cregit-Linux how code gets into the kernel

Release 4.14 arch/sh/include/asm/cacheflush.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_CACHEFLUSH_H

#define __ASM_SH_CACHEFLUSH_H

#ifdef __KERNEL__

#include <linux/mm.h>

/*
 * Cache flushing:
 *
 *  - flush_cache_all() flushes entire cache
 *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
 *  - flush_cache_dup mm(mm) handles cache flushing when forking
 *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
 *  - flush_cache_range(vma, start, end) flushes a range of pages
 *
 *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
 *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
 *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
 *  - flush_cache_sigtramp(vaddr) flushes the signal trampoline
 */
extern void (*local_flush_cache_all)(void *args);
extern void (*local_flush_cache_mm)(void *args);
extern void (*local_flush_cache_dup_mm)(void *args);
extern void (*local_flush_cache_page)(void *args);
extern void (*local_flush_cache_range)(void *args);
extern void (*local_flush_dcache_page)(void *args);
extern void (*local_flush_icache_range)(void *args);
extern void (*local_flush_icache_page)(void *args);
extern void (*local_flush_cache_sigtramp)(void *args);


static inline void cache_noop(void *args) { }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt10100.00%1100.00%
Total10100.00%1100.00%

extern void (*__flush_wback_region)(void *start, int size); extern void (*__flush_purge_region)(void *start, int size); extern void (*__flush_invalidate_region)(void *start, int size); extern void flush_cache_all(void); extern void flush_cache_mm(struct mm_struct *mm); extern void flush_cache_dup_mm(struct mm_struct *mm); extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *page); extern void flush_icache_range(unsigned long start, unsigned long end); extern void flush_icache_page(struct vm_area_struct *vma, struct page *page); extern void flush_cache_sigtramp(unsigned long address); struct flusher_data { struct vm_area_struct *vma; unsigned long addr1, addr2; }; #define ARCH_HAS_FLUSH_ANON_PAGE extern void __flush_anon_page(struct page *page, unsigned long);
static inline void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) { if (boot_cpu_data.dcache.n_aliases && PageAnon(page)) __flush_anon_page(page, vmaddr); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt41100.00%1100.00%
Total41100.00%1100.00%


static inline void flush_kernel_vmap_range(void *addr, int size) { __flush_wback_region(addr, size); }

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PersonTokensPropCommitsCommitProp
James Bottomley21100.00%1100.00%
Total21100.00%1100.00%


static inline void invalidate_kernel_vmap_range(void *addr, int size) { __flush_invalidate_region(addr, size); }

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PersonTokensPropCommitsCommitProp
James Bottomley21100.00%1100.00%
Total21100.00%1100.00%

#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
static inline void flush_kernel_dcache_page(struct page *page) { flush_dcache_page(page); }

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Carmelo Amoroso17100.00%1100.00%
Total17100.00%1100.00%

extern void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len); extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len); #define flush_cache_vmap(start, end) local_flush_cache_all(NULL) #define flush_cache_vunmap(start, end) local_flush_cache_all(NULL) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) void kmap_coherent_init(void); void *kmap_coherent(struct page *page, unsigned long addr); void kunmap_coherent(void *kvaddr); #define PG_dcache_clean PG_arch_1 void cpu_cache_init(void); #endif /* __KERNEL__ */ #endif /* __ASM_SH_CACHEFLUSH_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt49387.10%1473.68%
James Bottomley427.42%15.26%
Carmelo Amoroso203.53%15.26%
Andrew Morton61.06%15.26%
Ilya Loginov40.71%15.26%
Greg Kroah-Hartman10.18%15.26%
Total566100.00%19100.00%
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