From: Michael S. Tsirkin Date: Sun, 27 Dec 2015 13:04:42 +0000 (+0200) Subject: s390: define __smp_xxx X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=82b44496abd91781ed4120c3b0c1a3d111c3e28e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git s390: define __smp_xxx This defines __smp_xxx barriers for s390, for use by virtualization. Some smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Note: smp_mb, smp_rmb and smp_wmb are defined as full barriers unconditionally on this architecture. Signed-off-by: Michael S. Tsirkin Acked-by: Arnd Bergmann Acked-by: Martin Schwidefsky Acked-by: Peter Zijlstra (Intel) --- diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index c358c31a7f07..fbd25b299c8b 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -26,18 +26,21 @@ #define wmb() barrier() #define dma_rmb() mb() #define dma_wmb() mb() -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() - -#define smp_store_release(p, v) \ +#define __smp_mb() mb() +#define __smp_rmb() rmb() +#define __smp_wmb() wmb() +#define smp_mb() __smp_mb() +#define smp_rmb() __smp_rmb() +#define smp_wmb() __smp_wmb() + +#define __smp_store_release(p, v) \ do { \ compiletime_assert_atomic_type(*p); \ barrier(); \ WRITE_ONCE(*p, v); \ } while (0) -#define smp_load_acquire(p) \ +#define __smp_load_acquire(p) \ ({ \ typeof(*p) ___p1 = READ_ONCE(*p); \ compiletime_assert_atomic_type(*p); \