diff options
| author | Petri Savolainen <petri.savolainen@nokia.com> | 2023-06-28 10:48:24 +0300 |
|---|---|---|
| committer | Petri Savolainen <petri.savolainen@nokia.com> | 2023-07-12 11:02:07 +0300 |
| commit | f42d23801f34dc0ca0aa0463bb92bf4fdc310d8e (patch) | |
| tree | 9f85b9da8bd74a4b19b09670a2c326f8938227b0 /platform/linux-generic/arch/x86 | |
| parent | 6cf41639a8400b32999626b029e522a0ddcde16f (diff) | |
linux-gen: sync: implement new memory barriers
Implement the new load and store synchronization barriers with
x86 and aarch64 instructions. The default implementation falls
back to the strongest GCC built-in (__sync_synchronize()), which
would be the strong enough on x86 (mfence), but too weak on
aarch64 (dmb).
Signed-off-by: Petri Savolainen <petri.savolainen@nokia.com>
Reviewed-by: Matias Elo <matias.elo@nokia.com>
Reviewed-by: Jere Leppänen <jere.leppanen@nokia.com>
Diffstat (limited to 'platform/linux-generic/arch/x86')
| -rw-r--r-- | platform/linux-generic/arch/x86/odp/api/abi/sync_inlines.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/platform/linux-generic/arch/x86/odp/api/abi/sync_inlines.h b/platform/linux-generic/arch/x86/odp/api/abi/sync_inlines.h new file mode 100644 index 000000000..bebe6b571 --- /dev/null +++ b/platform/linux-generic/arch/x86/odp/api/abi/sync_inlines.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright (c) 2023 Nokia + */ + +#ifndef ODP_ARCH_SYNC_INLINES_H_ +#define ODP_ARCH_SYNC_INLINES_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +static inline void _odp_mb_sync(void) +{ + __asm__ volatile("mfence" ::: "memory"); +} + +static inline void _odp_mb_sync_load(void) +{ + __asm__ volatile("lfence" ::: "memory"); +} + +static inline void _odp_mb_sync_store(void) +{ + __asm__ volatile("sfence" ::: "memory"); +} + +#ifdef __cplusplus +} +#endif + +#endif |