diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-03-16 13:14:38 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-05-29 23:47:23 (GMT) |
| commit | 1f1d5b745a4617a2cb2ffd8f4a9bc3be664cfc98 (patch) | |
| tree | 5b4525693a2f162fb39a2f1f245b16ea2c9bb33d | |
| parent | bc4f94d85cad6035d02d2bed1b27f9bea7e7b6e6 (diff) | |
| download | linux-1f1d5b745a4617a2cb2ffd8f4a9bc3be664cfc98.tar.xz | |
ARM: outer cache: add WARN_ON() to outer_disable()
Add WARN_ON() conditions to outer_disable() to ensure that its
requirements aren't violated.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/outercache.h | 6 | ||||
| -rw-r--r-- | arch/arm/mm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mm/l2c-common.c | 20 |
3 files changed, 22 insertions, 5 deletions
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h index 2615b3d..e96f194 100644 --- a/arch/arm/include/asm/outercache.h +++ b/arch/arm/include/asm/outercache.h @@ -96,11 +96,7 @@ static inline void outer_flush_all(void) * cache is pushed out to lower levels of system memory. The note and * conditions above concerning outer_flush_all() applies here. */ -static inline void outer_disable(void) -{ - if (outer_cache.disable) - outer_cache.disable(); -} +extern void outer_disable(void); /** * outer_resume - restore the cache configuration and re-enable outer cache diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 7f39ce2..de5a6a2 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_CPU_V7M) += proc-v7m.o AFLAGS_proc-v6.o :=-Wa,-march=armv6 AFLAGS_proc-v7.o :=-Wa,-march=armv7-a +obj-$(CONFIG_OUTER_CACHE) += l2c-common.o obj-$(CONFIG_CACHE_FEROCEON_L2) += cache-feroceon-l2.o obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o obj-$(CONFIG_CACHE_XSC3L2) += cache-xsc3l2.o diff --git a/arch/arm/mm/l2c-common.c b/arch/arm/mm/l2c-common.c new file mode 100644 index 0000000..10a3cf2 --- /dev/null +++ b/arch/arm/mm/l2c-common.c @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2010 ARM Ltd. + * Written by Catalin Marinas <catalin.marinas@arm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/bug.h> +#include <linux/smp.h> +#include <asm/outercache.h> + +void outer_disable(void) +{ + WARN_ON(!irqs_disabled()); + WARN_ON(num_online_cpus() > 1); + + if (outer_cache.disable) + outer_cache.disable(); +} |