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[SPARC64]: Dynamically grow TSB in response to RSS growth.

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As the RSS grows, grow the TSB in order to reduce the likelyhood
of hash collisions and thus poor hit rates in the TSB.

This definitely needs some serious tuning.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-01-31 18:31:38 -08:00
committed by David S. Miller
parent 98c5584cfc
commit bd40791e1d
5 changed files with 184 additions and 10 deletions
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7
arch/sparc64/mm/init.c
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@@ -246,9 +246,11 @@ static __inline__ void clear_dcache_dirty_cpu(struct page *page, unsigned long c
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
struct mm_struct *mm;
struct page *page;
unsigned long pfn;
unsigned long pg_flags;
unsigned long mm_rss;
pfn = pte_pfn(pte);
if (pfn_valid(pfn) &&
@@ -270,6 +272,11 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t p
put_cpu();
}
mm = vma->vm_mm;
mm_rss = get_mm_rss(mm);
if (mm_rss >= mm->context.tsb_rss_limit)
tsb_grow(mm, mm_rss, GFP_ATOMIC);
}
void flush_dcache_page(struct page *page)