Release 4.7 arch/s390/include/asm/pgalloc.h
/*
* S390 version
* Copyright IBM Corp. 1999, 2000
* Author(s): Hartmut Penner (hp@de.ibm.com)
* Martin Schwidefsky (schwidefsky@de.ibm.com)
*
* Derived from "include/asm-i386/pgalloc.h"
* Copyright (C) 1994 Linus Torvalds
*/
#ifndef _S390_PGALLOC_H
#define _S390_PGALLOC_H
#include <linux/threads.h>
#include <linux/gfp.h>
#include <linux/mm.h>
unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *);
unsigned long *page_table_alloc(struct mm_struct *);
void page_table_free(struct mm_struct *, unsigned long *);
void page_table_free_rcu(struct mmu_gather *, unsigned long *, unsigned long);
extern int page_table_allocate_pgste;
static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{
typedef struct { char _[n]; } addrtype;
*s = val;
n = (n / 256) - 1;
asm volatile(
" mvc 8(248,%0),0(%0)\n"
"0: mvc 256(256,%0),0(%0)\n"
" la %0,256(%0)\n"
" brct %1,0b\n"
: "+a" (s), "+d" (n), "=m" (*(addrtype *) s)
: "m" (*(addrtype *) s));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 39 | 79.59% | 2 | 40.00% |
| gerald schaefer | gerald schaefer | 7 | 14.29% | 1 | 20.00% |
| pre-git | pre-git | 2 | 4.08% | 1 | 20.00% |
| heiko carstens | heiko carstens | 1 | 2.04% | 1 | 20.00% |
| Total | 49 | 100.00% | 5 | 100.00% |
static inline void crst_table_init(unsigned long *crst, unsigned long entry)
{
clear_table(crst, entry, sizeof(unsigned long)*2048);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 20 | 64.52% | 2 | 50.00% |
| pre-git | pre-git | 6 | 19.35% | 1 | 25.00% |
| gerald schaefer | gerald schaefer | 5 | 16.13% | 1 | 25.00% |
| Total | 31 | 100.00% | 4 | 100.00% |
static inline unsigned long pgd_entry_type(struct mm_struct *mm)
{
if (mm->context.asce_limit <= (1UL << 31))
return _SEGMENT_ENTRY_EMPTY;
if (mm->context.asce_limit <= (1UL << 42))
return _REGION3_ENTRY_EMPTY;
return _REGION2_ENTRY_EMPTY;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 50 | 100.00% | 3 | 100.00% |
| Total | 50 | 100.00% | 3 | 100.00% |
int crst_table_upgrade(struct mm_struct *);
void crst_table_downgrade(struct mm_struct *);
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
{
unsigned long *table = crst_table_alloc(mm);
if (table)
crst_table_init(table, _REGION3_ENTRY_EMPTY);
return (pud_t *) table;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 45 | 100.00% | 2 | 100.00% |
| Total | 45 | 100.00% | 2 | 100.00% |
#define pud_free(mm, pud) crst_table_free(mm, (unsigned long *) pud)
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
unsigned long *table = crst_table_alloc(mm);
if (!table)
return NULL;
crst_table_init(table, _SEGMENT_ENTRY_EMPTY);
if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
crst_table_free(mm, table);
return NULL;
}
return (pmd_t *) table;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 58 | 80.56% | 4 | 66.67% |
| gerald schaefer | gerald schaefer | 14 | 19.44% | 2 | 33.33% |
| Total | 72 | 100.00% | 6 | 100.00% |
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
pgtable_pmd_page_dtor(virt_to_page(pmd));
crst_table_free(mm, (unsigned long *) pmd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 34 | 94.44% | 2 | 66.67% |
| benjamin herrenschmidt | benjamin herrenschmidt | 2 | 5.56% | 1 | 33.33% |
| Total | 36 | 100.00% | 3 | 100.00% |
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 33 | 100.00% | 3 | 100.00% |
| Total | 33 | 100.00% | 3 | 100.00% |
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{
pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 33 | 100.00% | 4 | 100.00% |
| Total | 33 | 100.00% | 4 | 100.00% |
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
unsigned long *table = crst_table_alloc(mm);
if (!table)
return NULL;
if (mm->context.asce_limit == (1UL << 31)) {
/* Forking a compat process with 2 page table levels */
if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
crst_table_free(mm, table);
return NULL;
}
}
return (pgd_t *) table;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 77 | 98.72% | 6 | 85.71% |
| gerald schaefer | gerald schaefer | 1 | 1.28% | 1 | 14.29% |
| Total | 78 | 100.00% | 7 | 100.00% |
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
if (mm->context.asce_limit == (1UL << 31))
pgtable_pmd_page_dtor(virt_to_page(pgd));
crst_table_free(mm, (unsigned long *) pgd);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 48 | 96.00% | 2 | 66.67% |
| benjamin herrenschmidt | benjamin herrenschmidt | 2 | 4.00% | 1 | 33.33% |
| Total | 50 | 100.00% | 3 | 100.00% |
static inline void pmd_populate(struct mm_struct *mm,
pmd_t *pmd, pgtable_t pte)
{
pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 16 | 50.00% | 4 | 57.14% |
| linus torvalds | linus torvalds | 12 | 37.50% | 2 | 28.57% |
| pre-git | pre-git | 4 | 12.50% | 1 | 14.29% |
| Total | 32 | 100.00% | 7 | 100.00% |
#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte)
#define pmd_pgtable(pmd) \
(pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE)
/*
* page table entry allocation/free routines.
*/
#define pte_alloc_one_kernel(mm, vmaddr) ((pte_t *) page_table_alloc(mm))
#define pte_alloc_one(mm, vmaddr) ((pte_t *) page_table_alloc(mm))
#define pte_free_kernel(mm, pte) page_table_free(mm, (unsigned long *) pte)
#define pte_free(mm, pte) page_table_free(mm, (unsigned long *) pte)
extern void rcu_table_freelist_finish(void);
#endif /* _S390_PGALLOC_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| martin schwidefsky | martin schwidefsky | 583 | 85.86% | 20 | 71.43% |
| pre-git | pre-git | 35 | 5.15% | 1 | 3.57% |
| gerald schaefer | gerald schaefer | 28 | 4.12% | 2 | 7.14% |
| linus torvalds | linus torvalds | 21 | 3.09% | 2 | 7.14% |
| benjamin herrenschmidt | benjamin herrenschmidt | 10 | 1.47% | 1 | 3.57% |
| heiko carstens | heiko carstens | 2 | 0.29% | 2 | 7.14% |
| Total | 679 | 100.00% | 28 | 100.00% |
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