404

[ Avaa Bypassed ]




Upload:

Command:

botdev@3.137.202.126: ~ $
/*
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
 *   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, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 */

#ifndef _ASM_TILE_PGALLOC_H
#define _ASM_TILE_PGALLOC_H

#include <linux/threads.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
#include <asm/fixmap.h>
#include <asm/page.h>
#include <hv/hypervisor.h>

/* Bits for the size of the second-level page table. */
#define L2_KERNEL_PGTABLE_SHIFT _HV_LOG2_L2_SIZE(HPAGE_SHIFT, PAGE_SHIFT)

/* How big is a kernel L2 page table? */
#define L2_KERNEL_PGTABLE_SIZE (1UL << L2_KERNEL_PGTABLE_SHIFT)

/* We currently allocate user L2 page tables by page (unlike kernel L2s). */
#if L2_KERNEL_PGTABLE_SHIFT < PAGE_SHIFT
#define L2_USER_PGTABLE_SHIFT PAGE_SHIFT
#else
#define L2_USER_PGTABLE_SHIFT L2_KERNEL_PGTABLE_SHIFT
#endif

/* How many pages do we need, as an "order", for a user L2 page table? */
#define L2_USER_PGTABLE_ORDER (L2_USER_PGTABLE_SHIFT - PAGE_SHIFT)

static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
{
#ifdef CONFIG_64BIT
	set_pte(pmdp, pmd);
#else
	set_pte(&pmdp->pud.pgd, pmd.pud.pgd);
#endif
}

static inline void pmd_populate_kernel(struct mm_struct *mm,
				       pmd_t *pmd, pte_t *ptep)
{
	set_pmd(pmd, ptfn_pmd(HV_CPA_TO_PTFN(__pa(ptep)),
			      __pgprot(_PAGE_PRESENT)));
}

static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
				pgtable_t page)
{
	set_pmd(pmd, ptfn_pmd(HV_CPA_TO_PTFN(PFN_PHYS(page_to_pfn(page))),
			      __pgprot(_PAGE_PRESENT)));
}

/*
 * Allocate and free page tables.
 */

extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);

extern pgtable_t pgtable_alloc_one(struct mm_struct *mm, unsigned long address,
				   int order);
extern void pgtable_free(struct mm_struct *mm, struct page *pte, int order);

static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
				      unsigned long address)
{
	return pgtable_alloc_one(mm, address, L2_USER_PGTABLE_ORDER);
}

static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
	pgtable_free(mm, pte, L2_USER_PGTABLE_ORDER);
}

#define pmd_pgtable(pmd) pmd_page(pmd)

static inline pte_t *
pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
	return pfn_to_kaddr(page_to_pfn(pte_alloc_one(mm, address)));
}

static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
	BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
	pte_free(mm, virt_to_page(pte));
}

extern void __pgtable_free_tlb(struct mmu_gather *tlb, struct page *pte,
			       unsigned long address, int order);
static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte,
				  unsigned long address)
{
	__pgtable_free_tlb(tlb, pte, address, L2_USER_PGTABLE_ORDER);
}

#define check_pgt_cache()	do { } while (0)

/*
 * Get the small-page pte_t lowmem entry for a given pfn.
 * This may or may not be in use, depending on whether the initial
 * huge-page entry for the page has already been shattered.
 */
pte_t *get_prealloc_pte(unsigned long pfn);

/* During init, we can shatter kernel huge pages if needed. */
void shatter_pmd(pmd_t *pmd);

/* After init, a more complex technique is required. */
void shatter_huge_page(unsigned long addr);

#ifdef __tilegx__

#define pud_populate(mm, pud, pmd) \
  pmd_populate_kernel((mm), (pmd_t *)(pud), (pte_t *)(pmd))

/* Bits for the size of the L1 (intermediate) page table. */
#define L1_KERNEL_PGTABLE_SHIFT _HV_LOG2_L1_SIZE(HPAGE_SHIFT)

/* How big is a kernel L2 page table? */
#define L1_KERNEL_PGTABLE_SIZE (1UL << L1_KERNEL_PGTABLE_SHIFT)

/* We currently allocate L1 page tables by page. */
#if L1_KERNEL_PGTABLE_SHIFT < PAGE_SHIFT
#define L1_USER_PGTABLE_SHIFT PAGE_SHIFT
#else
#define L1_USER_PGTABLE_SHIFT L1_KERNEL_PGTABLE_SHIFT
#endif

