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-rw-r--r--arch/frv/mm/pgalloc.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/frv/mm/pgalloc.c b/arch/frv/mm/pgalloc.c
deleted file mode 100644
index c9ed14f6c67d..000000000000
--- a/arch/frv/mm/pgalloc.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/* pgalloc.c: page directory & page table allocation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sched.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/quicklist.h>
-#include <asm/pgalloc.h>
-#include <asm/page.h>
-#include <asm/cacheflush.h>
-
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((aligned(PAGE_SIZE)));
-
-pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
- pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL);
- if (pte)
- clear_page(pte);
- return pte;
-}
-
-pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- struct page *page;
-
-#ifdef CONFIG_HIGHPTE
- page = alloc_pages(GFP_KERNEL|__GFP_HIGHMEM, 0);
-#else
- page = alloc_pages(GFP_KERNEL, 0);
-#endif
- if (!page)
- return NULL;
-
- clear_highpage(page);
- if (!pgtable_page_ctor(page)) {
- __free_page(page);
- return NULL;
- }
- flush_dcache_page(page);
- return page;
-}
-
-void __set_pmd(pmd_t *pmdptr, unsigned long pmd)
-{
- unsigned long *__ste_p = pmdptr->ste;
- int loop;
-
- if (!pmd) {
- memset(__ste_p, 0, PME_SIZE);
- }
- else {
- BUG_ON(pmd & (0x3f00 | xAMPRx_SS | 0xe));
-
- for (loop = PME_SIZE; loop > 0; loop -= 4) {
- *__ste_p++ = pmd;
- pmd += __frv_PT_SIZE;
- }
- }
-
- frv_dcache_writeback((unsigned long) pmdptr, (unsigned long) (pmdptr + 1));
-}
-
-/*
- * List of all pgd's needed for non-PAE so it can invalidate entries
- * in both cached and uncached pgd's; not needed for PAE since the
- * kernel pmd is shared. If PAE were not to share the pmd a similar
- * tactic would be needed. This is essentially codepath-based locking
- * against pageattr.c; it is the unique case in which a valid change
- * of kernel pagetables can't be lazily synchronized by vmalloc faults.
- * vmalloc faults work because attached pagetables are never freed.
- * If the locking proves to be non-performant, a ticketing scheme with
- * checks at dup_mmap(), exec(), and other mmlist addition points
- * could be used. The locking scheme was chosen on the basis of
- * manfred's recommendations and having no core impact whatsoever.
- * -- nyc
- */
-DEFINE_SPINLOCK(pgd_lock);
-struct page *pgd_list;
-
-static inline void pgd_list_add(pgd_t *pgd)
-{
- struct page *page = virt_to_page(pgd);
- page->index = (unsigned long) pgd_list;
- if (pgd_list)
- set_page_private(pgd_list, (unsigned long) &page->index);
- pgd_list = page;
- set_page_private(page, (unsigned long)&pgd_list);
-}
-
-static inline void pgd_list_del(pgd_t *pgd)
-{
- struct page *next, **pprev, *page = virt_to_page(pgd);
- next = (struct page *) page->index;
- pprev = (struct page **) page_private(page);
- *pprev = next;
- if (next)
- set_page_private(next, (unsigned long) pprev);
-}
-
-void pgd_ctor(void *pgd)
-{
- unsigned long flags;
-
- if (PTRS_PER_PMD == 1)
- spin_lock_irqsave(&pgd_lock, flags);
-
- memcpy((pgd_t *) pgd + USER_PGDS_IN_LAST_PML4,
- swapper_pg_dir + USER_PGDS_IN_LAST_PML4,
- (PTRS_PER_PGD - USER_PGDS_IN_LAST_PML4) * sizeof(pgd_t));
-
- if (PTRS_PER_PMD > 1)
- return;
-
- pgd_list_add(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
- memset(pgd, 0, USER_PGDS_IN_LAST_PML4 * sizeof(pgd_t));
-}
-
-/* never called when PTRS_PER_PMD > 1 */
-void pgd_dtor(void *pgd)
-{
- unsigned long flags; /* can be called from interrupt context */
-
- spin_lock_irqsave(&pgd_lock, flags);
- pgd_list_del(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
-}
-
-pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- return quicklist_alloc(0, GFP_KERNEL, pgd_ctor);
-}
-
-void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
- /* in the non-PAE case, clear_page_tables() clears user pgd entries */
- quicklist_free(0, pgd_dtor, pgd);
-}
-
-void __init pgtable_cache_init(void)
-{
-}
-
-void check_pgt_cache(void)
-{
- quicklist_trim(0, pgd_dtor, 25, 16);
-}
-