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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/alpha/include/asm/cacheflush.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/alpha/include/asm/cacheflush.h')
-rw-r--r-- | ANDROID_3.4.5/arch/alpha/include/asm/cacheflush.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/ANDROID_3.4.5/arch/alpha/include/asm/cacheflush.h b/ANDROID_3.4.5/arch/alpha/include/asm/cacheflush.h deleted file mode 100644 index a9cb6aa4..00000000 --- a/ANDROID_3.4.5/arch/alpha/include/asm/cacheflush.h +++ /dev/null @@ -1,77 +0,0 @@ -#ifndef _ALPHA_CACHEFLUSH_H -#define _ALPHA_CACHEFLUSH_H - -#include <linux/mm.h> - -/* Caches aren't brain-dead on the Alpha. */ -#define flush_cache_all() do { } while (0) -#define flush_cache_mm(mm) do { } while (0) -#define flush_cache_dup_mm(mm) do { } while (0) -#define flush_cache_range(vma, start, end) do { } while (0) -#define flush_cache_page(vma, vmaddr, pfn) do { } while (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_unlock(mapping) do { } while (0) -#define flush_cache_vmap(start, end) do { } while (0) -#define flush_cache_vunmap(start, end) do { } while (0) - -/* Note that the following two definitions are _highly_ dependent - on the contexts in which they are used in the kernel. I personally - think it is criminal how loosely defined these macros are. */ - -/* We need to flush the kernel's icache after loading modules. The - only other use of this macro is in load_aout_interp which is not - used on Alpha. - - Note that this definition should *not* be used for userspace - icache flushing. While functional, it is _way_ overkill. The - icache is tagged with ASNs and it suffices to allocate a new ASN - for the process. */ -#ifndef CONFIG_SMP -#define flush_icache_range(start, end) imb() -#else -#define flush_icache_range(start, end) smp_imb() -extern void smp_imb(void); -#endif - -/* We need to flush the userspace icache after setting breakpoints in - ptrace. - - Instead of indiscriminately using imb, take advantage of the fact - that icache entries are tagged with the ASN and load a new mm context. */ -/* ??? Ought to use this in arch/alpha/kernel/signal.c too. */ - -#ifndef CONFIG_SMP -#include <linux/sched.h> - -extern void __load_new_mm_context(struct mm_struct *); -static inline void -flush_icache_user_range(struct vm_area_struct *vma, struct page *page, - unsigned long addr, int len) -{ - if (vma->vm_flags & VM_EXEC) { - struct mm_struct *mm = vma->vm_mm; - if (current->active_mm == mm) - __load_new_mm_context(mm); - else - mm->context[smp_processor_id()] = 0; - } -} -#else -extern void flush_icache_user_range(struct vm_area_struct *vma, - struct page *page, unsigned long addr, int len); -#endif - -/* This is used only in __do_fault and do_swap_page. */ -#define flush_icache_page(vma, page) \ - flush_icache_user_range((vma), (page), 0, 0) - -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ -do { memcpy(dst, src, len); \ - flush_icache_user_range(vma, page, vaddr, len); \ -} while (0) -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ - memcpy(dst, src, len) - -#endif /* _ALPHA_CACHEFLUSH_H */ |