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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 8F3C1C43461 for ; Wed, 2 Sep 2020 16:58:56 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4F20B207EA for ; Wed, 2 Sep 2020 16:58:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="j+gDEbgs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4F20B207EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C777490000E; Wed, 2 Sep 2020 12:58:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B663690000C; Wed, 2 Sep 2020 12:58:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 914A290000E; Wed, 2 Sep 2020 12:58:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0147.hostedemail.com [216.40.44.147]) by kanga.kvack.org (Postfix) with ESMTP id 6B5F290000C for ; Wed, 2 Sep 2020 12:58:41 -0400 (EDT) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 2A608249A for ; Wed, 2 Sep 2020 16:58:41 +0000 (UTC) X-FDA: 77218730442.17.men36_1d0b549270a2 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin17.hostedemail.com (Postfix) with ESMTP id E1FF9180D0184 for ; Wed, 2 Sep 2020 16:58:38 +0000 (UTC) X-HE-Tag: men36_1d0b549270a2 X-Filterd-Recvd-Size: 4885 Received: from hqnvemgate25.nvidia.com (hqnvemgate25.nvidia.com [216.228.121.64]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Wed, 2 Sep 2020 16:58:37 +0000 (UTC) Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate25.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 02 Sep 2020 09:57:49 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 02 Sep 2020 09:58:36 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 02 Sep 2020 09:58:36 -0700 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 2 Sep 2020 16:58:36 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 2 Sep 2020 16:58:36 +0000 Received: from rcampbell-dev.nvidia.com (Not Verified[10.110.48.66]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 02 Sep 2020 09:58:35 -0700 From: Ralph Campbell To: , , , CC: Jerome Glisse , John Hubbard , Alistair Popple , Christoph Hellwig , Jason Gunthorpe , Bharata B Rao , Ben Skeggs , Shuah Khan , Andrew Morton , Ralph Campbell Subject: [PATCH v2 5/7] mm/thp: add THP allocation helper Date: Wed, 2 Sep 2020 09:58:28 -0700 Message-ID: <20200902165830.5367-6-rcampbell@nvidia.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200902165830.5367-1-rcampbell@nvidia.com> References: <20200902165830.5367-1-rcampbell@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1599065869; bh=AqRXCg6GLzY664VpcSD1HwaoxjnWuT8Who7nUY/mMhU=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=j+gDEbgshqv6j9BKS6Hho08hw+GarJ9Su5bE5Bz2D9/bk/TQbUqPxFPczN7Fzuzhy CLHGBsz7XhvJtsAgIsggSiaKYC7YopW9Ywu/sXsbSkQs57uIp8vsDo3h1zkSlaSGDg E5WcSuZHv5pvtnWN2EB/leplK/aNF0sAJUvAbsO0Hnl+GJSxw1bEhZZbbEfTh5EsOw C274oZyIhT9l0esc8u7Nnr7J97LXj9a/Axylap/Mikm75nhpAxg7ttzvuFs8m7MmzE Ii7TqL3Enjp6VuISWzs7jZtyzwD7yqpidBH2nWdc1oYERGqUbM2FQgRbTR1gkLu99+ iAwBTL6ZGGacQ== X-Rspamd-Queue-Id: E1FF9180D0184 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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: Transparent huge page allocation policy is controlled by several sysfs variables. Rather than expose these to each device driver that needs to allocate THPs, provide a helper function. Signed-off-by: Ralph Campbell --- include/linux/gfp.h | 10 ++++++++++ mm/huge_memory.c | 14 ++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 67a0774e080b..6faf4ea5501b 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -562,6 +562,16 @@ extern struct page *alloc_pages_vma(gfp_t gfp_mask, in= t order, alloc_pages_vma(gfp_mask, 0, vma, addr, numa_node_id(), false) #define alloc_page_vma_node(gfp_mask, vma, addr, node) \ alloc_pages_vma(gfp_mask, 0, vma, addr, node, false) +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +extern struct page *alloc_transhugepage(struct vm_area_struct *vma, + unsigned long addr); +#else +static inline struct page *alloc_transhugepage(struct vm_area_struct *vma, + unsigned long addr) +{ + return NULL; +} +#endif =20 extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order); extern unsigned long get_zeroed_page(gfp_t gfp_mask); diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 1e848cc0c3dc..e4e1fe199dc1 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -764,6 +764,20 @@ vm_fault_t do_huge_pmd_anonymous_page(struct vm_fault = *vmf) return __do_huge_pmd_anonymous_page(vmf, page, gfp); } =20 +struct page *alloc_transhugepage(struct vm_area_struct *vma, + unsigned long haddr) +{ + gfp_t gfp; + struct page *page; + + gfp =3D alloc_hugepage_direct_gfpmask(vma); + page =3D alloc_hugepage_vma(gfp, vma, haddr, HPAGE_PMD_ORDER); + if (page) + prep_transhuge_page(page); + return page; +} +EXPORT_SYMBOL_GPL(alloc_transhugepage); + static void insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd, pfn_t pfn, pgprot_t prot, bool write, pgtable_t pgtable) --=20 2.20.1