[PATCH] ARM SMP: TLB implementations only affect local CPU

The existing TLB flush implementations only have an effect on
the local CPU.  Prefix them with local_.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 22 insertions, 6 deletions

diff --git a/include/asm-arm/tlbflush.h b/include/asm-arm/tlbflush.h
index 8a864b118569..9387a5e1ffe0 100644
--- a/include/asm-arm/tlbflush.h
+++ b/include/asm-arm/tlbflush.h
@@ -235,7 +235,7 @@ extern struct cpu_tlb_fns cpu_tlb;
 
 #define tlb_flag(f)     ((always_tlb_flags & (f)) || (__tlb_flag & possible_tlb_flags & (f)))
 
-static inline void flush_tlb_all(void)
+static inline void local_flush_tlb_all(void)
 {
         const int zero = 0;
         const unsigned int __tlb_flag = __cpu_tlb_flags;
@@ -253,7 +253,7 @@ static inline void flush_tlb_all(void)
                 asm("mcr%? p15, 0, %0, c8, c5, 0" : : "r" (zero));
 }
 
-static inline void flush_tlb_mm(struct mm_struct *mm)
+static inline void local_flush_tlb_mm(struct mm_struct *mm)
 {
         const int zero = 0;
         const int asid = ASID(mm);
@@ -282,7 +282,7 @@ static inline void flush_tlb_mm(struct mm_struct *mm)
 }
 
 static inline void
-flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
+local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
 {
         const int zero = 0;
         const unsigned int __tlb_flag = __cpu_tlb_flags;
@@ -313,7 +313,7 @@ flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
                 asm("mcr%? p15, 0, %0, c8, c5, 1" : : "r" (uaddr));
 }
 
-static inline void flush_tlb_kernel_page(unsigned long kaddr)
+static inline void local_flush_tlb_kernel_page(unsigned long kaddr)
 {
         const int zero = 0;
         const unsigned int __tlb_flag = __cpu_tlb_flags;
@@ -384,8 +384,24 @@ static inline void clean_pmd_entry(pmd_t *pmd)
 /*
  * Convert calls to our calling convention.
  */
-#define flush_tlb_range(vma,start,end)  __cpu_flush_user_tlb_range(start,end,vma)
-#define flush_tlb_kernel_range(s,e)     __cpu_flush_kern_tlb_range(s,e)
+#define local_flush_tlb_range(vma,start,end)    __cpu_flush_user_tlb_range(start,end,vma)
+#define local_flush_tlb_kernel_range(s,e)       __cpu_flush_kern_tlb_range(s,e)
+
+#ifndef CONFIG_SMP
+#define flush_tlb_all           local_flush_tlb_all
+#define flush_tlb_mm            local_flush_tlb_mm
+#define flush_tlb_page          local_flush_tlb_page
+#define flush_tlb_kernel_page   local_flush_tlb_kernel_page
+#define flush_tlb_range         local_flush_tlb_range
+#define flush_tlb_kernel_range  local_flush_tlb_kernel_range
+#else
+extern void flush_tlb_all(void);
+extern void flush_tlb_mm(struct mm_struct *mm);
+extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr);
+extern void flush_tlb_kernel_page(unsigned long kaddr);
+extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
+extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+#endif
 
 /*
  * if PG_dcache_dirty is set for the page, we need to ensure that any