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author | Chen Liqin <liqin.chen@sunplusct.com> | 2009-11-18 13:22:33 +0800 |
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committer | Chen Liqin <liqin.chen@sunplusct.com> | 2009-12-17 18:28:31 +0800 |
commit | 11ab3f3d3c2474d3ed6912443de74c3972bd6f23 (patch) | |
tree | 51b121a80494989c220b10dbef1f2c463882899f /arch/score/mm | |
parent | 718deb6b61e34c200c1f2b706176d9aac334cb2d (diff) | |
download | blackbird-obmc-linux-11ab3f3d3c2474d3ed6912443de74c3972bd6f23.tar.gz blackbird-obmc-linux-11ab3f3d3c2474d3ed6912443de74c3972bd6f23.zip |
score: add flush_dcahce_page and PG_dcache_dirty define
Signed-off-by: Cui Bixiong <bixiong@sunnorth.com.cn>
Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com>
modified: arch/score/include/asm/cacheflush.h
modified: arch/score/mm/cache.c
Diffstat (limited to 'arch/score/mm')
-rw-r--r-- | arch/score/mm/cache.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c index dbac9d9dfddd..b25e95743600 100644 --- a/arch/score/mm/cache.c +++ b/arch/score/mm/cache.c @@ -29,6 +29,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/sched.h> +#include <linux/fs.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. */ void __update_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte) @@ -63,11 +85,11 @@ void __update_cache(struct vm_area_struct *vma, unsigned long address, if (unlikely(!pfn_valid(pfn))) return; 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); if (exec) flush_data_cache_page(addr); - clear_bit(PG_arch_1, &page->flags); + clear_bit(PG_dcache_dirty, &(page)->flags); } } |