From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932493AbdESVBf (ORCPT ); Fri, 19 May 2017 17:01:35 -0400 Received: from mail-pf0-f174.google.com ([209.85.192.174]:33639 "EHLO mail-pf0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757178AbdESVBc (ORCPT ); Fri, 19 May 2017 17:01:32 -0400 From: Matthias Kaehlcke To: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Matthias Kaehlcke Subject: [PATCH 3/3] mm/slub: Put tid_to_cpu() and tid_to_event() inside #ifdef block Date: Fri, 19 May 2017 14:00:36 -0700 Message-Id: <20170519210036.146880-4-mka@chromium.org> X-Mailer: git-send-email 2.13.0.303.g4ebf302169-goog In-Reply-To: <20170519210036.146880-1-mka@chromium.org> References: <20170519210036.146880-1-mka@chromium.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The functions are only used when certain config options are set. Putting them inside #ifdef fixes the following warnings when building with clang: mm/slub.c:1759:28: error: unused function 'tid_to_cpu' [-Werror,-Wunused-function] ^ mm/slub.c:1764:29: error: unused function 'tid_to_event' [-Werror,-Wunused-function] Signed-off-by: Matthias Kaehlcke --- mm/slub.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/slub.c b/mm/slub.c index 23a8eb83efff..6df95738420d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1945,15 +1945,19 @@ static inline unsigned long next_tid(unsigned long tid) return tid + TID_STEP; } +#ifdef SLUB_DEBUG_CMPXCHG +#ifdef CONFIG_PREEMPT static inline unsigned int tid_to_cpu(unsigned long tid) { return tid % TID_STEP; } +#endif static inline unsigned long tid_to_event(unsigned long tid) { return tid / TID_STEP; } +#endif static inline unsigned int init_tid(int cpu) { -- 2.13.0.303.g4ebf302169-goog