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Message-Id: <20171127193037.8711-5-deepa.kernel@gmail.com> Date: Mon, 27 Nov 2017 11:30:31 -0800 From: Deepa Dinamani <deepa.kernel@...il.com> To: tglx@...utronix.de, john.stultz@...aro.org Cc: linux-kernel@...r.kernel.org, arnd@...db.de, y2038@...ts.linaro.org Subject: [PATCH v2 04/10] arch: introduce CONFIG_64BIT_TIME There are a total of 53 system calls (aside from ioctl) that pass a time_t or derived data structure as an argument, and in order to extend time_t to 64-bit, we have to replace them with new system calls and keep providing backwards compatibility. To avoid adding completely new and untested code for this purpose, we introduce a new CONFIG_64BIT_TIME symbol. Every architecture that supports new 64 bit time_t syscalls enables this config via ARCH_HAS_64BIT_TIME. After this is done for all architectures, the CONFIG_64BIT_TIME symbol will be deleted. Signed-off-by: Arnd Bergmann <arnd@...db.de> Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com> --- arch/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index 4f03534bfa6b..11810c29c1fa 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -873,6 +873,17 @@ config OLD_SIGACTION config COMPAT_OLD_SIGACTION bool +config ARCH_HAS_64BIT_TIME + def_bool n + +config 64BIT_TIME + def_bool ARCH_HAS_64BIT_TIME + help + This should be selected by all architectures that need to support + new system calls with a 64-bit time_t. 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
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