Commit 8d645041 authored by Richard Henderson's avatar Richard Henderson Committed by Richard Henderson

Update Alpha for Ingo's page tables in highmem patch.

parent 9e3e7ba3
......@@ -455,7 +455,7 @@ irongate_remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
if (address >= end)
BUG();
do {
pte_t * pte = pte_alloc(&init_mm, pmd, address);
pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
if (!pte)
return -ENOMEM;
irongate_remap_area_pte(pte, address, end - address,
......
......@@ -64,7 +64,6 @@ cpu_idle(void)
while (!need_resched())
barrier();
schedule();
check_pgt_cache();
}
}
......
......@@ -42,12 +42,8 @@ extern void die_if_kernel(char *,struct pt_regs *,long);
static struct pcb_struct original_pcb;
#ifndef CONFIG_SMP
struct pgtable_cache_struct quicklists;
#endif
pgd_t *
get_pgd_slow(void)
pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret, *init;
......@@ -69,28 +65,26 @@ get_pgd_slow(void)
return ret;
}
int do_check_pgt_cache(int low, int high)
pte_t *
pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
int freed = 0;
if(pgtable_cache_size > high) {
do {
if(pgd_quicklist) {
free_pgd_slow(get_pgd_fast());
freed++;
}
if(pmd_quicklist) {
pmd_free_slow(pmd_alloc_one_fast(NULL, 0));
freed++;
}
if(pte_quicklist) {
pte_free_slow(pte_alloc_one_fast(NULL, 0));
freed++;
}
} while(pgtable_cache_size > low);
pte_t *pte;
long timeout = 10;
retry:
pte = (pte_t *) __get_free_page(GFP_KERNEL);
if (pte)
clear_page(pte);
else if (--timeout >= 0) {
current->state = TASK_UNINTERRUPTIBLE;
schedule_timeout(HZ);
goto retry;
}
return freed;
return pte;
}
/*
* BAD_PAGE is the page that is used for page faults when linux
* is out-of-memory. Older versions of linux just did a
......@@ -145,7 +139,6 @@ show_mem(void)
printk("%ld reserved pages\n",reserved);
printk("%ld pages shared\n",shared);
printk("%ld pages swap cached\n",cached);
printk("%ld pages in page table cache\n",pgtable_cache_size);
show_buffers();
}
#endif
......@@ -260,7 +253,7 @@ callback_init(void * kernel_end)
unsigned long paddr = crb->map[i].pa;
crb->map[i].va = vaddr;
for (j = 0; j < crb->map[i].count; ++j) {
set_pte(pte_offset(pmd, vaddr),
set_pte(pte_offset_kernel(pmd, vaddr),
mk_pte_phys(paddr, PAGE_KERNEL));
paddr += PAGE_SIZE;
vaddr += PAGE_SIZE;
......
......@@ -230,53 +230,35 @@ extern void flush_tlb_range(struct vm_area_struct *, unsigned long, unsigned lon
* used to allocate a kernel page table - this turns on ASN bits
* if any.
