDT) Received: from x1n.redhat.com (pool-99-254-121-117.cpe.net.cable.rogers.com. [99.254.121.117]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-44f5b83f632sm53071651cf.85.2024.07.17.15.02.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jul 2024 15:02:25 -0700 (PDT) From: Peter Xu To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Vlastimil Babka , peterx@redhat.com, David Hildenbrand , Oscar Salvador , linux-s390@vger.kernel.org, Andrew Morton , Matthew Wilcox , Dan Williams , Michal Hocko , linux-riscv@lists.infradead.org, sparclinux@vger.kernel.org, Alex Williamson , Jason Gunthorpe , x86@kernel.org, Alistair Popple , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, Ryan Roberts , Hugh Dickins , Axel Rasmussen Subject: [PATCH RFC 2/6] mm: PGTABLE_HAS_P[MU]D_LEAVES config options Date: Wed, 17 Jul 2024 18:02:15 -0400 Message-ID: <20240717220219.3743374-3-peterx@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240717220219.3743374-1-peterx@redhat.com> References: <20240717220219.3743374-1-peterx@redhat.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Introduce two more sub-options for PGTABLE_HAS_HUGE_LEAVES: - PGTABLE_HAS_PMD_LEAVES: set when there can be PMD mappings - PGTABLE_HAS_PUD_LEAVES: set when there can be PUD mappings It will help to identify whether the current build may only want PMD helpers but not PUD ones, as these sub-options will also check against the arch support over HAVE_ARCH_TRANSPARENT_HUGEPAGE[_PUD]. Note that having them depend on HAVE_ARCH_TRANSPARENT_HUGEPAGE[_PUD] is still some intermediate step. The best way is to have an option say "whether arch XXX supports PMD/PUD mappings" and so on. However let's leave that for later as that's the easy part. So far, we use these options to stably detect per-arch huge mapping support. Signed-off-by: Peter Xu --- include/linux/huge_mm.h | 10 +++++++--- mm/Kconfig | 6 ++++++ 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 711632df7edf..37482c8445d1 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -96,14 +96,18 @@ extern struct kobj_attribute thpsize_shmem_enabled_attr; #define thp_vma_allowable_order(vma, vm_flags, tva_flags, order) \ (!!thp_vma_allowable_orders(vma, vm_flags, tva_flags, BIT(order))) -#ifdef CONFIG_PGTABLE_HAS_HUGE_LEAVES -#define HPAGE_PMD_SHIFT PMD_SHIFT +#ifdef CONFIG_PGTABLE_HAS_PUD_LEAVES #define HPAGE_PUD_SHIFT PUD_SHIFT #else -#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) #define HPAGE_PUD_SHIFT ({ BUILD_BUG(); 0; }) #endif +#ifdef CONFIG_PGTABLE_HAS_PMD_LEAVES +#define HPAGE_PMD_SHIFT PMD_SHIFT +#else +#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) +#endif + #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) #define HPAGE_PMD_NR (1< X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B0607C3DA5D for ; Wed, 17 Jul 2024 22:03:57 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=BYyIlfsc; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=BYyIlfsc; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4WPVMJ2hVpz3dBD for ; Thu, 18 Jul 2024 08:03:56 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=BYyIlfsc; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=BYyIlfsc; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=redhat.com (client-ip=170.10.129.124; helo=us-smtp-delivery-124.mimecast.com; envelope-from=peterx@redhat.com; receiver=lists.ozlabs.org) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4WPVKg2sZtz30TZ for ; Thu, 18 Jul 2024 08:02:31 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721253748; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=BYyIlfscfu0TlSzpQLATgGYot4scna3XiKQ9+i8j7Kd1FnfBNzEcnnhjNGtAcQ9dcPKMgB wYUrlFK67D2BmPKzIbutVrx8bkXkDcVHU4aQTkrjsuVrGFk8y9DgXjR+zwpPh/01PK0FtV IyrfauPoiksfnaK/WTQ9fO65TRju1zQ= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721253748; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=BYyIlfscfu0TlSzpQLATgGYot4scna3XiKQ9+i8j7Kd1FnfBNzEcnnhjNGtAcQ9dcPKMgB wYUrlFK67D2BmPKzIbutVrx8bkXkDcVHU4aQTkrjsuVrGFk8y9DgXjR+zwpPh/01PK0FtV IyrfauPoiksfnaK/WTQ9fO65TRju1zQ= Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-343-4a0NnKZkN0GgCYgoYmODAA-1; Wed, 17 Jul 2024 18:02:27 -0400 X-MC-Unique: 4a0NnKZkN0GgCYgoYmODAA-1 Received: by mail-qt1-f197.google.com with SMTP id d75a77b69052e-448335bb53aso257651cf.0 for ; Wed, 17 Jul 2024 15:02:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721253747; x=1721858547; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1QImmTBB9J6ICz0B3Smrm8OMXXoPNwmhbbZRF0rUpNQ=; b=ALBEYdCUwQuJ3LIAC+EMbBKp4OKbnzBfjndcSNXyjkt6uP+Oj/LoyQj02b4InNZCsL fHheg68q9TKBmRUes0dImXk5qSKlvSVR5ilD1H7YvB5Cga01Ln09n4NQyR4fYGh5vRL7 mYVfFVzzn4Nai3annUvBXquLtZbESRBYhy98+qGCmB0oaFEA/FD8GusKes2HG/HiaWLu UeUSG/WstVy2z9kBOv6dvM8UC5ozIMc7KcBxcuIQhRlm9FBoGiog277kQnZghYQ8snQI HQQZwzRN183u3YG/qFpndN+JbXVG2tMeJaumJSVht2nZVS85fbNIuuLG8J6ltnpxPhox 1urQ== X-Forwarded-Encrypted: i=1; AJvYcCXxroDglgGJc0HCKaWE6eThHeu+W/RTBlJqweSCLPo5xIOIKf3m61KdNt99tJ+o4hErSp/7D9a/9kpXvCOFQvAjEUfPa0qdiokHtRmgdA== X-Gm-Message-State: AOJu0YxjpqO2kRPswbUiPP+TtvHUdA6JxLD26B7adtokazU6X46ziVF+ mR+PiNykefQNFPYTqITrk4kg4KtxBUo7l0SrYuVPwCaImCzHbFPuhSKP1/Ui6GwLbOQytnEhQOA 5wQcut2qBlW/DaovmXJ602V8rz3MN/r5oS+cjAH7CSz+k4VjmNXa7+zB38Yq2X4Q= X-Received: by 2002:a05:622a:3cd:b0:44f:89e3:e8d3 with SMTP id d75a77b69052e-44f89e3ebf3mr16472731cf.10.1721253746704; Wed, 17 Jul 2024 15:02:26 -0700 (PDT) X-Google-Smtp-Source: AGHT+IG7KLWkbU1UwJKSHrhdblARNi4OMqfXeCTcT+ovTUhvRHwOTG0GQKyZtUb2OdQ3d+/fWLwEbg== X-Received: by 2002:a05:622a:3cd:b0:44f:89e3:e8d3 with SMTP id d75a77b69052e-44f89e3ebf3mr16472521cf.10.1721253746301; Wed, 17 Jul 2024 15:02:26 -0700 (PDT) Received: from x1n.redhat.com (pool-99-254-121-117.cpe.net.cable.rogers.com. [99.254.121.117]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-44f5b83f632sm53071651cf.85.2024.07.17.15.02.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jul 2024 15:02:25 -0700 (PDT) From: Peter Xu To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH RFC 2/6] mm: PGTABLE_HAS_P[MU]D_LEAVES config options Date: Wed, 17 Jul 2024 18:02:15 -0400 Message-ID: <20240717220219.3743374-3-peterx@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240717220219.3743374-1-peterx@redhat.com> References: <20240717220219.3743374-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org, Alistair Popple , Ryan Roberts , David Hildenbrand , x86@kernel.org, Hugh Dickins , peterx@redhat.com, Michal Hocko , Alex Williamson , linux-riscv@lists.infradead.org, Matthew Wilcox , Jason Gunthorpe , sparclinux@vger.kernel.org, Axel Rasmussen , Andrew Morton , linuxppc-dev@lists.ozlabs.org, Dan Williams , Vlastimil Babka , Oscar Salvador Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Introduce two more sub-options for PGTABLE_HAS_HUGE_LEAVES: - PGTABLE_HAS_PMD_LEAVES: set when there can be PMD mappings - PGTABLE_HAS_PUD_LEAVES: set when there can be PUD mappings It will help to identify whether the current build may only want PMD helpers but not PUD ones, as these sub-options will also check against the arch support over HAVE_ARCH_TRANSPARENT_HUGEPAGE[_PUD]. Note that having them depend on HAVE_ARCH_TRANSPARENT_HUGEPAGE[_PUD] is still some intermediate step. The best way is to have an option say "whether arch XXX supports PMD/PUD mappings" and so on. However let's leave that for later as that's the easy part. So far, we use these options to stably detect per-arch huge mapping support. Signed-off-by: Peter Xu --- include/linux/huge_mm.h | 10 +++++++--- mm/Kconfig | 6 ++++++ 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 711632df7edf..37482c8445d1 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -96,14 +96,18 @@ extern struct kobj_attribute thpsize_shmem_enabled_attr; #define thp_vma_allowable_order(vma, vm_flags, tva_flags, order) \ (!!thp_vma_allowable_orders(vma, vm_flags, tva_flags, BIT(order))) -#ifdef CONFIG_PGTABLE_HAS_HUGE_LEAVES -#define HPAGE_PMD_SHIFT PMD_SHIFT +#ifdef CONFIG_PGTABLE_HAS_PUD_LEAVES #define HPAGE_PUD_SHIFT PUD_SHIFT #else -#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) #define HPAGE_PUD_SHIFT ({ BUILD_BUG(); 0; }) #endif +#ifdef CONFIG_PGTABLE_HAS_PMD_LEAVES +#define HPAGE_PMD_SHIFT PMD_SHIFT +#else +#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) +#endif + #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) #define HPAGE_PMD_NR (1<