This source file includes following definitions.
- sync_icache_aliases
- flush_ptrace_access
- copy_to_user_page
- __sync_icache_dcache
- flush_dcache_page
- arch_wb_cache_pmem
- arch_invalidate_pmem
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8
9 #include <linux/export.h>
10 #include <linux/mm.h>
11 #include <linux/pagemap.h>
12
13 #include <asm/cacheflush.h>
14 #include <asm/cache.h>
15 #include <asm/tlbflush.h>
16
17 void sync_icache_aliases(void *kaddr, unsigned long len)
18 {
19 unsigned long addr = (unsigned long)kaddr;
20
21 if (icache_is_aliasing()) {
22 __clean_dcache_area_pou(kaddr, len);
23 __flush_icache_all();
24 } else {
25
26
27
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29 __flush_icache_range(addr, addr + len);
30 }
31 }
32
33 static void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
34 unsigned long uaddr, void *kaddr,
35 unsigned long len)
36 {
37 if (vma->vm_flags & VM_EXEC)
38 sync_icache_aliases(kaddr, len);
39 }
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44
45
46 void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
47 unsigned long uaddr, void *dst, const void *src,
48 unsigned long len)
49 {
50 memcpy(dst, src, len);
51 flush_ptrace_access(vma, page, uaddr, dst, len);
52 }
53
54 void __sync_icache_dcache(pte_t pte)
55 {
56 struct page *page = pte_page(pte);
57
58 if (!test_and_set_bit(PG_dcache_clean, &page->flags))
59 sync_icache_aliases(page_address(page), page_size(page));
60 }
61 EXPORT_SYMBOL_GPL(__sync_icache_dcache);
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67
68 void flush_dcache_page(struct page *page)
69 {
70 if (test_bit(PG_dcache_clean, &page->flags))
71 clear_bit(PG_dcache_clean, &page->flags);
72 }
73 EXPORT_SYMBOL(flush_dcache_page);
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76
77
78 EXPORT_SYMBOL(__flush_icache_range);
79
80 #ifdef CONFIG_ARCH_HAS_PMEM_API
81 void arch_wb_cache_pmem(void *addr, size_t size)
82 {
83
84 dmb(osh);
85 __clean_dcache_area_pop(addr, size);
86 }
87 EXPORT_SYMBOL_GPL(arch_wb_cache_pmem);
88
89 void arch_invalidate_pmem(void *addr, size_t size)
90 {
91 __inval_dcache_area(addr, size);
92 }
93 EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
94 #endif