x86: convert cacheflush macros inline functions

Impact: cleanup

Unused macro parameters cause spurious unused variable warnings.
Convert all cacheflush macros to inline functions to avoid the
warnings and achieve better type checking.

Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h
index 2f84665..5b301b7 100644 (file)
--- a/arch/x86/include/asm/cacheflush.h
+++ b/arch/x86/include/asm/cacheflush.h
@@ -5,24 +5,43 @@
 #include <linux/mm.h>
 
 /* Caches aren't brain-dead on the intel. */
-#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 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,
+                                          unsigned long 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)     \
-       memcpy((dst), (src), (len))
-#define copy_from_user_page(vma, page, vaddr, dst, src, len)   \
-       memcpy((dst), (src), (len))
+static inline void copy_to_user_page(struct vm_area_struct *vma,
+                                    struct page *page, unsigned long vaddr,
+                                    void *dst, const void *src,
+                                    unsigned long len)
+{
+       memcpy(dst, src, len);
+}
+
+static inline void copy_from_user_page(struct vm_area_struct *vma,
+                                      struct page *page, unsigned long vaddr,
+                                      void *dst, const void *src,
+                                      unsigned long len)
+{
+       memcpy(dst, src, len);
+}
 
 #define PG_non_WB                              PG_arch_1
 PAGEFLAG(NonWB, non_WB)