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 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 07B2DC54E58 for ; Mon, 18 Mar 2024 14:26:14 +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=h8t33Jdz; 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=h8t33Jdz; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Tyxx040mdz3vln for ; Tue, 19 Mar 2024 01:26:12 +1100 (AEDT) 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=h8t33Jdz; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=h8t33Jdz; 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=bhe@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 4TyxrS2ZzTz3dS8 for ; Tue, 19 Mar 2024 01:22:16 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1710771733; 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=D/H22rgu+0Eg3oELZT1F8mB3L7t/pq1y95Fbs8e1Y/U=; b=h8t33JdzQNYI/XXXtkQogIv/XBZe0zqdlNRfCVfcYhsTs3Qv4tu2zfYAat65mwevz3rqbg dvNqVbSenuXhTrz6U+/hDpefijJbp8d1+bjDeWTriLR4HDahSoHY4hgx6UHT+v7BDzlsS/ RiIEUpjqpTx0eUE4uxv7lAQwBSbmz6g= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1710771733; 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=D/H22rgu+0Eg3oELZT1F8mB3L7t/pq1y95Fbs8e1Y/U=; b=h8t33JdzQNYI/XXXtkQogIv/XBZe0zqdlNRfCVfcYhsTs3Qv4tu2zfYAat65mwevz3rqbg dvNqVbSenuXhTrz6U+/hDpefijJbp8d1+bjDeWTriLR4HDahSoHY4hgx6UHT+v7BDzlsS/ RiIEUpjqpTx0eUE4uxv7lAQwBSbmz6g= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-43-gnPigdkEN5yTi6k7RKI_9g-1; Mon, 18 Mar 2024 10:22:09 -0400 X-MC-Unique: gnPigdkEN5yTi6k7RKI_9g-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4F4BF800265; Mon, 18 Mar 2024 14:22:08 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.116.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 65BA7492BD1; Mon, 18 Mar 2024 14:22:05 +0000 (UTC) From: Baoquan He To: linux-mm@kvack.org Subject: [PATCH 5/6] mm/mm_init.c: remove unneeded calc_memmap_size() Date: Mon, 18 Mar 2024 22:21:37 +0800 Message-ID: <20240318142138.783350-6-bhe@redhat.com> In-Reply-To: <20240318142138.783350-1-bhe@redhat.com> References: <20240318142138.783350-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 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: Baoquan He , x86@kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, rppt@kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Nobody calls calc_memmap_size() now. Signed-off-by: Baoquan He --- mm/mm_init.c | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/mm/mm_init.c b/mm/mm_init.c index 55a2b886b7a6..9ed4b9e77c4a 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -1331,26 +1331,6 @@ static void __init calculate_node_totalpages(struct pglist_data *pgdat, pr_debug("On node %d totalpages: %lu\n", pgdat->node_id, realtotalpages); } -static unsigned long __init calc_memmap_size(unsigned long spanned_pages, - unsigned long present_pages) -{ - unsigned long pages = spanned_pages; - - /* - * Provide a more accurate estimation if there are holes within - * the zone and SPARSEMEM is in use. If there are holes within the - * zone, each populated memory region may cost us one or two extra - * memmap pages due to alignment because memmap pages for each - * populated regions may not be naturally aligned on page boundary. - * So the (present_pages >> 4) heuristic is a tradeoff for that. - */ - if (spanned_pages > present_pages + (present_pages >> 4) && - IS_ENABLED(CONFIG_SPARSEMEM)) - pages = present_pages; - - return PAGE_ALIGN(pages * sizeof(struct page)) >> PAGE_SHIFT; -} - #ifdef CONFIG_TRANSPARENT_HUGEPAGE static void pgdat_init_split_queue(struct pglist_data *pgdat) { -- 2.41.0