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Diffstat (limited to 'old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h')
-rw-r--r--old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h188
1 files changed, 0 insertions, 188 deletions
diff --git a/old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h b/old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h
deleted file mode 100644
index 797da69bd7..0000000000
--- a/old/xenolinux-2.4.16-sparse/include/asm-xeno/pgalloc.h
+++ /dev/null
@@ -1,188 +0,0 @@
-#ifndef _I386_PGALLOC_H
-#define _I386_PGALLOC_H
-
-#include <linux/config.h>
-#include <asm/processor.h>
-#include <asm/hypervisor.h>
-#include <linux/threads.h>
-
-/*
- * Quick lists are aligned so that least significant bits of array pointer
- * are all zero when list is empty, and all one when list is full.
- */
-#define QUICKLIST_ENTRIES 256
-#define QUICKLIST_EMPTY(_l) !((unsigned long)(_l) & ((QUICKLIST_ENTRIES*4)-1))
-#define QUICKLIST_FULL(_l) QUICKLIST_EMPTY((_l)+1)
-#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)
-
-#define pmd_populate(mm, pmd, pte) \
- do { \
- set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))); \
- XENO_flush_page_update_queue(); \
- } while ( 0 )
-
-static __inline__ pgd_t *get_pgd_slow(void)
-{
- pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL);
- pgd_t *kpgd;
- pmd_t *kpmd;
- pte_t *kpte;
-
- if (pgd) {
- memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
- memcpy(pgd + USER_PTRS_PER_PGD,
- init_mm.pgd + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- kpgd = pgd_offset_k((unsigned long)pgd);
- kpmd = pmd_offset(kpgd, (unsigned long)pgd);
- kpte = pte_offset(kpmd, (unsigned long)pgd);
- queue_l1_entry_update(__pa(kpte), (*(unsigned long *)kpte)&~_PAGE_RW);
- queue_pgd_pin(__pa(pgd));
- }
-
- return pgd;
-}
-
-static __inline__ void free_pgd_slow(pgd_t *pgd)
-{
- pgd_t *kpgd;
- pmd_t *kpmd;
- pte_t *kpte;
- queue_pgd_unpin(__pa(pgd));
- kpgd = pgd_offset_k((unsigned long)pgd);
- kpmd = pmd_offset(kpgd, (unsigned long)pgd);
- kpte = pte_offset(kpmd, (unsigned long)pgd);
- queue_l1_entry_update(__pa(kpte), (*(unsigned long *)kpte)|_PAGE_RW);
- free_page((unsigned long)pgd);
-}
-
-static __inline__ pgd_t *get_pgd_fast(void)
-{
- unsigned long ret;
-
- if ( !QUICKLIST_EMPTY(pgd_quicklist) ) {
- ret = *(--pgd_quicklist);
- pgtable_cache_size--;
- } else
- ret = (unsigned long)get_pgd_slow();
- return (pgd_t *)ret;
-}
-
-static __inline__ void free_pgd_fast(pgd_t *pgd)
-{
- if ( !QUICKLIST_FULL(pgd_quicklist) ) {
- *(pgd_quicklist++) = (unsigned long)pgd;
- pgtable_cache_size++;
- } else
- free_pgd_slow(pgd);
-}
-
-static inline pte_t *pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- pte_t *pte;
- pgd_t *kpgd;
- pmd_t *kpmd;
- pte_t *kpte;
-
- pte = (pte_t *) __get_free_page(GFP_KERNEL);
- if (pte)
- {
- clear_page(pte);
- kpgd = pgd_offset_k((unsigned long)pte);
- kpmd = pmd_offset(kpgd, (unsigned long)pte);
- kpte = pte_offset(kpmd, (unsigned long)pte);
- queue_l1_entry_update(__pa(kpte), (*(unsigned long *)kpte)&~_PAGE_RW);
- queue_pte_pin(__pa(pte));
- }
- return pte;
-}
-
-static __inline__ void pte_free_slow(pte_t *pte)
-{
- pgd_t *kpgd;
- pmd_t *kpmd;
- pte_t *kpte;
- queue_pte_unpin(__pa(pte));
- kpgd = pgd_offset_k((unsigned long)pte);
- kpmd = pmd_offset(kpgd, (unsigned long)pte);
- kpte = pte_offset(kpmd, (unsigned long)pte);
- queue_l1_entry_update(__pa(kpte), (*(unsigned long *)kpte)|_PAGE_RW);
- free_page((unsigned long)pte);
-}
-
-static inline pte_t *pte_alloc_one_fast(struct mm_struct *mm, unsigned long address)
-{
- unsigned long ret = 0;
- if ( !QUICKLIST_EMPTY(pte_quicklist) ) {
- ret = *(--pte_quicklist);
- pgtable_cache_size--;
- }
- return (pte_t *)ret;
-}
-
-static __inline__ void pte_free_fast(pte_t *pte)
-{
- if ( !QUICKLIST_FULL(pte_quicklist) ) {
- *(pte_quicklist++) = (unsigned long)pte;
- pgtable_cache_size++;
- } else
- pte_free_slow(pte);
-}
-
-#define pte_free(pte) pte_free_fast(pte)
-#define pgd_alloc(mm) get_pgd_fast()
-#define pgd_free(pgd) free_pgd_fast(pgd)
-
-#define pmd_alloc_one_fast(mm, addr) ({ BUG(); ((pmd_t *)1); })
-#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
-#define pmd_free_slow(x) do { } while (0)
-#define pmd_free_fast(x) do { } while (0)
-#define pmd_free(x) do { } while (0)
-#define pgd_populate(mm, pmd, pte) BUG()
-
-extern int do_check_pgt_cache(int, int);
-
-/*
- * - flush_tlb() flushes the current mm struct TLBs
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(mm, start, end) flushes a range of pages
- * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
- */
-
-#define flush_tlb() __flush_tlb()
-#define flush_tlb_all() __flush_tlb_all()
-#define local_flush_tlb() __flush_tlb()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if ( mm == current->active_mm ) queue_tlb_flush();
- XENO_flush_page_update_queue();
-}
-
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- if ( vma->vm_mm == current->active_mm ) queue_invlpg(addr);
- XENO_flush_page_update_queue();
-}
-
-static inline void flush_tlb_range(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- if ( mm == current->active_mm ) queue_tlb_flush();
- XENO_flush_page_update_queue();
-}
-
-static inline void flush_tlb_pgtables(struct mm_struct *mm,
- unsigned long start, unsigned long end)
-{
- /* i386 does not keep any page table caches in TLB */
- XENO_flush_page_update_queue();
-}
-
-#endif /* _I386_PGALLOC_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 12:17:01 +0000