diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2023-05-31 15:08:35 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-06-05 09:36:35 +0200 |
| commit | 224d80c584d3016cb8d83d1c33914fdd3508aa8c (patch) | |
| tree | 09619ad80961c82b1cd752e1c3e56a1c9ffca100 /include/uapi/linux/types.h | |
| parent | f413e724818c6482146218b3bcaf3d75b1317fc4 (diff) | |
types: Introduce [us]128
Introduce [us]128 (when available). Unlike [us]64, ensure they are
always naturally aligned.
This also enables 128bit wide atomics (which require natural
alignment) such as cmpxchg128().
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20230531132323.385005581@infradead.org
Diffstat (limited to 'include/uapi/linux/types.h')
| -rw-r--r-- | include/uapi/linux/types.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/types.h b/include/uapi/linux/types.h index 308433be33c2..6375a0684052 100644 --- a/include/uapi/linux/types.h +++ b/include/uapi/linux/types.h @@ -13,6 +13,10 @@ #include <linux/posix_types.h> +#ifdef __SIZEOF_INT128__ +typedef __signed__ __int128 __s128 __attribute__((aligned(16))); +typedef unsigned __int128 __u128 __attribute__((aligned(16))); +#endif /* * Below are truly Linux-specific types that should never collide with |