Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-alpha/tlbflush.h b/include/asm-alpha/tlbflush.h
new file mode 100644
index 0000000..9d484c1
--- /dev/null
+++ b/include/asm-alpha/tlbflush.h
@@ -0,0 +1,158 @@
+#ifndef _ALPHA_TLBFLUSH_H
+#define _ALPHA_TLBFLUSH_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <asm/compiler.h>
+
+#ifndef __EXTERN_INLINE
+#define __EXTERN_INLINE extern inline
+#define __MMU_EXTERN_INLINE
+#endif
+
+extern void __load_new_mm_context(struct mm_struct *);
+
+
+/* Use a few helper functions to hide the ugly broken ASN
+ numbers on early Alphas (ev4 and ev45). */
+
+__EXTERN_INLINE void
+ev4_flush_tlb_current(struct mm_struct *mm)
+{
+ __load_new_mm_context(mm);
+ tbiap();
+}
+
+__EXTERN_INLINE void
+ev5_flush_tlb_current(struct mm_struct *mm)
+{
+ __load_new_mm_context(mm);
+}
+
+/* Flush just one page in the current TLB set. We need to be very
+ careful about the icache here, there is no way to invalidate a
+ specific icache page. */
+
+__EXTERN_INLINE void
+ev4_flush_tlb_current_page(struct mm_struct * mm,
+ struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ int tbi_flag = 2;
+ if (vma->vm_flags & VM_EXEC) {
+ __load_new_mm_context(mm);
+ tbi_flag = 3;
+ }
+ tbi(tbi_flag, addr);
+}
+
+__EXTERN_INLINE void
+ev5_flush_tlb_current_page(struct mm_struct * mm,
+ struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ if (vma->vm_flags & VM_EXEC)
+ __load_new_mm_context(mm);
+ else
+ tbi(2, addr);
+}
+
+
+#ifdef CONFIG_ALPHA_GENERIC
+# define flush_tlb_current alpha_mv.mv_flush_tlb_current
+# define flush_tlb_current_page alpha_mv.mv_flush_tlb_current_page
+#else
+# ifdef CONFIG_ALPHA_EV4
+# define flush_tlb_current ev4_flush_tlb_current
+# define flush_tlb_current_page ev4_flush_tlb_current_page
+# else
+# define flush_tlb_current ev5_flush_tlb_current
+# define flush_tlb_current_page ev5_flush_tlb_current_page
+# endif
+#endif
+
+#ifdef __MMU_EXTERN_INLINE
+#undef __EXTERN_INLINE
+#undef __MMU_EXTERN_INLINE
+#endif
+
+/* Flush current user mapping. */
+static inline void
+flush_tlb(void)
+{
+ flush_tlb_current(current->active_mm);
+}
+
+/* Flush someone else's user mapping. */
+static inline void
+flush_tlb_other(struct mm_struct *mm)
+{
+ unsigned long *mmc = &mm->context[smp_processor_id()];
+ /* Check it's not zero first to avoid cacheline ping pong
+ when possible. */
+ if (*mmc) *mmc = 0;
+}
+
+/* Flush a specified range of user mapping page tables from TLB.
+ Although Alpha uses VPTE caches, this can be a nop, as Alpha does
+ not have finegrained tlb flushing, so it will flush VPTE stuff
+ during next flush_tlb_range. */
+
+static inline void
+flush_tlb_pgtables(struct mm_struct *mm, unsigned long start,
+ unsigned long end)
+{
+}
+
+#ifndef CONFIG_SMP
+/* Flush everything (kernel mapping may also have changed
+ due to vmalloc/vfree). */
+static inline void flush_tlb_all(void)
+{
+ tbia();
+}
+
+/* Flush a specified user mapping. */
+static inline void
+flush_tlb_mm(struct mm_struct *mm)
+{
+ if (mm == current->active_mm)
+ flush_tlb_current(mm);
+ else
+ flush_tlb_other(mm);
+}
+
+/* Page-granular tlb flush. */
+static inline void
+flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
+{
+ struct mm_struct *mm = vma->vm_mm;
+
+ if (mm == current->active_mm)
+ flush_tlb_current_page(mm, vma, addr);
+ else
+ flush_tlb_other(mm);
+}
+
+/* Flush a specified range of user mapping. On the Alpha we flush
+ the whole user tlb. */
+static inline void
+flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end)
+{
+ flush_tlb_mm(vma->vm_mm);
+}
+
+#else /* CONFIG_SMP */
+
+extern void flush_tlb_all(void);
+extern void flush_tlb_mm(struct mm_struct *);
+extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
+extern void flush_tlb_range(struct vm_area_struct *, unsigned long,
+ unsigned long);
+
+#endif /* CONFIG_SMP */
+
+#define flush_tlb_kernel_range(start, end) flush_tlb_all()
+
+#endif /* _ALPHA_TLBFLUSH_H */