From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753006AbdFUFVt (ORCPT ); Wed, 21 Jun 2017 01:21:49 -0400 Received: from mail-pf0-f173.google.com ([209.85.192.173]:35350 "EHLO mail-pf0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750876AbdFUFVr (ORCPT ); Wed, 21 Jun 2017 01:21:47 -0400 From: John Stultz To: lkml Cc: John Stultz , Thomas Gleixner , Ingo Molnar , Miroslav Lichvar , Richard Cochran , Prarit Bhargava , Marcelo Tosatti , Paul Mackerras , Anton Blanchard , Benjamin Herrenschmidt , Tony Luck , Michael Ellerman , Fenghua Yu Subject: [PATCH 2/4] time: Add warning about imminent deprecation of CONFIG_GENERIC_TIME_VSYSCALL_OLD Date: Tue, 20 Jun 2017 22:21:31 -0700 Message-Id: <1498022493-20292-3-git-send-email-john.stultz@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1498022493-20292-1-git-send-email-john.stultz@linaro.org> References: <1498022493-20292-1-git-send-email-john.stultz@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org CONFIG_GENERIC_TIME_VSYSCALL_OLD was introduced five years ago to allow a transition from the old vsyscall implementations to the new method (which simplified internal accounting and made timekeeping more precise). However, PPC and IA64 have yet to make the transition, despite in some cases me sending test patches to try to help it along. http://patches.linaro.org/patch/30501/ http://patches.linaro.org/patch/35412/ If its helpful, my last pass at the patches can be found here: https://git.linaro.org/people/john.stultz/linux.git dev/oldvsyscall-cleanup So I think its time to set a deadline and make it clear this is going away. So this patch adds warnings about this functionality being dropped. Likely to be in v4.15. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Miroslav Lichvar Cc: Richard Cochran Cc: Prarit Bhargava Cc: Marcelo Tosatti Cc: Paul Mackerras Cc: Anton Blanchard Cc: Benjamin Herrenschmidt Cc: Tony Luck Cc: Michael Ellerman Cc: Fenghua Yu Signed-off-by: John Stultz --- kernel/time/timekeeping.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 0454bfa..cedafa0 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -516,6 +516,7 @@ static void halt_fast_timekeeper(struct timekeeper *tk) } #ifdef CONFIG_GENERIC_TIME_VSYSCALL_OLD +#warning Please contact your maintainers, as GENERIC_TIME_VSYSCALL_OLD compatibity will disappear soon. static inline void update_vsyscall(struct timekeeper *tk) { -- 2.7.4