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Diffstat (limited to 'arch/sh/mm/cache.c')
-rw-r--r--arch/sh/mm/cache.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index a2dc7f9ecc51..e9415d3ea94a 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -27,8 +27,11 @@ void (*local_flush_icache_page)(void *args) = cache_noop;
void (*local_flush_cache_sigtramp)(void *args) = cache_noop;
void (*__flush_wback_region)(void *start, int size);
+EXPORT_SYMBOL(__flush_wback_region);
void (*__flush_purge_region)(void *start, int size);
+EXPORT_SYMBOL(__flush_purge_region);
void (*__flush_invalidate_region)(void *start, int size);
+EXPORT_SYMBOL(__flush_invalidate_region);
static inline void noop__flush_region(void *start, int size)
{
@@ -161,14 +164,21 @@ void flush_cache_all(void)
{
cacheop_on_each_cpu(local_flush_cache_all, NULL, 1);
}
+EXPORT_SYMBOL(flush_cache_all);
void flush_cache_mm(struct mm_struct *mm)
{
+ if (boot_cpu_data.dcache.n_aliases == 0)
+ return;
+
cacheop_on_each_cpu(local_flush_cache_mm, mm, 1);
}
void flush_cache_dup_mm(struct mm_struct *mm)
{
+ if (boot_cpu_data.dcache.n_aliases == 0)
+ return;
+
cacheop_on_each_cpu(local_flush_cache_dup_mm, mm, 1);
}
@@ -195,11 +205,13 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
cacheop_on_each_cpu(local_flush_cache_range, (void *)&data, 1);
}
+EXPORT_SYMBOL(flush_cache_range);
void flush_dcache_page(struct page *page)
{
cacheop_on_each_cpu(local_flush_dcache_page, page, 1);
}
+EXPORT_SYMBOL(flush_dcache_page);
void flush_icache_range(unsigned long start, unsigned long end)
{
@@ -265,7 +277,11 @@ static void __init emit_cache_params(void)
void __init cpu_cache_init(void)
{
- unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE);
+ unsigned int cache_disabled = 0;
+
+#ifdef CCR
+ cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE);
+#endif
compute_alias(&boot_cpu_data.icache);
compute_alias(&boot_cpu_data.dcache);
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