/* How many pages do we need, as an "order", for an L1 page table? */
#define L1_USER_PGTABLE_ORDER (L1_USER_PGTABLE_SHIFT - PAGE_SHIFT)

static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
	struct page *p = pgtable_alloc_one(mm, address, L1_USER_PGTABLE_ORDER);
	return (pmd_t *)page_to_virt(p);
}

static inline void pmd_free(struct mm_struct *mm, pmd_t *pmdp)
{
	pgtable_free(mm, virt_to_page(pmdp), L1_USER_PGTABLE_ORDER);
}

static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
				  unsigned long address)
{
	__pgtable_free_tlb(tlb, virt_to_page(pmdp), address,
			   L1_USER_PGTABLE_ORDER);
}

#endif /* __tilegx__ */

#endif /* _ASM_TILE_PGALLOC_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 439 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 5.14 KB 0644
atomic_32.h File 8.91 KB 0644
atomic_64.h File 5.51 KB 0644
backtrace.h File 3.98 KB 0644
barrier.h File 2.89 KB 0644
bitops.h File 2.37 KB 0644
bitops_32.h File 4.01 KB 0644
bitops_64.h File 2.67 KB 0644
cache.h File 2.6 KB 0644
cacheflush.h File 4.94 KB 0644
checksum.h File 1.23 KB 0644
cmpxchg.h File 3.47 KB 0644
compat.h File 7.38 KB 0644
current.h File 947 B 0644
delay.h File 1.1 KB 0644
device.h File 978 B 0644
div64.h File 319 B 0644
dma-mapping.h File 1.82 KB 0644
dma.h File 762 B 0644
elf.h File 5.42 KB 0644
fixmap.h File 2.73 KB 0644
ftrace.h File 1.08 KB 0644
futex.h File 4.23 KB 0644
hardirq.h File 1.28 KB 0644
hardwall.h File 1.08 KB 0644
highmem.h File 2.08 KB 0644
homecache.h File 4.21 KB 0644
hugetlb.h File 3.04 KB 0644
hv_driver.h File 1.92 KB 0644
ide.h File 758 B 0644
insn.h File 1.79 KB 0644
io.h File 12.43 KB 0644
irq.h File 3.11 KB 0644
irq_work.h File 283 B 0644
irqflags.h File 10.55 KB 0644
jump_label.h File 1.47 KB 0644
kdebug.h File 769 B 0644
kexec.h File 2.23 KB 0644
kgdb.h File 1.99 KB 0644
kmap_types.h File 1.02 KB 0644
kprobes.h File 2.19 KB 0644
linkage.h File 1.46 KB 0644
mmu.h File 965 B 0644
mmu_context.h File 4.5 KB 0644
mmzone.h File 2.07 KB 0644
module.h File 1.12 KB 0644
page.h File 10.32 KB 0644
pci.h File 6.58 KB 0644
percpu.h File 1.79 KB 0644
perf_event.h File 766 B 0644
pgalloc.h File 4.76 KB 0644
pgtable.h File 15.66 KB 0644
pgtable_32.h File 4.08 KB 0644
pgtable_64.h File 5.11 KB 0644
pmc.h File 2.15 KB 0644
processor.h File 10.62 KB 0644
ptrace.h File 2.96 KB 0644
sections.h File 1.37 KB 0644
setup.h File 1.63 KB 0644
sigframe.h File 956 B 0644
signal.h File 1.07 KB 0644
smp.h File 3.98 KB 0644
spinlock.h File 741 B 0644
spinlock_32.h File 2.9 KB 0644
spinlock_64.h File 3.88 KB 0644
spinlock_types.h File 1.58 KB 0644
stack.h File 2.59 KB 0644
string.h File 1.19 KB 0644
switch_to.h File 2.75 KB 0644
syscall.h File 2.88 KB 0644
syscalls.h File 2.35 KB 0644
thread_info.h File 5.54 KB 0644
tile-desc.h File 650 B 0644
tile-desc_32.h File 12.54 KB 0644
tile-desc_64.h File 10.83 KB 0644
timex.h File 1.71 KB 0644
tlb.h File 878 B 0644
tlbflush.h File 3.99 KB 0644
topology.h File 1.52 KB 0644
traps.h File 2.44 KB 0644
uaccess.h File 12.77 KB 0644
unaligned.h File 1.56 KB 0644
unistd.h File 777 B 0644
user.h File 717 B 0644
vdso.h File 1.84 KB 0644
vga.h File 1.05 KB 0644
word-at-a-time.h File 1.07 KB 0644