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s390/mm: uninline pmdp_xxx functions from pgtable.h

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The pmdp_xxx function are smaller than their ptep_xxx counterparts
but to keep things symmetrical unline them as well.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2016-03-08 11:09:25 +01:00
parent ebde765c0e
commit 227be799c3
3 changed files with 126 additions and 114 deletions
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140
arch/s390/include/asm/pgtable.h
View File

@ -520,15 +520,6 @@ static inline int pmd_bad(pmd_t pmd)
return (pmd_val(pmd) & ~_SEGMENT_ENTRY_BITS) != 0;
}
#define __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
extern int pmdp_set_access_flags(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp,
pmd_t entry, int dirty);
#define __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
extern int pmdp_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#define __HAVE_ARCH_PMD_WRITE
static inline int pmd_write(pmd_t pmd)
{
@ -1203,54 +1194,51 @@ static inline void __pmdp_idte_local(unsigned long address, pmd_t *pmdp)
: "cc" );
}
static inline void pmdp_flush_direct(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
{
int active, count;
if (pmd_val(*pmdp) & _SEGMENT_ENTRY_INVALID)
return;
if (!MACHINE_HAS_IDTE) {
__pmdp_csp(pmdp);
return;
}
active = (mm == current->active_mm) ? 1 : 0;
count = atomic_add_return(0x10000, &mm->context.attach_count);
if (MACHINE_HAS_TLB_LC && (count & 0xffff) <= active &&
cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id())))
__pmdp_idte_local(address, pmdp);
else
__pmdp_idte(address, pmdp);
atomic_sub(0x10000, &mm->context.attach_count);
}
static inline void pmdp_flush_lazy(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
{
int active, count;
if (pmd_val(*pmdp) & _SEGMENT_ENTRY_INVALID)
return;
active = (mm == current->active_mm) ? 1 : 0;
count = atomic_add_return(0x10000, &mm->context.attach_count);
if ((count & 0xffff) <= active) {
pmd_val(*pmdp) |= _SEGMENT_ENTRY_INVALID;
mm->context.flush_mm = 1;
} else if (MACHINE_HAS_IDTE)
__pmdp_idte(address, pmdp);
else
__pmdp_csp(pmdp);
atomic_sub(0x10000, &mm->context.attach_count);
}
pmd_t pmdp_xchg_direct(struct mm_struct *, unsigned long, pmd_t *, pmd_t);
pmd_t pmdp_xchg_lazy(struct mm_struct *, unsigned long, pmd_t *, pmd_t);
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define __HAVE_ARCH_PGTABLE_DEPOSIT
extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable);
void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable);
#define __HAVE_ARCH_PGTABLE_WITHDRAW
extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
static inline int pmdp_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmdp,
pmd_t entry, int dirty)
{
VM_BUG_ON(addr & ~HPAGE_MASK);
entry = pmd_mkyoung(entry);
if (dirty)
entry = pmd_mkdirty(entry);
if (pmd_val(*pmdp) == pmd_val(entry))
return 0;
pmdp_xchg_direct(vma->vm_mm, addr, pmdp, entry);
return 1;
}
#define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmdp)
{
pmd_t pmd = *pmdp;
pmd = pmdp_xchg_direct(vma->vm_mm, addr, pmdp, pmd_mkold(pmd));
return pmd_young(pmd);
}
#define __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
static inline int pmdp_clear_flush_young(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmdp)
{
VM_BUG_ON(addr & ~HPAGE_MASK);
return pmdp_test_and_clear_young(vma, addr, pmdp);
}
static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t entry)
@ -1266,66 +1254,48 @@ static inline pmd_t pmd_mkhuge(pmd_t pmd)
return pmd;
}
#define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
{
pmd_t pmd;
pmd = *pmdp;
pmdp_flush_direct(vma->vm_mm, address, pmdp);
*pmdp = pmd_mkold(pmd);
return pmd_young(pmd);
}
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
unsigned long addr, pmd_t *pmdp)
{
pmd_t pmd = *pmdp;
pmdp_flush_direct(mm, address, pmdp);
pmd_clear(pmdp);
return pmd;
return pmdp_xchg_direct(mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_INVALID));
}
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL
static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
unsigned long address,
unsigned long addr,
pmd_t *pmdp, int full)
{
pmd_t pmd = *pmdp;
if (!full)
pmdp_flush_lazy(mm, address, pmdp);
pmd_clear(pmdp);
return pmd;
if (full) {
pmd_t pmd = *pmdp;
*pmdp = __pmd(_SEGMENT_ENTRY_INVALID);
return pmd;
}
return pmdp_xchg_lazy(mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_INVALID));
}
#define __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH
static inline pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
unsigned long addr, pmd_t *pmdp)
{
return pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
return pmdp_huge_get_and_clear(vma->vm_mm, addr, pmdp);
}
#define __HAVE_ARCH_PMDP_INVALIDATE
static inline void pmdp_invalidate(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
unsigned long addr, pmd_t *pmdp)
{
pmdp_flush_direct(vma->vm_mm, address, pmdp);
pmdp_xchg_direct(vma->vm_mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_INVALID));
}
#define __HAVE_ARCH_PMDP_SET_WRPROTECT
static inline void pmdp_set_wrprotect(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
unsigned long addr, pmd_t *pmdp)
{
pmd_t pmd = *pmdp;
if (pmd_write(pmd)) {
pmdp_flush_direct(mm, address, pmdp);
set_pmd_at(mm, address, pmdp, pmd_wrprotect(pmd));
}
if (pmd_write(pmd))
pmd = pmdp_xchg_lazy(mm, addr, pmdp, pmd_wrprotect(pmd));
}
static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,

