sh: Make cache flushers SMP-aware.
This does a bit of rework for making the cache flushers SMP-aware. The
function pointer-based flushers are renamed to local variants with the
exported interface being commonly implemented and wrapping as necessary.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
index 32299b7..11e4166 100644
--- a/arch/sh/include/asm/cacheflush.h
+++ b/arch/sh/include/asm/cacheflush.h
@@ -19,23 +19,40 @@
* - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
* - flush_cache_sigtramp(vaddr) flushes the signal trampoline
*/
-extern void (*flush_cache_all)(void);
-extern void (*flush_cache_mm)(struct mm_struct *mm);
-extern void (*flush_cache_dup_mm)(struct mm_struct *mm);
-extern void (*flush_cache_page)(struct vm_area_struct *vma,
- unsigned long addr, unsigned long pfn);
-extern void (*flush_cache_range)(struct vm_area_struct *vma,
- unsigned long start, unsigned long end);
-extern void (*flush_dcache_page)(struct page *page);
-extern void (*flush_icache_range)(unsigned long start, unsigned long end);
-extern void (*flush_icache_page)(struct vm_area_struct *vma,
- struct page *page);
-extern void (*flush_cache_sigtramp)(unsigned long address);
+extern void (*local_flush_cache_all)(void *args);
+extern void (*local_flush_cache_mm)(void *args);
+extern void (*local_flush_cache_dup_mm)(void *args);
+extern void (*local_flush_cache_page)(void *args);
+extern void (*local_flush_cache_range)(void *args);
+extern void (*local_flush_dcache_page)(void *args);
+extern void (*local_flush_icache_range)(void *args);
+extern void (*local_flush_icache_page)(void *args);
+extern void (*local_flush_cache_sigtramp)(void *args);
+
+static inline void cache_noop(void *args) { }
extern void (*__flush_wback_region)(void *start, int size);
extern void (*__flush_purge_region)(void *start, int size);
extern void (*__flush_invalidate_region)(void *start, int size);
+extern void flush_cache_all(void);
+extern void flush_cache_mm(struct mm_struct *mm);
+extern void flush_cache_dup_mm(struct mm_struct *mm);
+extern void flush_cache_page(struct vm_area_struct *vma,
+ unsigned long addr, unsigned long pfn);
+extern void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+extern void flush_dcache_page(struct page *page);
+extern void flush_icache_range(unsigned long start, unsigned long end);
+extern void flush_icache_page(struct vm_area_struct *vma,
+ struct page *page);
+extern void flush_cache_sigtramp(unsigned long address);
+
+struct flusher_data {
+ struct vm_area_struct *vma;
+ unsigned long addr1, addr2;
+};
+
#define ARCH_HAS_FLUSH_ANON_PAGE
extern void __flush_anon_page(struct page *page, unsigned long);