From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753639AbdK0Tb7 (ORCPT ); Mon, 27 Nov 2017 14:31:59 -0500 Received: from mail-qk0-f195.google.com ([209.85.220.195]:45286 "EHLO mail-qk0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752888AbdK0Tbz (ORCPT ); Mon, 27 Nov 2017 14:31:55 -0500 X-Google-Smtp-Source: AGs4zMYF8UlyePA1OMt7Ygwfk/lpdJF4gyznv0m3SRpWwEZdd4OeUfUgxBpz9H9qXJ5EldBeTDoslQ== From: Deepa Dinamani To: tglx@linutronix.de, john.stultz@linaro.org Cc: linux-kernel@vger.kernel.org, arnd@arndb.de, y2038@lists.linaro.org Subject: [PATCH v2 05/10] arch: Introduce CONFIG_COMPAT_32BIT_TIME Date: Mon, 27 Nov 2017 11:30:32 -0800 Message-Id: <20171127193037.8711-6-deepa.kernel@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20171127193037.8711-1-deepa.kernel@gmail.com> References: <20171127193037.8711-1-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 11810c29c1fa..e75c5239c885 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -884,6 +884,13 @@ 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