#ifndef _SPARC64_PGALLOC_H
#define _SPARC64_PGALLOC_H
+#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
-#include <linux/slab.h>
#include <asm/spitfire.h>
#include <asm/cpudata.h>
#include <asm/page.h>
/* Page table allocation/freeing. */
-extern kmem_cache_t *pgtable_cache;
+#ifdef CONFIG_SMP
+/* Sliiiicck */
+#define pgt_quicklists local_cpu_data()
+#else
+extern struct pgtable_cache_struct {
+ unsigned long *pgd_cache;
+ unsigned long *pte_cache[2];
+ 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)
+{
+ preempt_disable();
+ *(unsigned long *)pgd = (unsigned long) pgd_quicklist;
+ pgd_quicklist = (unsigned long *) pgd;
+ pgtable_cache_size++;
+ preempt_enable();
+}
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+static __inline__ pgd_t *get_pgd_fast(void)
{
- return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
+ unsigned long *ret;
+
+ preempt_disable();
+ if((ret = pgd_quicklist) != NULL) {
+ pgd_quicklist = (unsigned long *)(*ret);
+ ret[0] = 0;
+ pgtable_cache_size--;
+ preempt_enable();
+ } else {
+ preempt_enable();
+ ret = (unsigned long *) __get_free_page(GFP_KERNEL|__GFP_REPEAT);
+ if(ret)
+ memset(ret, 0, PAGE_SIZE);
+ }
+ return (pgd_t *)ret;
}
-static inline void pgd_free(pgd_t *pgd)
+static __inline__ void free_pgd_slow(pgd_t *pgd)
{
- kmem_cache_free(pgtable_cache, pgd);
+ free_page((unsigned long)pgd);
}
+#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(struct mm_struct *mm, unsigned long addr)
+static __inline__ pmd_t *pmd_alloc_one_fast(struct mm_struct *mm, unsigned long address)
{
- return kmem_cache_alloc(pgtable_cache,
- GFP_KERNEL|__GFP_REPEAT);
+ 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[0] = 0;
+ pgtable_cache_size--;
+ }
+ preempt_enable();
+
+ return (pmd_t *)ret;
}
-static inline void pmd_free(pmd_t *pmd)
+static __inline__ pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
- kmem_cache_free(pgtable_cache, pmd);
+ pmd_t *pmd;
+
+ pmd = pmd_alloc_one_fast(mm, address);
+ if (!pmd) {
+ pmd = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
+ if (pmd)
+ memset(pmd, 0, PAGE_SIZE);
+ }
+ return pmd;
}
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
- unsigned long address)
+static __inline__ void free_pmd_fast(pmd_t *pmd)
{
- return kmem_cache_alloc(pgtable_cache,
- GFP_KERNEL|__GFP_REPEAT);
+ unsigned long color = DCACHE_COLOR((unsigned long)pmd);
+
+ preempt_disable();
+ *(unsigned long *)pmd = (unsigned long) pte_quicklist[color];
+ pte_quicklist[color] = (unsigned long *) pmd;
+ pgtable_cache_size++;
+ preempt_enable();
}
-static inline struct page *pte_alloc_one(struct mm_struct *mm,
- unsigned long address)
+static __inline__ void free_pmd_slow(pmd_t *pmd)
{
- return virt_to_page(pte_alloc_one_kernel(mm, address));
+ free_page((unsigned long)pmd);
}
-
-static inline void pte_free_kernel(pte_t *pte)
+
+#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
+#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)
+{
+ 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)
{
- kmem_cache_free(pgtable_cache, pte);
+ 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[0] = 0;
+ pgtable_cache_size--;
+ }
+ preempt_enable();
+ return (pte_t *)ret;
}
-static inline void pte_free(struct page *ptepage)
+static __inline__ void free_pte_fast(pte_t *pte)
{
- pte_free_kernel(page_address(ptepage));
+ unsigned long color = DCACHE_COLOR((unsigned long)pte);
+
+ preempt_disable();
+ *(unsigned long *)pte = (unsigned long) pte_quicklist[color];
+ pte_quicklist[color] = (unsigned long *) pte;
+ pgtable_cache_size++;
+ preempt_enable();
}
+static __inline__ void free_pte_slow(pte_t *pte)
+{
+ free_page((unsigned long)pte);
+}
-#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
-#define pmd_populate(MM,PMD,PTE_PAGE) \
- pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
+static inline void pte_free_kernel(pte_t *pte)
+{
+ free_pte_fast(pte);
+}
-#define check_pgt_cache() do { } while (0)
+static inline void pte_free(struct page *ptepage)
+{
+ free_pte_fast(page_address(ptepage));
+}
-#define arch_add_exec_range(mm, limit) do { ; } while (0)
-#define arch_flush_exec_range(mm) do { ; } while (0)
-#define arch_remove_exec_range(mm, limit) do { ; } while (0)
+#define pmd_free(pmd) free_pmd_fast(pmd)
+#define pgd_free(pgd) free_pgd_fast(pgd)
+#define pgd_alloc(mm) get_pgd_fast()
#endif /* _SPARC64_PGALLOC_H */
git://git.onelab.eu / linux-2.6.git / blobdiff