diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/riscv_barrier.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/sbi/riscv_barrier.h b/include/sbi/riscv_barrier.h index 1fba8b82..3d4a038c 100644 --- a/include/sbi/riscv_barrier.h +++ b/include/sbi/riscv_barrier.h @@ -40,7 +40,11 @@ #define smp_wmb() RISCV_FENCE(w,w) /* CPU relax for busy loop */ -#define cpu_relax() asm volatile ("" : : : "memory") +#define cpu_relax() \ +do { \ + unsigned long __t; \ + __asm__ __volatile__ ("div %0, %0, zero" : "=r" (__t)); \ +} while (0) /* clang-format on */ |