7
arch/s390/mm/hugetlbpage.c
View File

@ -105,11 +105,10 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
pmd_t *pmdp = (pmd_t *) ptep;
pte_t pte = huge_ptep_get(ptep);
pmd_t old;
pmdp_flush_direct(mm, addr, pmdp);
pmd_val(*pmdp) = _SEGMENT_ENTRY_EMPTY;
return pte;
old = pmdp_xchg_direct(mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_EMPTY));
return __pmd_to_pte(old);
}
pte_t *huge_pte_alloc(struct mm_struct *mm,

93
arch/s390/mm/pgtable.c
View File

@ -1418,6 +1418,74 @@ void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
}
EXPORT_SYMBOL(ptep_modify_prot_commit);
static inline pmd_t pmdp_flush_direct(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp)
{
int active, count;
pmd_t old;
old = *pmdp;
if (pmd_val(old) & _SEGMENT_ENTRY_INVALID)
return old;
if (!MACHINE_HAS_IDTE) {
__pmdp_csp(pmdp);
return old;
}
active = (mm == current->active_mm) ? 1 : 0;
count = atomic_add_return(0x10000, &mm->context.attach_count);
if (MACHINE_HAS_TLB_LC && (count & 0xffff) <= active &&
cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id())))
__pmdp_idte_local(addr, pmdp);
else
__pmdp_idte(addr, pmdp);
atomic_sub(0x10000, &mm->context.attach_count);
return old;
}
static inline pmd_t pmdp_flush_lazy(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp)
{
int active, count;
pmd_t old;
old = *pmdp;
if (pmd_val(old) & _SEGMENT_ENTRY_INVALID)
return old;
active = (mm == current->active_mm) ? 1 : 0;
count = atomic_add_return(0x10000, &mm->context.attach_count);
if ((count & 0xffff) <= active) {
pmd_val(*pmdp) |= _SEGMENT_ENTRY_INVALID;
mm->context.flush_mm = 1;
} else if (MACHINE_HAS_IDTE)
__pmdp_idte(addr, pmdp);
else
__pmdp_csp(pmdp);
atomic_sub(0x10000, &mm->context.attach_count);
return old;
}
pmd_t pmdp_xchg_direct(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t new)
{
pmd_t old;
old = pmdp_flush_direct(mm, addr, pmdp);
*pmdp = new;
return old;
}
EXPORT_SYMBOL(pmdp_xchg_direct);
pmd_t pmdp_xchg_lazy(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t new)
{
pmd_t old;
old = pmdp_flush_lazy(mm, addr, pmdp);
*pmdp = new;
return old;
}
EXPORT_SYMBOL(pmdp_xchg_lazy);
/*
* switch on pgstes for its userspace process (for kvm)
*/
@ -1525,31 +1593,6 @@ void s390_reset_cmma(struct mm_struct *mm)
EXPORT_SYMBOL_GPL(s390_reset_cmma);
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
int pmdp_clear_flush_young(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
/* No need to flush TLB
* On s390 reference bits are in storage key and never in TLB */
return pmdp_test_and_clear_young(vma, address, pmdp);
}
int pmdp_set_access_flags(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp,
pmd_t entry, int dirty)
{
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
entry = pmd_mkyoung(entry);
if (dirty)
entry = pmd_mkdirty(entry);
if (pmd_same(*pmdp, entry))
return 0;
pmdp_invalidate(vma, address, pmdp);
set_pmd_at(vma->vm_mm, address, pmdp, entry);
return 1;
}
void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable)
{