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authorDeepa Dinamani <deepa.kernel@gmail.com>2018-03-13 21:03:28 -0700
committerArnd Bergmann <arnd@arndb.de>2018-04-19 13:30:40 +0200
commit17435e5f8cf3ba8b3df1aa662f9921f0ccdd8a28 (patch)
treea27bfc628671de82c326623a9a8c0257a6e8e487 /arch
parenttime: Introduce CONFIG_64BIT_TIME in architectures (diff)
downloadlinux-dev-17435e5f8cf3ba8b3df1aa662f9921f0ccdd8a28.tar.xz
linux-dev-17435e5f8cf3ba8b3df1aa662f9921f0ccdd8a28.zip
time: Introduce CONFIG_COMPAT_32BIT_TIME
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 <deepa.kernel@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to '')
-rw-r--r--arch/Kconfig7
1 files changed, 7 insertions, 0 deletions
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