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asm-generic: fix a compilation warning 

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>
This commit is contained in:
Qian Cai 2019-07-16 16:27:06 -07:00 committed by Linus Torvalds
parent 3a7f0adfe7
commit c296d4dc13
1 changed files with 60 additions and 14 deletions
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74
include/asm-generic/cacheflush.h
View File

@ -5,24 +5,70 @@
/* 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
*/
#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_icache_range(start, end) do { } while (0)
#define flush_icache_page(vma,pg) do { } while (0)
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
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 { \