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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 6A337C433DB for ; Wed, 24 Feb 2021 20:07:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 233BF64F28 for ; Wed, 24 Feb 2021 20:07:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235136AbhBXUHM (ORCPT ); Wed, 24 Feb 2021 15:07:12 -0500 Received: from mail.kernel.org ([198.145.29.99]:55902 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235195AbhBXUG4 (ORCPT ); Wed, 24 Feb 2021 15:06:56 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D309464F2E; Wed, 24 Feb 2021 20:06:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614197189; bh=2iYM7+rPPzb9zRWJHyALLlK17AlvPdA0VGoBKJqkNl0=; h=Date:From:To:Subject:In-Reply-To:From; b=sglWpnpvceFKaln0vF7TE+rMBorTO46C1sycoaEkHgeKUVMiVNbZyhS1Vs6BPSDnu w0/joEXelTJZkkseaLKpm5Ry/Y/rT0EztIdnEsbioJkpxV0Pmvr2snTqx2sSIreTzN FoDJXFfphM1hvNn9cmR5CGP4l1FGbLoVTyPxQT2s= Date: Wed, 24 Feb 2021 12:06:28 -0800 From: Andrew Morton To: akpm@linux-foundation.org, anshuman.khandual@arm.com, david@redhat.com, gustavoars@kernel.org, linux-mm@kvack.org, mhocko@kernel.org, mm-commits@vger.kernel.org, osalvador@suse.de, peterz@infradead.org, richard.weiyang@linux.alibaba.com, rppt@kernel.org, sam@ravnborg.org, tglx@linutronix.de, torvalds@linux-foundation.org Subject: [patch 107/173] video: fbdev: acornfb: remove free_unused_pages() Message-ID: <20210224200628.3noD6aLz6%akpm@linux-foundation.org> In-Reply-To: <20210224115824.1e289a6895087f10c41dd8d6@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: David Hildenbrand Subject: video: fbdev: acornfb: remove free_unused_pages() Patch series "mm: simplify free_highmem_page() and free_reserved_page()". Let's simplify and unify free_highmem_page() and free_reserved_page(). This patch (of 2): This function is never used and it is one of the last remaining user of __free_reserved_page(). Let's just drop it. Link: https://lkml.kernel.org/r/20210126182113.19892-1-david@redhat.com Link: https://lkml.kernel.org/r/20210126182113.19892-2-david@redhat.com Fixes: ffd29195ed720188 ("drivers/video/acornfb.c: remove dead code") Signed-off-by: David Hildenbrand Reviewed-by: Oscar Salvador Reviewed-by: Anshuman Khandual Cc: Thomas Gleixner Cc: "Peter Zijlstra (Intel)" Cc: Mike Rapoport Cc: Michal Hocko Cc: Wei Yang Cc: "Gustavo A. R. Silva" Cc: Sam Ravnborg Signed-off-by: Andrew Morton --- drivers/video/fbdev/acornfb.c | 34 -------------------------------- 1 file changed, 34 deletions(-) --- a/drivers/video/fbdev/acornfb.c~video-fbdev-acornfb-remove-free_unused_pages +++ a/drivers/video/fbdev/acornfb.c @@ -921,40 +921,6 @@ static int acornfb_detect_monitortype(vo return 4; } -/* - * This enables the unused memory to be freed on older Acorn machines. - * We are freeing memory on behalf of the architecture initialisation - * code here. - */ -static inline void -free_unused_pages(unsigned int virtual_start, unsigned int virtual_end) -{ - int mb_freed = 0; - - /* - * Align addresses - */ - virtual_start = PAGE_ALIGN(virtual_start); - virtual_end = PAGE_ALIGN(virtual_end); - - while (virtual_start < virtual_end) { - struct page *page; - - /* - * Clear page reserved bit, - * set count to 1, and free - * the page. - */ - page = virt_to_page(virtual_start); - __free_reserved_page(page); - - virtual_start += PAGE_SIZE; - mb_freed += PAGE_SIZE / 1024; - } - - printk("acornfb: freed %dK memory\n", mb_freed); -} - static int acornfb_probe(struct platform_device *dev) { unsigned long size; _