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authorDeepa Dinamani <deepa.kernel@gmail.com>2018-03-13 21:03:27 -0700
committerArnd Bergmann <arnd@arndb.de>2018-04-19 13:30:21 +0200
commitd4703ddafd1e05b8ec8f3fc8f4fbb4f88789a5ea (patch)
tree7fe586a108001ea3099a6d224c0a3d518bb84e9f /arch/Kconfig
parentcompat: Enable compat_get/put_timespec64 always (diff)
downloadlinux-dev-d4703ddafd1e05b8ec8f3fc8f4fbb4f88789a5ea.tar.xz
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time: Introduce CONFIG_64BIT_TIME in architectures
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. After this is done for all architectures, the CONFIG_64BIT_TIME symbol will be deleted. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/Kconfig')
-rw-r--r--arch/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 8e0d665c8d53..16e6acfe8711 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -870,6 +870,14 @@ config OLD_SIGACTION
config COMPAT_OLD_SIGACTION
bool
+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