From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934159AbcBDF6O (ORCPT ); Thu, 4 Feb 2016 00:58:14 -0500 Received: from mail-pf0-f176.google.com ([209.85.192.176]:34439 "EHLO mail-pf0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934129AbcBDF5b (ORCPT ); Thu, 4 Feb 2016 00:57:31 -0500 From: Joonsoo Kim X-Google-Original-From: Joonsoo Kim To: Andrew Morton Cc: David Rientjes , Christian Borntraeger , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Benjamin Herrenschmidt , Takashi Iwai , Chris Metcalf , Christoph Lameter , linux-api@vger.kernel.org, Joonsoo Kim Subject: [PATCH 1/5] mm/vmalloc: query dynamic DEBUG_PAGEALLOC setting Date: Thu, 4 Feb 2016 14:56:22 +0900 Message-Id: <1454565386-10489-2-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454565386-10489-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1454565386-10489-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We can disable debug_pagealloc processing even if the code is complied with CONFIG_DEBUG_PAGEALLOC. This patch changes the code to query whether it is enabled or not in runtime. Signed-off-by: Joonsoo Kim --- mm/vmalloc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index fb42a5b..e0e51bd 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -543,10 +543,10 @@ static void vmap_debug_free_range(unsigned long start, unsigned long end) * debugging doesn't do a broadcast TLB flush so it is a lot * faster). */ -#ifdef CONFIG_DEBUG_PAGEALLOC - vunmap_page_range(start, end); - flush_tlb_kernel_range(start, end); -#endif + if (debug_pagealloc_enabled()) { + vunmap_page_range(start, end); + flush_tlb_kernel_range(start, end); + } } /* -- 1.9.1