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arm64: barriers: make use of barrier options with explicit barriers

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When calling our low-level barrier macros directly, we can often suffice
with more relaxed behaviour than the default "all accesses, full system"
option.

This patch updates the users of dsb() to specify the option which they
actually require.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon
2014-05-02 16:24:10 +01:00
committed by Catalin Marinas
parent fa48e6f780
commit 98f7685ee6
6 changed files with 15 additions and 15 deletions
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4
arch/arm64/include/asm/cacheflush.h
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@@ -123,7 +123,7 @@ extern void flush_dcache_page(struct page *);
static inline void __flush_icache_all(void)
{
asm("ic ialluis");
dsb();
dsb(ish);
}
#define flush_dcache_mmap_lock(mapping) \
@@ -150,7 +150,7 @@ static inline void flush_cache_vmap(unsigned long start, unsigned long end)
* set_pte_at() called from vmap_pte_range() does not
* have a DSB after cleaning the cache line.
*/
dsb();
dsb(ish);
}
static inline void flush_cache_vunmap(unsigned long start, unsigned long end)