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[SPARC64]: No need to D-cache color page tables any longer.

Browse source 
Unlike the virtual page tables, the new TSB scheme does not
require this ugly hack.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-01-31 18:30:13 -08:00 • committed by David S. Miller
parent 74bf4312ff
commit 05e28f9de6
3 changed files with 55 additions and 122 deletions
Download patch file Download diff file Expand all files Collapse all files

71
arch/sparc64/mm/init.c
View file

@ -145,6 +145,10 @@ int bigkernel = 0;
#define PGT_CACHE_LOW 25
#define PGT_CACHE_HIGH 50
#ifndef CONFIG_SMP
struct pgtable_cache_struct pgt_quicklists;
#endif
void check_pgt_cache(void)
{
preempt_disable();
@ -152,10 +156,8 @@ void check_pgt_cache(void)
do {
if (pgd_quicklist)
free_pgd_slow(get_pgd_fast());
if (pte_quicklist[0])
free_pte_slow(pte_alloc_one_fast(NULL, 0));
if (pte_quicklist[1])
free_pte_slow(pte_alloc_one_fast(NULL, 1 << (PAGE_SHIFT + 10)));
if (pte_quicklist)
free_pte_slow(pte_alloc_one_fast());
} while (pgtable_cache_size > PGT_CACHE_LOW);
}
preempt_enable();
@ -962,67 +964,6 @@ out:
spin_unlock(&ctx_alloc_lock);
}
#ifndef CONFIG_SMP
struct pgtable_cache_struct pgt_quicklists;
#endif
/* XXX We don't need to color these things in the D-cache any longer. */
#ifdef DCACHE_ALIASING_POSSIBLE
#define DC_ALIAS_SHIFT 1
#else
#define DC_ALIAS_SHIFT 0
#endif
pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
struct page *page;
unsigned long color;
{
pte_t *ptep = pte_alloc_one_fast(mm, address);
if (ptep)
return ptep;
}
color = VPTE_COLOR(address);
page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, DC_ALIAS_SHIFT);
if (page) {
unsigned long *to_free;
unsigned long paddr;
pte_t *pte;
#ifdef DCACHE_ALIASING_POSSIBLE
set_page_count(page, 1);
ClearPageCompound(page);
set_page_count((page + 1), 1);
ClearPageCompound(page + 1);
#endif
paddr = (unsigned long) page_address(page);
memset((char *)paddr, 0, (PAGE_SIZE << DC_ALIAS_SHIFT));
if (!color) {
pte = (pte_t *) paddr;
to_free = (unsigned long *) (paddr + PAGE_SIZE);
} else {
pte = (pte_t *) (paddr + PAGE_SIZE);
to_free = (unsigned long *) paddr;
}
#ifdef DCACHE_ALIASING_POSSIBLE
/* Now free the other one up, adjust cache size. */
preempt_disable();
*to_free = (unsigned long) pte_quicklist[color ^ 0x1];
pte_quicklist[color ^ 0x1] = to_free;
pgtable_cache_size++;
preempt_enable();
#endif
return pte;
}
return NULL;
}
void sparc_ultra_dump_itlb(void)
{
int slot;