On Fri, Feb 2, 2018 at 5:31 PM, Masahiro Yamada yamada.masahiro@socionext.com wrote:
2018-02-03 0:40 GMT+09:00 Arnd Bergmann arnd@arndb.de:
include/linux/kconfig.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h index fec5076eda91..cc8fa109cfa3 100644 --- a/include/linux/kconfig.h +++ b/include/linux/kconfig.h @@ -4,6 +4,12 @@
#include <generated/autoconf.h>
+#ifdef CONFIG_CPU_BIG_ENDIAN +#define __BIG_ENDIAN 4321 +#else +#define __LITTLE_ENDIAN 1234 +#endif
#define __ARG_PLACEHOLDER_1 0, #define __take_second_arg(__ignored, val, ...) val
-- 2.9.0
If all architectures define CONFIG_CPU_BIG_ENDIAN or CONFIG_CPU_LITTLE_ENDIAN, is it possible to use this for endian test?
i.e.
Is it possible to replace like this? #ifdef __BIG_ENDIAN -> #ifdef CONFIG_CPU_BIG_ENDIAN
#ifdef __LITTLE_ENDIAN -> #ifdef CONFIG_CPU_LITTLE_ENDIAN
I believe we don't always define CONFIG_CPU_LITTLE_ENDIAN, but it would work in principle. The main issue here is changing so many files:
$ git grep -wl '__(BIG|LITTLE)_ENDIAN' | wc -l 418
$ git grep -wl 'CONFIG_CPU_(BIG|LITTLE)_ENDIAN' | wc -l 145
Arnd