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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-02-05 15:37:22 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-02-23 08:56:19 +0100 |
| commit | 3c2c126a675bd8a95d5ed186fe9cd788f438bff1 (patch) | |
| tree | 792cd100f51591310cfe15439bbe029179e5e8e0 /arch/s390/include/asm/pgtable.h | |
| parent | 9bfefde718c1352d9499125bce50b2a0e8a3db4c (diff) | |
| download | linux-0-day-3c2c126a675bd8a95d5ed186fe9cd788f438bff1.tar.gz linux-0-day-3c2c126a675bd8a95d5ed186fe9cd788f438bff1.tar.xz | |
s390/mm: remove unnecessary indirection with pgste_update_all
The first parameter of pgste_update_all is a pointer to a pte.
Simplify the code by passing the pte value.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 64ead80912488..21e95cdcf8f62 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -680,15 +680,15 @@ static inline void pgste_set(pte_t *ptep, pgste_t pgste) #endif } -static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste, +static inline pgste_t pgste_update_all(pte_t pte, pgste_t pgste, struct mm_struct *mm) { #ifdef CONFIG_PGSTE unsigned long address, bits, skey; - if (!mm_use_skey(mm) || pte_val(*ptep) & _PAGE_INVALID) + if (!mm_use_skey(mm) || pte_val(pte) & _PAGE_INVALID) return pgste; - address = pte_val(*ptep) & PAGE_MASK; + address = pte_val(pte) & PAGE_MASK; skey = (unsigned long) page_get_storage_key(address); bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED); /* Transfer page changed & referenced bit to guest bits in pgste */ @@ -1067,7 +1067,7 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { pgste_t pgste; - pte_t pte, oldpte; + pte_t pte; int young; if (mm_has_pgste(vma->vm_mm)) { @@ -1075,17 +1075,16 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, pgste = pgste_ipte_notify(vma->vm_mm, addr, ptep, pgste); } - oldpte = pte = *ptep; + pte = *ptep; ptep_flush_direct(vma->vm_mm, addr, ptep); young = pte_young(pte); - pte = pte_mkold(pte); if (mm_has_pgste(vma->vm_mm)) { - pgste = pgste_update_all(&oldpte, pgste, vma->vm_mm); - pgste = pgste_set_pte(ptep, pgste, pte); + pgste = pgste_update_all(pte, pgste, vma->vm_mm); + pgste = pgste_set_pte(ptep, pgste, pte_mkold(pte)); pgste_set_unlock(ptep, pgste); } else - *ptep = pte; + *ptep = pte_mkold(pte); return young; } @@ -1127,7 +1126,7 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, pte_val(*ptep) = _PAGE_INVALID; if (mm_has_pgste(mm)) { - pgste = pgste_update_all(&pte, pgste, mm); + pgste = pgste_update_all(pte, pgste, mm); pgste_set_unlock(ptep, pgste); } return pte; @@ -1150,7 +1149,7 @@ static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, ptep_flush_lazy(mm, address, ptep); if (mm_has_pgste(mm)) { - pgste = pgste_update_all(&pte, pgste, mm); + pgste = pgste_update_all(pte, pgste, mm); pgste_set(ptep, pgste); } return pte; @@ -1191,7 +1190,7 @@ static inline pte_t ptep_clear_flush(struct vm_area_struct *vma, if ((pgste_val(pgste) & _PGSTE_GPS_USAGE_MASK) == _PGSTE_GPS_USAGE_UNUSED) pte_val(pte) |= _PAGE_UNUSED; - pgste = pgste_update_all(&pte, pgste, vma->vm_mm); + pgste = pgste_update_all(pte, pgste, vma->vm_mm); pgste_set_unlock(ptep, pgste); } return pte; @@ -1223,7 +1222,7 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, pte_val(*ptep) = _PAGE_INVALID; if (!full && mm_has_pgste(mm)) { - pgste = pgste_update_all(&pte, pgste, mm); + pgste = pgste_update_all(pte, pgste, mm); pgste_set_unlock(ptep, pgste); } return pte; |