diff options
Diffstat (limited to 'arch/arm64/include/asm/processor.h')
| -rw-r--r-- | arch/arm64/include/asm/processor.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index d08559528927..4be934fde409 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -29,8 +29,10 @@ #include <linux/string.h> +#include <asm/alternative.h> #include <asm/fpsimd.h> #include <asm/hw_breakpoint.h> +#include <asm/lse.h> #include <asm/pgtable-hwdef.h> #include <asm/ptrace.h> #include <asm/types.h> @@ -177,9 +179,11 @@ static inline void prefetchw(const void *ptr) } #define ARCH_HAS_SPINLOCK_PREFETCH -static inline void spin_lock_prefetch(const void *x) +static inline void spin_lock_prefetch(const void *ptr) { - prefetchw(x); + asm volatile(ARM64_LSE_ATOMIC_INSN( + "prfm pstl1strm, %a0", + "nop") : : "p" (ptr)); } #define HAVE_ARCH_PICK_MMAP_LAYOUT @@ -187,5 +191,6 @@ static inline void spin_lock_prefetch(const void *x) #endif int cpu_enable_pan(void *__unused); +int cpu_enable_uao(void *__unused); #endif /* __ASM_PROCESSOR_H */ |