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Pull fix-slow-tlb-purge into release branch

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This commit is contained in:
Tony Luck
2005-10-28 15:27:36 -07:00
parent 2d8f6a5219 c1902aae32
commit 8496f2a451
3 changed files with 29 additions and 20 deletions
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16
arch/ia64/mm/tlb.c
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@@ -87,10 +87,15 @@ wrap_mmu_context (struct mm_struct *mm)
}
void
ia64_global_tlb_purge (unsigned long start, unsigned long end, unsigned long nbits)
ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long nbits)
{
static DEFINE_SPINLOCK(ptcg_lock);
if (mm != current->active_mm) {
flush_tlb_all();
return;
}
/* HW requires global serialization of ptc.ga. */
spin_lock(&ptcg_lock);
{
@@ -136,15 +141,12 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long
unsigned long size = end - start;
unsigned long nbits;
#ifndef CONFIG_SMP
if (mm != current->active_mm) {
/* this does happen, but perhaps it's not worth optimizing for? */
#ifdef CONFIG_SMP
flush_tlb_all();
#else
mm->context = 0;
#endif
return;
}
#endif
nbits = ia64_fls(size + 0xfff);
while (unlikely (((1UL << nbits) & purge.mask) == 0) && (nbits < purge.max_bits))
@@ -154,7 +156,7 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long
start &= ~((1UL << nbits) - 1);
# ifdef CONFIG_SMP
platform_global_tlb_purge(start, end, nbits);
platform_global_tlb_purge(mm, start, end, nbits);
# else
do {
ia64_ptcl(start, (nbits<<2));