mirror of
https://github.com/torvalds/linux.git
synced 2026-09-25 21:21:09 -04:00
Alexander Potapenko
2b420aaf80
Notify memory tools about usercopy events in copy_to_user_page() and copy_from_user_page(). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Alexander Potapenko <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Viro <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: David Rientjes <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Eric Biggers <[email protected]> Cc: Eric Biggers <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Herbert Xu <[email protected]> Cc: Ilya Leoshkevich <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Kees Cook <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Michael S. Tsirkin <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Petr Mladek <[email protected]> Cc: Stephen Rothwell <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vegard Nossum <[email protected]> Cc: Vlastimil Babka <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_GENERIC_CACHEFLUSH_H
|
|
#define _ASM_GENERIC_CACHEFLUSH_H
|
|
|
|
#include <linux/instrumented.h>
|
|
|
|
struct mm_struct;
|
|
struct vm_area_struct;
|
|
struct page;
|
|
struct address_space;
|
|
|
|
/*
|
|
* The cache doesn't need to be flushed when TLB entries change when
|
|
* the cache is mapped to physical memory, not virtual memory
|
|
*/
|
|
#ifndef flush_cache_all
|
|
static inline void flush_cache_all(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_mm
|
|
static inline void flush_cache_mm(struct mm_struct *mm)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_dup_mm
|
|
static inline void flush_cache_dup_mm(struct mm_struct *mm)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_range
|
|
static inline void flush_cache_range(struct vm_area_struct *vma,
|
|
unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_page
|
|
static inline void flush_cache_page(struct vm_area_struct *vma,
|
|
unsigned long vmaddr,
|
|
unsigned long pfn)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
|
|
static inline void flush_dcache_page(struct page *page)
|
|
{
|
|
}
|
|
|
|
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
|
|
#endif
|
|
|
|
#ifndef flush_dcache_mmap_lock
|
|
static inline void flush_dcache_mmap_lock(struct address_space *mapping)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_dcache_mmap_unlock
|
|
static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_icache_range
|
|
static inline void flush_icache_range(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_icache_user_range
|
|
#define flush_icache_user_range flush_icache_range
|
|
#endif
|
|
|
|
#ifndef flush_icache_page
|
|
static inline void flush_icache_page(struct vm_area_struct *vma,
|
|
struct page *page)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_icache_user_page
|
|
static inline void flush_icache_user_page(struct vm_area_struct *vma,
|
|
struct page *page,
|
|
unsigned long addr, int len)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_vmap
|
|
static inline void flush_cache_vmap(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_vunmap
|
|
static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef copy_to_user_page
|
|
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
|
|
do { \
|
|
instrument_copy_to_user((void __user *)dst, src, len); \
|
|
memcpy(dst, src, len); \
|
|
flush_icache_user_page(vma, page, vaddr, len); \
|
|
} while (0)
|
|
#endif
|
|
|
|
|
|
#ifndef copy_from_user_page
|
|
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
|
|
do { \
|
|
instrument_copy_from_user_before(dst, (void __user *)src, \
|
|
len); \
|
|
memcpy(dst, src, len); \
|
|
instrument_copy_from_user_after(dst, (void __user *)src, len, \
|
|
0); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#endif /* _ASM_GENERIC_CACHEFLUSH_H */
|