sh64: generic quicklist support.

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh64/Kconfig

@@ -17,6 +17,9 @@ config MMU
 	bool
 	default y
 
+config QUICKLIST
+	def_bool y
+
 config RWSEM_GENERIC_SPINLOCK
 	bool
 	default y

arch/sh64/mm/init.c

@@ -84,7 +84,7 @@ void show_mem(void)
 	printk("%d reserved pages\n",reserved);
 	printk("%d pages shared\n",shared);
 	printk("%d pages swap cached\n",cached);
-	printk("%ld pages in page table cache\n",pgtable_cache_size);
+	printk("%ld pages in page table cache\n", quicklist_total_size());
 }
 
 /*

include/asm-sh64/pgalloc.h

@@ -14,13 +14,9 @@
  *
  */
 
-#include <linux/threads.h>
 #include <linux/mm.h>
-
-#define pgd_quicklist (current_cpu_data.pgd_quick)
-#define pmd_quicklist (current_cpu_data.pmd_quick)
-#define pte_quicklist (current_cpu_data.pte_quick)
-#define pgtable_cache_size (current_cpu_data.pgtable_cache_sz)
+#include <linux/quicklist.h>
+#include <asm/page.h>
 
 static inline void pgd_init(unsigned long page)
 {
@@ -45,84 +41,37 @@ static inline pgd_t *get_pgd_slow(void)
 	return ret;
 }
 
-static inline pgd_t *get_pgd_fast(void)
-{
-	unsigned long *ret;
-
-	if ((ret = pgd_quicklist) != NULL) {
-		pgd_quicklist = (unsigned long *)(*ret);
-		ret[0] = 0;
-		pgtable_cache_size--;
-	} else
-		ret = (unsigned long *)get_pgd_slow();
-
-	if (ret) {
-		memset(ret, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
-	}
-	return (pgd_t *)ret;
-}
-
-static inline void free_pgd_fast(pgd_t *pgd)
-{
-	*(unsigned long *)pgd = (unsigned long) pgd_quicklist;
-	pgd_quicklist = (unsigned long *) pgd;
-	pgtable_cache_size++;
-}
-
-static inline void free_pgd_slow(pgd_t *pgd)
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-	kfree((void *)pgd);
+	return quicklist_alloc(0, GFP_KERNEL, NULL);
 }
 
-extern pte_t *get_pte_slow(pmd_t *pmd, unsigned long address_preadjusted);
-extern pte_t *get_pte_kernel_slow(pmd_t *pmd, unsigned long address_preadjusted);
-
-static inline pte_t *get_pte_fast(void)
+static inline void pgd_free(pgd_t *pgd)
 {
-	unsigned long *ret;
-
-	if((ret = (unsigned long *)pte_quicklist) != NULL) {
-		pte_quicklist = (unsigned long *)(*ret);
-		ret[0] = ret[1];
-		pgtable_cache_size--;
-	}
-	return (pte_t *)ret;
+	quicklist_free(0, NULL, pgd);
 }
 
-static inline void free_pte_fast(pte_t *pte)
+static inline struct page *pte_alloc_one(struct mm_struct *mm,
+					 unsigned long address)
 {
-	*(unsigned long *)pte = (unsigned long) pte_quicklist;
-	pte_quicklist = (unsigned long *) pte;
-	pgtable_cache_size++;
+	void *pg = quicklist_alloc(0, GFP_KERNEL, NULL);
+	return pg ? virt_to_page(pg) : NULL;
 }
 
 static inline void pte_free_kernel(pte_t *pte)
 {
-	free_page((unsigned long)pte);
+	quicklist_free(0, NULL, pte);
 }
 
 static inline void pte_free(struct page *pte)
 {
-	__free_page(pte);
+	quicklist_free_page(0, NULL, pte);
 }
 
 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 					   unsigned long address)
 {
-	pte_t *pte;
-
-	pte = (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT|__GFP_ZERO);
-
-	return pte;
-}
-
-static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
-	struct page *pte;
-
-	pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
-
-	return pte;
+	return quicklist_alloc(0, GFP_KERNEL, NULL);
 }
 
 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
@@ -142,31 +91,23 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long add
 
 #elif defined(CONFIG_SH64_PGTABLE_3_LEVEL)
 
-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_t *) __get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
-	return pmd;
+	return quicklist_alloc(0, GFP_KERNEL, NULL);
 }
 
-static __inline__ void pmd_free(pmd_t *pmd)
+static inline void pmd_free(pmd_t *pmd)
 {
-	free_page((unsigned long) pmd);
+	quicklist_free(0, NULL, pmd);
 }
 
-#define pgd_populate(mm, pgd, pmd) pgd_set(pgd, pmd)
+#define pgd_populate(mm, pgd, pmd)	pgd_set(pgd, pmd)
 #define __pmd_free_tlb(tlb,pmd)		pmd_free(pmd)
 
 #else
 #error "No defined page table size"
 #endif
 
-#define check_pgt_cache()		do { } while (0)
-#define pgd_free(pgd)		free_pgd_slow(pgd)
-#define pgd_alloc(mm)		get_pgd_fast()
-
-extern int do_check_pgt_cache(int, int);
-
 #define pmd_populate_kernel(mm, pmd, pte) \
 	set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) (pte)))
 
@@ -176,4 +117,9 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 	set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) page_address (pte)));
 }
 
+static inline void check_pgt_cache(void)
+{
+	quicklist_trim(0, NULL, 25, 16);
+}
+
 #endif /* __ASM_SH64_PGALLOC_H */

mm/Kconfig

@@ -166,5 +166,5 @@ config ZONE_DMA_FLAG
 config NR_QUICK
 	int
 	depends on QUICKLIST
-	default "2" if SUPERH
+	default "2" if (SUPERH && !SUPERH64)
 	default "1"