From 93ea02bb84354370e51de803a9405f171f3edf88 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 6 Nov 2013 14:57:36 +0100 Subject: arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h We're going to be adding a few new barrier primitives, and in order to avoid endless duplication make more agressive use of asm-generic/barrier.h. Change the asm-generic/barrier.h such that it allows partial barrier definitions and fills out the rest with defaults. There are a few architectures (m32r, m68k) that could probably do away with their barrier.h file entirely but are kept for now due to their unconventional nop() implementation. Suggested-by: Geert Uytterhoeven Reviewed-by: "Paul E. McKenney" Reviewed-by: Mathieu Desnoyers Signed-off-by: Peter Zijlstra Cc: Michael Ellerman Cc: Michael Neuling Cc: Russell King Cc: Heiko Carstens Cc: Linus Torvalds Cc: Martin Schwidefsky Cc: Victor Kaplansky Cc: Tony Luck Cc: Oleg Nesterov Cc: Benjamin Herrenschmidt Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/20131213150640.846368594@infradead.org Signed-off-by: Ingo Molnar --- arch/microblaze/include/asm/Kbuild | 1 + arch/microblaze/include/asm/barrier.h | 27 --------------------------- 2 files changed, 1 insertion(+), 27 deletions(-) delete mode 100644 arch/microblaze/include/asm/barrier.h (limited to 'arch/microblaze') diff --git a/arch/microblaze/include/asm/Kbuild b/arch/microblaze/include/asm/Kbuild index ce0bbf8f564..f77fb6630b1 100644 --- a/arch/microblaze/include/asm/Kbuild +++ b/arch/microblaze/include/asm/Kbuild @@ -4,3 +4,4 @@ generic-y += exec.h generic-y += trace_clock.h generic-y += syscalls.h generic-y += preempt.h +generic-y += barrier.h diff --git a/arch/microblaze/include/asm/barrier.h b/arch/microblaze/include/asm/barrier.h deleted file mode 100644 index df5be3e8704..00000000000 --- a/arch/microblaze/include/asm/barrier.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright (C) 2006 Atmark Techno, Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#ifndef _ASM_MICROBLAZE_BARRIER_H -#define _ASM_MICROBLAZE_BARRIER_H - -#define nop() asm volatile ("nop") - -#define smp_read_barrier_depends() do {} while (0) -#define read_barrier_depends() do {} while (0) - -#define mb() barrier() -#define rmb() mb() -#define wmb() mb() -#define set_mb(var, value) do { var = value; mb(); } while (0) -#define set_wmb(var, value) do { var = value; wmb(); } while (0) - -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() - -#endif /* _ASM_MICROBLAZE_BARRIER_H */ -- cgit v1.2.3-70-g09d2