Merge with ../linux-2.6-smp

2 files changed, 31 insertions, 9 deletions

diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index 3d0d2860b6d..cdf49f442fd 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -290,7 +290,6 @@ do {									\
 })
 
 #ifdef CONFIG_SMP
-#error SMP not supported
 
 #define smp_mb()		mb()
 #define smp_rmb()		rmb()
@@ -304,6 +303,8 @@ do {									\
 #define smp_wmb()		barrier()
 #define smp_read_barrier_depends()		do { } while(0)
 
+#endif /* CONFIG_SMP */
+
 #if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110)
 /*
  * On the StrongARM, "swp" is terminally broken since it bypasses the
@@ -316,9 +317,16 @@ do {									\
  *
  * We choose (1) since its the "easiest" to achieve here and is not
  * dependent on the processor type.
+ *
+ * NOTE that this solution won't work on an SMP system, so explcitly
+ * forbid it here.
  */
+#ifdef CONFIG_SMP
+#error SMP is not supported on SA1100/SA110
+#else
 #define swp_is_buggy
 #endif
+#endif
 
 static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
 {
@@ -361,8 +369,6 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
 	return ret;
 }
 
-#endif /* CONFIG_SMP */
-
 #endif /* __ASSEMBLY__ */
 
 #define arch_align_stack(x) (x)
diff --git a/include/asm-arm/tlbflush.h b/include/asm-arm/tlbflush.h
index 8a864b11856..9387a5e1ffe 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