#include <linux/threads.h>
#include <linux/mm.h>
+#define arch_add_exec_range(mm, limit) \
+ do { (void)(mm), (void)(limit); } while (0)
+#define arch_flush_exec_range(mm) \
+ do { (void)(mm); } while (0)
+#define arch_remove_exec_range(mm, limit) \
+ do { (void)(mm), (void)(limit); } while (0)
+
#define pmd_populate_kernel(mm, pmd, pte) \
set_pmd(pmd, __pmd(_PAGE_TABLE | __pa(pte)))
#define pud_populate(mm, pud, pmd) \
set_pmd(pmd, __pmd(_PAGE_TABLE | (page_to_pfn(pte) << PAGE_SHIFT)));
}
-extern __inline__ pmd_t *get_pmd(void)
+static inline pmd_t *get_pmd(void)
{
return (pmd_t *)get_zeroed_page(GFP_KERNEL);
}
-extern __inline__ void pmd_free(pmd_t *pmd)
+static inline void pmd_free(pmd_t *pmd)
{
BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
free_page((unsigned long)pmd);
free_page((unsigned long)pud);
}
+static inline void pgd_list_add(pgd_t *pgd)
+{
+ struct page *page = virt_to_page(pgd);
+
+ spin_lock(&pgd_lock);
+ page->index = (pgoff_t)pgd_list;
+ if (pgd_list)
+ pgd_list->private = (unsigned long)&page->index;
+ pgd_list = page;
+ page->private = (unsigned long)&pgd_list;
+ spin_unlock(&pgd_lock);
+}
+
+static inline void pgd_list_del(pgd_t *pgd)
+{
+ struct page *next, **pprev, *page = virt_to_page(pgd);
+
+ spin_lock(&pgd_lock);
+ next = (struct page *)page->index;
+ pprev = (struct page **)page->private;
+ *pprev = next;
+ if (next)
+ next->private = (unsigned long)pprev;
+ spin_unlock(&pgd_lock);
+}
+
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
unsigned boundary;
pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
if (!pgd)
return NULL;
+ pgd_list_add(pgd);
/*
* Copy kernel pointers in from init.
* Could keep a freelist or slab cache of those because the kernel
static inline void pgd_free(pgd_t *pgd)
{
BUG_ON((unsigned long)pgd & (PAGE_SIZE-1));
+ pgd_list_del(pgd);
free_page((unsigned long)pgd);
}
/* Should really implement gc for free page table pages. This could be
done with a reference count in struct page. */
-extern __inline__ void pte_free_kernel(pte_t *pte)
+static inline void pte_free_kernel(pte_t *pte)
{
BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
free_page((unsigned long)pte);
}
-extern inline void pte_free(struct page *pte)
+static inline void pte_free(struct page *pte)
{
__free_page(pte);
}