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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-29 09:40:28 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-06-29 09:40:28 +0100
commit99a0616bcdabec9005159e50af91a36cc3f8bda8 (patch)
tree4c5bb08f6b392ffbc8a07d3b1d900971c6776243 /include/asm-arm
parenta839688362e32f01608838516036697e30618b39 (diff)
parent053a7b5b7617a72d7c61b6f84196d1c0f79b9849 (diff)
Merge with ../linux-2.6-smp
Diffstat (limited to 'include/asm-arm')
-rw-r--r--include/asm-arm/system.h12
-rw-r--r--include/asm-arm/tlbflush.h28
2 files changed, 31 insertions, 9 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index 3d0d2860b6db..cdf49f442fd2 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 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