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Commit 11ab3f3d authored by Chen Liqin's avatar Chen Liqin
Browse files

score: add flush_dcahce_page and PG_dcache_dirty define 



Signed-off-by: default avatarCui Bixiong <bixiong@sunnorth.com.cn>
Signed-off-by: default avatarChen Liqin <liqin.chen@sunplusct.com>

	modified:   arch/score/include/asm/cacheflush.h
	modified:   arch/score/mm/cache.c
parent 718deb6b

arch/score/include/asm/cacheflush.h

+3 −1
Original line number Original line Diff line number Diff line
@@ -14,10 +14,12 @@ extern void flush_cache_sigtramp(unsigned long addr); 
extern void flush_icache_all(void);

extern void flush_icache_all(void);

extern void flush_icache_range(unsigned long start, unsigned long end);

extern void flush_icache_range(unsigned long start, unsigned long end);

extern void flush_dcache_range(unsigned long start, unsigned long end);

extern void flush_dcache_range(unsigned long start, unsigned long end);

extern void flush_dcache_page(struct page *page);



#define PG_dcache_dirty         PG_arch_1





#define flush_cache_dup_mm(mm)			do {} while (0)

#define flush_cache_dup_mm(mm)			do {} while (0)

#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0

#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0

#define flush_dcache_page(page)			do {} while (0)

#define flush_dcache_mmap_lock(mapping)		do {} while (0)

#define flush_dcache_mmap_lock(mapping)		do {} while (0)

#define flush_dcache_mmap_unlock(mapping)	do {} while (0)

#define flush_dcache_mmap_unlock(mapping)	do {} while (0)

#define flush_cache_vmap(start, end)		do {} while (0)

#define flush_cache_vmap(start, end)		do {} while (0)

arch/score/mm/cache.c

+24 −2
Original line number Original line Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/mm.h>

#include <linux/mm.h>

#include <linux/module.h>

#include <linux/module.h>

#include <linux/sched.h>

#include <linux/sched.h>

#include <linux/fs.h>





#include <asm/mmu_context.h>

#include <asm/mmu_context.h>
@@ -51,6 +52,27 @@ static void flush_data_cache_page(unsigned long addr) 
	}

	}

}

}





void flush_dcache_page(struct page *page)

{

	struct address_space *mapping = page_mapping(page);

	unsigned long addr;



	if (PageHighMem(page))

		return;

	if (mapping && !mapping_mapped(mapping)) {

		set_bit(PG_dcache_dirty, &(page)->flags);

		return;

	}



	/*

	 * We could delay the flush for the !page_mapping case too.  But that

	 * case is for exec env/arg pages and those are %99 certainly going to

	 * get faulted into the tlb (and thus flushed) anyways.

	 */

	addr = (unsigned long) page_address(page);

	flush_data_cache_page(addr);

}



/* called by update_mmu_cache. */

/* called by update_mmu_cache. */

void __update_cache(struct vm_area_struct *vma, unsigned long address,

void __update_cache(struct vm_area_struct *vma, unsigned long address,

		pte_t pte)

		pte_t pte)
@@ -63,11 +85,11 @@ void __update_cache(struct vm_area_struct *vma, unsigned long address, 
	if (unlikely(!pfn_valid(pfn)))

	if (unlikely(!pfn_valid(pfn)))

		return;

		return;

	page = pfn_to_page(pfn);

	page = pfn_to_page(pfn);

	if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {

	if (page_mapping(page) && test_bit(PG_dcache_dirty, &(page)->flags)) {

		addr = (unsigned long) page_address(page);

		addr = (unsigned long) page_address(page);

		if (exec)

		if (exec)

			flush_data_cache_page(addr);

			flush_data_cache_page(addr);

		clear_bit(PG_arch_1, &page->flags);

		clear_bit(PG_dcache_dirty, &(page)->flags);

	}

	}

}

}