From 11ab3f3d3c2474d3ed6912443de74c3972bd6f23 Mon Sep 17 00:00:00 2001 From: Chen Liqin Date: Wed, 18 Nov 2009 13:22:33 +0800 Subject: score: add flush_dcahce_page and PG_dcache_dirty define Signed-off-by: Cui Bixiong Signed-off-by: Chen Liqin modified: arch/score/include/asm/cacheflush.h modified: arch/score/mm/cache.c --- arch/score/mm/cache.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) (limited to 'arch/score/mm') diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c index dbac9d9dfdd..b25e9574360 100644 --- a/arch/score/mm/cache.c +++ b/arch/score/mm/cache.c @@ -29,6 +29,7 @@ #include #include #include +#include #include @@ -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); } } -- cgit v1.2.3 From 202b864ad5aa34989609a3073acbe7a04795b265 Mon Sep 17 00:00:00 2001 From: Chen Liqin Date: Wed, 18 Nov 2009 13:28:13 +0800 Subject: score: fixed pfn_valid define. Signed-off-by: Cui Bixiong Signed-off-by: Chen Liqin modified: arch/score/include/asm/page.h modified: arch/score/kernel/setup.c modified: arch/score/mm/init.c --- arch/score/include/asm/page.h | 2 +- arch/score/kernel/setup.c | 1 + arch/score/mm/init.c | 5 ----- 3 files changed, 2 insertions(+), 6 deletions(-) (limited to 'arch/score/mm') diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h index d92a5a2d36d..1e9ade8e77e 100644 --- a/arch/score/include/asm/page.h +++ b/arch/score/include/asm/page.h @@ -74,7 +74,7 @@ extern unsigned long max_pfn; #define page_to_bus(page) (page_to_phys(page)) #define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr))) -#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr) +#define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn)) #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c index 6a2503c75c4..6f898c05787 100644 --- a/arch/score/kernel/setup.c +++ b/arch/score/kernel/setup.c @@ -49,6 +49,7 @@ static void __init bootmem_init(void) min_low_pfn = PFN_UP(MEMORY_START); max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE); + max_mapnr = max_low_pfn - min_low_pfn; /* Initialize the boot-time allocator with low memory only. */ bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn, diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c index 4e3dcd0c471..8c15b2c85d5 100644 --- a/arch/score/mm/init.c +++ b/arch/score/mm/init.c @@ -83,7 +83,6 @@ void __init mem_init(void) unsigned long codesize, reservedpages, datasize, initsize; unsigned long tmp, ram = 0; - max_mapnr = max_low_pfn; high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT); totalram_pages += free_all_bootmem(); totalram_pages -= setup_zero_page(); /* Setup zeroed pages. */ @@ -101,10 +100,6 @@ void __init mem_init(void) datasize = (unsigned long) &_edata - (unsigned long) &_etext; initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin; - kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT); - kclist_add(&kcore_vmalloc, (void *) VMALLOC_START, - VMALLOC_END - VMALLOC_START); - printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, " "%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n", (unsigned long) nr_free_pages() << (PAGE_SHIFT-10), -- cgit v1.2.3 From 4b529401c5089cf33f7165607cbc2fde43357bfb Mon Sep 17 00:00:00 2001 From: Andreas Fenkart Date: Fri, 8 Jan 2010 14:42:31 -0800 Subject: mm: make totalhigh_pages unsigned long Makes it consistent with the extern declaration, used when CONFIG_HIGHMEM is set Removes redundant casts in printout messages Signed-off-by: Andreas Fenkart Acked-by: Russell King Cc: Ralf Baechle Cc: David Howells Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Chen Liqin Cc: Lennox Wu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/mm/init.c | 2 +- arch/mips/mm/init.c | 2 +- arch/mips/sgi-ip27/ip27-memory.c | 2 +- arch/mn10300/mm/init.c | 3 +-- arch/score/mm/init.c | 2 +- arch/x86/mm/init_32.c | 3 +-- include/linux/highmem.h | 2 +- 7 files changed, 7 insertions(+), 9 deletions(-) (limited to 'arch/score/mm') diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 52c40d15567..a04ffbbbe25 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -616,7 +616,7 @@ void __init mem_init(void) "%dK data, %dK init, %luK highmem)\n", nr_free_pages() << (PAGE_SHIFT-10), codesize >> 10, datasize >> 10, initsize >> 10, - (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))); + totalhigh_pages << (PAGE_SHIFT-10)); if (PAGE_SIZE >= 16384 && num_physpages <= 128) { extern int sysctl_overcommit_memory; diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index 9e8d00389ee..1651942f7fe 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -424,7 +424,7 @@ void __init mem_init(void) reservedpages << (PAGE_SHIFT-10), datasize >> 10, initsize >> 10, - (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))); + totalhigh_pages << (PAGE_SHIFT-10)); } #endif /* !CONFIG_NEED_MULTIPLE_NODES */ diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c index f61c164d1e6..bc1297109cc 100644 --- a/arch/mips/sgi-ip27/ip27-memory.c +++ b/arch/mips/sgi-ip27/ip27-memory.c @@ -505,5 +505,5 @@ void __init mem_init(void) (num_physpages - tmp) << (PAGE_SHIFT-10), datasize >> 10, initsize >> 10, - (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))); + totalhigh_pages << (PAGE_SHIFT-10)); } diff --git a/arch/mn10300/mm/init.c b/arch/mn10300/mm/init.c index ec1420562dc..dd27a9a3515 100644 --- a/arch/mn10300/mm/init.c +++ b/arch/mn10300/mm/init.c @@ -118,8 +118,7 @@ void __init mem_init(void) reservedpages << (PAGE_SHIFT - 10), datasize >> 10, initsize >> 10, - (unsigned long) (totalhigh_pages << (PAGE_SHIFT - 10)) - ); + totalhigh_pages << (PAGE_SHIFT - 10)); } /* diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c index 8c15b2c85d5..dfaf458d670 100644 --- a/arch/score/mm/init.c +++ b/arch/score/mm/init.c @@ -106,7 +106,7 @@ void __init mem_init(void) ram << (PAGE_SHIFT-10), codesize >> 10, reservedpages << (PAGE_SHIFT-10), datasize >> 10, initsize >> 10, - (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))); + totalhigh_pages << (PAGE_SHIFT-10)); } #endif /* !CONFIG_NEED_MULTIPLE_NODES */ diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index c973f8e2a6c..9a0c258a86b 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -892,8 +892,7 @@ void __init mem_init(void) reservedpages << (PAGE_SHIFT-10), datasize >> 10, initsize >> 10, - (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10)) - ); + totalhigh_pages << (PAGE_SHIFT-10)); printk(KERN_INFO "virtual kernel memory layout:\n" " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n" diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 211ff449726..ab2cc20e21a 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -46,7 +46,7 @@ void kmap_flush_unused(void); static inline unsigned int nr_free_highpages(void) { return 0; } -#define totalhigh_pages 0 +#define totalhigh_pages 0UL #ifndef ARCH_HAS_KMAP static inline void *kmap(struct page *page) -- cgit v1.2.3