mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-11 13:04:03 +08:00
c296d4dc13
Fix this compilation warning on x86 by making flush_cache_vmap() inline.
lib/ioremap.c: In function 'ioremap_page_range':
lib/ioremap.c:214:16: warning: variable 'start' set but not used [-Wunused-but-set-variable]
unsigned long start;
^~~~~
While at it, convert all other similar functions to inline for
consistency.
Link: http://lkml.kernel.org/r/1562594592-15228-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_CACHEFLUSH_H
|
|
#define __ASM_CACHEFLUSH_H
|
|
|
|
/* Keep includes the same across arches. */
|
|
#include <linux/mm.h>
|
|
|
|
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
|
|
|
|
/*
|
|
* The cache doesn't need to be flushed when TLB entries change when
|
|
* the cache is mapped to physical memory, not virtual memory
|
|
*/
|
|
static inline void flush_cache_all(void)
|
|
{
|
|
}
|
|
|
|
static inline void flush_cache_mm(struct mm_struct *mm)
|
|
{
|
|
}
|
|
|
|
static inline void flush_cache_dup_mm(struct mm_struct *mm)
|
|
{
|
|
}
|
|
|
|
static inline void flush_cache_range(struct vm_area_struct *vma,
|
|
unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
}
|
|
|
|
static inline void flush_cache_page(struct vm_area_struct *vma,
|
|
unsigned long vmaddr,
|
|
unsigned long pfn)
|
|
{
|
|
}
|
|
|
|
static inline void flush_dcache_page(struct page *page)
|
|
{
|
|
}
|
|
|
|
static inline void flush_dcache_mmap_lock(struct address_space *mapping)
|
|
{
|
|
}
|
|
|
|
static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
|
|
{
|
|
}
|
|
|
|
static inline void flush_icache_range(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
|
|
static inline void flush_icache_page(struct vm_area_struct *vma,
|
|
struct page *page)
|
|
{
|
|
}
|
|
|
|
static inline void flush_icache_user_range(struct vm_area_struct *vma,
|
|
struct page *page,
|
|
unsigned long addr, int len)
|
|
{
|
|
}
|
|
|
|
static inline void flush_cache_vmap(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
|
|
static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
|
|
#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 /* __ASM_CACHEFLUSH_H */
|