From patchwork Tue Nov 17 16:29:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 11912813 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=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,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 4D4A5C2D0E4 for ; Tue, 17 Nov 2020 16:32:03 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D33CE2065C for ; Tue, 17 Nov 2020 16:32:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="C1fi90k0"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="sciECVqn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D33CE2065C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Bxk8XMzqhjIg2AjvipG6Ks8LnfmsPTN9ooBwRlRn2pk=; b=C1fi90k0N1B+AiLK1CVDL06pJ czbYiLsHmlw0e0iAycGEAgerutKtk97/Hiu9iZLNB9+fYqcm0gJlP2iE9DiWoq2Bc1A6erhPNfbWR 9SmXeGQCidT+Ezb3j71MGphjnWY64VMMLg/s1jvFFihFJnYZz+MJ9koSyNOwDTCXUvqRR70yTID+q wa3urRwOmpUrWjpSFM5bzaM/H69Ltu/WdMZArrisSRPZLQA9uZUPeD2hxiH66S/DBrgvm3ME7TaxI vhBCogmtpVE6fcexcdjTyiaqx686PdRysSqotaux1V3qf6NJpY1MCz64CR/ZKp/AvUF9pi6xTVxBN pd8zP6IuA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf3ta-0003dR-Pr; Tue, 17 Nov 2020 16:31:54 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kf3sc-0003Ba-NX; Tue, 17 Nov 2020 16:30:59 +0000 Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2F3282468D; Tue, 17 Nov 2020 16:30:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605630653; bh=04cpRhbeiZlEUHxMX5ApK31mWcN883+0jaWVCbDtYB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sciECVqnwtv8a/e0RE6sto5MbS5NhX+PypU+1bqUYU/Hy89aWXOLvM6zlLEAshLjs 4CmKoKvZ9jeyKqsja7yUjrdDkJPybN9JtzvXDHiBZhtzXwV4lxBdUFDHUad8iebvXO /Q/8iyEZyYpv7rB4tgdgnI0wruLN4PI0s8on25E8= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v9 6/9] secretmem: add memcg accounting Date: Tue, 17 Nov 2020 18:29:29 +0200 Message-Id: <20201117162932.13649-7-rppt@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201117162932.13649-1-rppt@kernel.org> References: <20201117162932.13649-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201117_113055_238379_77B10F8A X-CRM114-Status: GOOD ( 23.36 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , David Hildenbrand , Peter Zijlstra , Catalin Marinas , Dave Hansen , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, "H. Peter Anvin" , Christopher Lameter , Shuah Khan , Thomas Gleixner , Elena Reshetova , linux-arch@vger.kernel.org, Tycho Andersen , linux-nvdimm@lists.01.org, Will Deacon , x86@kernel.org, Matthew Wilcox , Mike Rapoport , Ingo Molnar , Michael Kerrisk , Arnd Bergmann , James Bottomley , Borislav Petkov , Alexander Viro , Andy Lutomirski , Paul Walmsley , "Kirill A. Shutemov" , Dan Williams , linux-arm-kernel@lists.infradead.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Palmer Dabbelt , linux-fsdevel@vger.kernel.org, Rick Edgecombe , Roman Gushchin , Mike Rapoport Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Mike Rapoport Account memory consumed by secretmem to memcg. The accounting is updated when the memory is actually allocated and freed. Signed-off-by: Mike Rapoport Acked-by: Roman Gushchin . --- mm/filemap.c | 3 ++- mm/secretmem.c | 36 +++++++++++++++++++++++++++++++++++- 2 files changed, 37 insertions(+), 2 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 249cf489f5df..cf7f1dc9f4b8 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -42,6 +42,7 @@ #include #include #include +#include #include "internal.h" #define CREATE_TRACE_POINTS @@ -844,7 +845,7 @@ static noinline int __add_to_page_cache_locked(struct page *page, page->mapping = mapping; page->index = offset; - if (!huge) { + if (!huge && !page_is_secretmem(page)) { error = mem_cgroup_charge(page, current->mm, gfp); if (error) goto error; diff --git a/mm/secretmem.c b/mm/secretmem.c index d4c44fc568a4..abf6ecdf70cb 100644 --- a/mm/secretmem.c +++ b/mm/secretmem.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -50,6 +51,32 @@ struct secretmem_ctx { static struct cma *secretmem_cma; +static int secretmem_account_pages(struct page *page, gfp_t gfp, int order) +{ + int err; + + err = memcg_kmem_charge_page(page, gfp, order); + if (err) + return err; + + /* + * seceremem caches are unreclaimable kernel allocations, so treat + * them as unreclaimable slab memory for VM statistics purposes + */ + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, + PAGE_SIZE << order); + + return 0; +} + +static void secretmem_unaccount_pages(struct page *page, int order) +{ + + mod_node_page_state(page_pgdat(page), NR_SLAB_UNRECLAIMABLE_B, + -PAGE_SIZE << order); + memcg_kmem_uncharge_page(page, order); +} + static int secretmem_pool_increase(struct secretmem_ctx *ctx, gfp_t gfp) { unsigned long nr_pages = (1 << PMD_PAGE_ORDER); @@ -62,10 +89,14 @@ static int secretmem_pool_increase(struct secretmem_ctx *ctx, gfp_t gfp) if (!page) return -ENOMEM; - err = set_direct_map_invalid_noflush(page, nr_pages); + err = secretmem_account_pages(page, gfp, PMD_PAGE_ORDER); if (err) goto err_cma_release; + err = set_direct_map_invalid_noflush(page, nr_pages); + if (err) + goto err_memcg_uncharge; + addr = (unsigned long)page_address(page); err = gen_pool_add(pool, addr, PMD_SIZE, NUMA_NO_NODE); if (err) @@ -82,6 +113,8 @@ static int secretmem_pool_increase(struct secretmem_ctx *ctx, gfp_t gfp) * won't fail */ set_direct_map_default_noflush(page, nr_pages); +err_memcg_uncharge: + secretmem_unaccount_pages(page, PMD_PAGE_ORDER); err_cma_release: cma_release(secretmem_cma, page, nr_pages); return err; @@ -312,6 +345,7 @@ static void secretmem_cleanup_chunk(struct gen_pool *pool, int i; set_direct_map_default_noflush(page, nr_pages); + secretmem_unaccount_pages(page, PMD_PAGE_ORDER); for (i = 0; i < nr_pages; i++) clear_highpage(page + i);