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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
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101
include/asm-sparc64/pgalloc.h
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@@ -19,16 +19,15 @@
#else
extern struct pgtable_cache_struct {
unsigned long *pgd_cache;
unsigned long *pte_cache[2];
unsigned long *pte_cache;
unsigned int pgcache_size;
} pgt_quicklists;
#endif
#define pgd_quicklist (pgt_quicklists.pgd_cache)
#define pmd_quicklist ((unsigned long *)0)
#define pte_quicklist (pgt_quicklists.pte_cache)
#define pgtable_cache_size (pgt_quicklists.pgcache_size)
static __inline__ void free_pgd_fast(pgd_t *pgd)
static inline void free_pgd_fast(pgd_t *pgd)
{
preempt_disable();
*(unsigned long *)pgd = (unsigned long) pgd_quicklist;
@@ -37,7 +36,7 @@ static __inline__ void free_pgd_fast(pgd_t *pgd)
preempt_enable();
}
static __inline__ pgd_t *get_pgd_fast(void)
static inline pgd_t *get_pgd_fast(void)
{
unsigned long *ret;
@@ -56,47 +55,35 @@ static __inline__ pgd_t *get_pgd_fast(void)
return (pgd_t *)ret;
}
static __inline__ void free_pgd_slow(pgd_t *pgd)
static inline void free_pgd_slow(pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
/* XXX This crap can die, no longer using virtual page tables... */
#ifdef DCACHE_ALIASING_POSSIBLE
#define VPTE_COLOR(address) (((address) >> (PAGE_SHIFT + 10)) & 1UL)
#define DCACHE_COLOR(address) (((address) >> PAGE_SHIFT) & 1UL)
#else
#define VPTE_COLOR(address) 0
#define DCACHE_COLOR(address) 0
#endif
#define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD)
static __inline__ pmd_t *pmd_alloc_one_fast(struct mm_struct *mm, unsigned long address)
static inline pmd_t *pmd_alloc_one_fast(void)
{
unsigned long *ret;
int color = 0;
preempt_disable();
if (pte_quicklist[color] == NULL)
color = 1;
if((ret = (unsigned long *)pte_quicklist[color]) != NULL) {
pte_quicklist[color] = (unsigned long *)(*ret);
ret = (unsigned long *) pte_quicklist;
if (likely(ret)) {
pte_quicklist = (unsigned long *)(*ret);
ret[0] = 0;
pgtable_cache_size--;
}
preempt_enable();
return (pmd_t *)ret;
return (pmd_t *) ret;
}
static __inline__ pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
pmd_t *pmd;
pmd = pmd_alloc_one_fast(mm, address);
if (!pmd) {
pmd = pmd_alloc_one_fast();
if (unlikely(!pmd)) {
pmd = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
if (pmd)
memset(pmd, 0, PAGE_SIZE);
@@ -104,18 +91,16 @@ static __inline__ pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addre
return pmd;
}
static __inline__ void free_pmd_fast(pmd_t *pmd)
static inline void free_pmd_fast(pmd_t *pmd)
{
unsigned long color = DCACHE_COLOR((unsigned long)pmd);
preempt_disable();
*(unsigned long *)pmd = (unsigned long) pte_quicklist[color];
pte_quicklist[color] = (unsigned long *) pmd;
*(unsigned long *)pmd = (unsigned long) pte_quicklist;
pte_quicklist = (unsigned long *) pmd;
pgtable_cache_size++;
preempt_enable();
}
static __inline__ void free_pmd_slow(pmd_t *pmd)
static inline void free_pmd_slow(pmd_t *pmd)
{
free_page((unsigned long)pmd);
}
@@ -124,48 +109,54 @@ static __inline__ void free_pmd_slow(pmd_t *pmd)
#define pmd_populate(MM,PMD,PTE_PAGE) \
pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address);
static inline struct page *
pte_alloc_one(struct mm_struct *mm, unsigned long addr)
static inline pte_t *pte_alloc_one_fast(void)
{
pte_t *pte = pte_alloc_one_kernel(mm, addr);
if (pte)
return virt_to_page(pte);
return NULL;
}
static __inline__ pte_t *pte_alloc_one_fast(struct mm_struct *mm, unsigned long address)
{
unsigned long color = VPTE_COLOR(address);
unsigned long *ret;
preempt_disable();
if((ret = (unsigned long *)pte_quicklist[color]) != NULL) {
pte_quicklist[color] = (unsigned long *)(*ret);
ret = (unsigned long *) pte_quicklist;
if (likely(ret)) {
pte_quicklist = (unsigned long *)(*ret);
ret[0] = 0;
pgtable_cache_size--;
}
preempt_enable();
return (pte_t *)ret;
return (pte_t *) ret;
}
static __inline__ void free_pte_fast(pte_t *pte)
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
unsigned long color = DCACHE_COLOR((unsigned long)pte);
pte_t *ptep = pte_alloc_one_fast();
if (likely(ptep))
return ptep;
return (pte_t *) get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
}
static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr)
{
pte_t *pte = pte_alloc_one_fast();
if (likely(pte))
return virt_to_page(pte);
return alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
}
static inline void free_pte_fast(pte_t *pte)
{
preempt_disable();
*(unsigned long *)pte = (unsigned long) pte_quicklist[color];
pte_quicklist[color] = (unsigned long *) pte;
*(unsigned long *)pte = (unsigned long) pte_quicklist;
pte_quicklist = (unsigned long *) pte;
pgtable_cache_size++;
preempt_enable();
}
static __inline__ void free_pte_slow(pte_t *pte)
static inline void free_pte_slow(pte_t *pte)
{
free_page((unsigned long)pte);
free_page((unsigned long) pte);
}
static inline void pte_free_kernel(pte_t *pte)