mirror of
https://github.com/Qortal/Brooklyn.git
synced 2025-02-15 19:55:53 +00:00
a94b3d14aa
Changes included (and more): 1. Dynamic RAM merge 2. Real-time page scan and allocation 3. Cache compression 4. Real-time IRQ checks 5. Dynamic I/O allocation for Java heap 6. Java page migration 7. Contiguous memory allocation 8. Idle pages tracking 9. Per CPU RAM usage tracking 10. ARM NEON scalar multiplication library 11. NEON/ARMv8 crypto extensions 12. NEON SHA, Blake, RIPEMD crypto extensions 13. Parallel NEON crypto engine for multi-algo based CPU stress reduction
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* IBM System z Huge TLB Page Support for Kernel.
|
|
*
|
|
* Copyright IBM Corp. 2008
|
|
* Author(s): Gerald Schaefer <gerald.schaefer@de.ibm.com>
|
|
*/
|
|
|
|
#ifndef _ASM_S390_HUGETLB_H
|
|
#define _ASM_S390_HUGETLB_H
|
|
|
|
#include <linux/pgtable.h>
|
|
#include <asm/page.h>
|
|
|
|
#define hugetlb_free_pgd_range free_pgd_range
|
|
#define hugepages_supported() (MACHINE_HAS_EDAT1)
|
|
|
|
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
|
|
pte_t *ptep, pte_t pte);
|
|
pte_t huge_ptep_get(pte_t *ptep);
|
|
pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
|
|
unsigned long addr, pte_t *ptep);
|
|
|
|
/*
|
|
* If the arch doesn't supply something else, assume that hugepage
|
|
* size aligned regions are ok without further preparation.
|
|
*/
|
|
static inline int prepare_hugepage_range(struct file *file,
|
|
unsigned long addr, unsigned long len)
|
|
{
|
|
if (len & ~HPAGE_MASK)
|
|
return -EINVAL;
|
|
if (addr & ~HPAGE_MASK)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static inline void arch_clear_hugepage_flags(struct page *page)
|
|
{
|
|
clear_bit(PG_arch_1, &page->flags);
|
|
}
|
|
#define arch_clear_hugepage_flags arch_clear_hugepage_flags
|
|
|
|
static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
|
|
pte_t *ptep, unsigned long sz)
|
|
{
|
|
if ((pte_val(*ptep) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3)
|
|
set_pte(ptep, __pte(_REGION3_ENTRY_EMPTY));
|
|
else
|
|
set_pte(ptep, __pte(_SEGMENT_ENTRY_EMPTY));
|
|
}
|
|
|
|
static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
|
|
unsigned long address, pte_t *ptep)
|
|
{
|
|
huge_ptep_get_and_clear(vma->vm_mm, address, ptep);
|
|
}
|
|
|
|
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
|
|
unsigned long addr, pte_t *ptep,
|
|
pte_t pte, int dirty)
|
|
{
|
|
int changed = !pte_same(huge_ptep_get(ptep), pte);
|
|
if (changed) {
|
|
huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
|
|
set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
|
|
unsigned long addr, pte_t *ptep)
|
|
{
|
|
pte_t pte = huge_ptep_get_and_clear(mm, addr, ptep);
|
|
set_huge_pte_at(mm, addr, ptep, pte_wrprotect(pte));
|
|
}
|
|
|
|
static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
|
|
{
|
|
return mk_pte(page, pgprot);
|
|
}
|
|
|
|
static inline int huge_pte_none(pte_t pte)
|
|
{
|
|
return pte_none(pte);
|
|
}
|
|
|
|
static inline int huge_pte_write(pte_t pte)
|
|
{
|
|
return pte_write(pte);
|
|
}
|
|
|
|
static inline int huge_pte_dirty(pte_t pte)
|
|
{
|
|
return pte_dirty(pte);
|
|
}
|
|
|
|
static inline pte_t huge_pte_mkwrite(pte_t pte)
|
|
{
|
|
return pte_mkwrite(pte);
|
|
}
|
|
|
|
static inline pte_t huge_pte_mkdirty(pte_t pte)
|
|
{
|
|
return pte_mkdirty(pte);
|
|
}
|
|
|
|
static inline pte_t huge_pte_wrprotect(pte_t pte)
|
|
{
|
|
return pte_wrprotect(pte);
|
|
}
|
|
|
|
static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
|
|
{
|
|
return pte_modify(pte, newprot);
|
|
}
|
|
|
|
static inline bool gigantic_page_runtime_supported(void)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
#endif /* _ASM_S390_HUGETLB_H */
|