From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753285AbeCNEG2 (ORCPT ); Wed, 14 Mar 2018 00:06:28 -0400 Received: from mail-pg0-f67.google.com ([74.125.83.67]:34371 "EHLO mail-pg0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751296AbeCNEGU (ORCPT ); Wed, 14 Mar 2018 00:06:20 -0400 X-Google-Smtp-Source: AG47ELu5PS1PhnojDkvvMZs7gkk4nbkm2GdM9JEV2eBP0A5P5Ggp9tdhg1qaWZw43Dwewt9RgF4RNw== From: Deepa Dinamani To: arnd@arndb.de, tglx@linutronix.de, john.stultz@linaro.org Cc: linux-kernel@vger.kernel.org, y2038@lists.linaro.org Subject: [PATCH v5 05/10] arch: Introduce CONFIG_COMPAT_32BIT_TIME Date: Tue, 13 Mar 2018 21:03:28 -0700 Message-Id: <20180314040333.3291-6-deepa.kernel@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180314040333.3291-1-deepa.kernel@gmail.com> References: <20180314040333.3291-1-deepa.kernel@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Compat functions are now used to support 32 bit time_t in compat mode on 64 bit architectures and in native mode on 32 bit architectures. Introduce COMPAT_32BIT_TIME to conditionally compile these functions. Note that turning off 32 bit time_t support requires more changes on architecture side. For instance, architecure syscall tables need to be updated to drop support for 32 bit time_t syscalls. Signed-off-by: Deepa Dinamani --- arch/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index 16e6acfe8711..4377b0cec976 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -878,6 +878,13 @@ config 64BIT_TIME architectures, and 64-bit architectures as part of compat syscall handling. +config COMPAT_32BIT_TIME + def_bool (!64BIT && 64BIT_TIME) || COMPAT + help + This enables 32 bit time_t support in addition to 64 bit time_t support. + This is relevant on all 32-bit architectures, and 64-bit architectures + as part of compat syscall handling. + config ARCH_NO_COHERENT_DMA_MMAP bool -- 2.14.1