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sh: Make cache flushers SMP-aware.

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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>
This commit is contained in:
Paul Mundt
2009-08-21 17:23:14 +09:00
parent f9bd71f255
commit f26b2a562b
6 changed files with 213 additions and 160 deletions
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41
arch/sh/include/asm/cacheflush.h
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@@ -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);