diff options
| author | Andrew Turner <andrew@FreeBSD.org> | 2024-07-30 09:26:21 +0000 |
|---|---|---|
| committer | Andrew Turner <andrew@FreeBSD.org> | 2024-08-19 10:53:12 +0000 |
| commit | 7a345763f96d86eee9ab578e64311bf452e58900 (patch) | |
| tree | ce7c4d629e93ede90508a446bc1b99324ce183fc /sys/arm64/include | |
| parent | 87940d2b331c2575f96fbff2600d8da35191157b (diff) | |
| download | src-7a345763f96d86eee9ab578e64311bf452e58900.tar.gz src-7a345763f96d86eee9ab578e64311bf452e58900.zip | |
arm64: Expand the use of Armv8.1-A atomics
When targeting Armv8.1 we can assume FEAT_LSE is available and can use
the atomic instructions this provides without needing to check for
support first.
Reviewed by: imp, markj, emaste
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D46159
Diffstat (limited to 'sys/arm64/include')
| -rw-r--r-- | sys/arm64/include/atomic.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/arm64/include/atomic.h b/sys/arm64/include/atomic.h index 76ca951678d4..c7aaa76d9de9 100644 --- a/sys/arm64/include/atomic.h +++ b/sys/arm64/include/atomic.h @@ -65,8 +65,9 @@ extern _Bool lse_supported; #include <sys/atomic_common.h> -#ifdef _KERNEL - +#if defined(__ARM_FEATURE_ATOMICS) +#define _ATOMIC_LSE_SUPPORTED 1 +#elif defined(_KERNEL) #ifdef LSE_ATOMICS #define _ATOMIC_LSE_SUPPORTED 1 #else |