*/
#ifndef CONFIG_SMP
extern struct pgtable_cache_struct {
unsigned long *pgd_cache;
unsigned long *pmd_cache;
unsigned long *pte_cache;
unsigned long pgtable_cache_sz;
} quicklists;
#else
#include <asm/smp.h>
#define quicklists cpu_data[smp_processor_id()]
#endif
#define pgd_quicklist (quicklists.pgd_cache)
#define pmd_quicklist (quicklists.pmd_cache)
#define pte_quicklist (quicklists.pte_cache)
#define pgtable_cache_size (quicklists.pgtable_cache_sz)
#define pmd_populate(mm, pmd, pte) pmd_set(pmd, pte)
#define pgd_populate(mm, pgd, pmd) pgd_set(pgd, pmd)
extern pgd_t *get_pgd_slow(void);
static inline void
pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
{
pmd_set(pmd, (pte_t *)((pte - mem_map) << PAGE_SHIFT));
}
static inline pgd_t *get_pgd_fast(void)
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
{
unsigned long *ret;
if ((ret = pgd_quicklist) != NULL) {
pgd_quicklist = (unsigned long *)(*ret);
ret[0] = 0;
pgtable_cache_size--;
} else
ret = (unsigned long *)get_pgd_slow();
return (pgd_t *)ret;
pmd_set(pmd, pte);
}
static inline void free_pgd_fast(pgd_t *pgd)
static inline void
pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
{
*(unsigned long *)pgd = (unsigned long) pgd_quicklist;
pgd_quicklist = (unsigned long *) pgd;
pgtable_cache_size++;
pgd_set(pgd, pmd);
}
static inline void free_pgd_slow(pgd_t *pgd)
extern pgd_t *pgd_alloc(struct mm_struct *mm);
static inline void
pgd_free(pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
static inline pmd_t *
pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL);
if (ret)
......@@ -284,67 +266,30 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
return ret;
}
static inline pmd_t *pmd_alloc_one_fast(struct mm_struct *mm, unsigned long address)
{
unsigned long *ret;
if ((ret = (unsigned long *)pte_quicklist) != NULL) {
pte_quicklist = (unsigned long *)(*ret);
ret[0] = 0;
pgtable_cache_size--;
}
return (pmd_t *)ret;
}
static inline void pmd_free_fast(pmd_t *pmd)
{
*(unsigned long *)pmd = (unsigned long) pte_quicklist;
pte_quicklist = (unsigned long *) pmd;
pgtable_cache_size++;
}
static inline void pmd_free_slow(pmd_t *pmd)
static inline void
pmd_free(pmd_t *pmd)
{
free_page((unsigned long)pmd);
}
static inline pte_t *pte_alloc_one(struct mm_struct *mm, unsigned long address)
{
pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL);
if (pte)
clear_page(pte);
return pte;
}
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
static inline pte_t *pte_alloc_one_fast(struct mm_struct *mm, unsigned long address)
static inline void
pte_free_kernel(pte_t *pte)
{
unsigned long *ret;
if ((ret = (unsigned long *)pte_quicklist) != NULL) {
pte_quicklist = (unsigned long *)(*ret);
ret[0] = 0;
pgtable_cache_size--;
}
return (pte_t *)ret;
free_page((unsigned long)pte);
}
static inline void pte_free_fast(pte_t *pte)
static inline struct page *
pte_alloc_one(struct mm_struct *mm, unsigned long addr)
{
*(unsigned long *)pte = (unsigned long) pte_quicklist;
pte_quicklist = (unsigned long *) pte;
pgtable_cache_size++;
return virt_to_page(pte_alloc_one_kernel(mm, addr));
}
static inline void pte_free_slow(pte_t *pte)
static inline void
pte_free(struct page *page)
{
free_page((unsigned long)pte);
__free_page(page);
}
#define pte_free(pte) pte_free_fast(pte)
#define pmd_free(pmd) pmd_free_fast(pmd)
#define pgd_free(pgd) free_pgd_fast(pgd)
#define pgd_alloc(mm) get_pgd_fast()
extern int do_check_pgt_cache(int, int);
#endif /* _ALPHA_PGALLOC_H */
......@@ -248,8 +248,13 @@ extern inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
})
#endif
extern inline unsigned long pmd_page(pmd_t pmd)
{ return PAGE_OFFSET + ((pmd_val(pmd) & _PFN_MASK) >> (32-PAGE_SHIFT)); }
extern inline unsigned long
pmd_page_kernel(pmd_t pmd)
{
return ((pmd_val(pmd) & _PFN_MASK) >> (32-PAGE_SHIFT)) + PAGE_OFFSET;
}
#define pmd_page(pmd) (mem_map + ((pmd_val(pmd) & _PFN_MASK) >> 32))
extern inline unsigned long pgd_page(pgd_t pgd)
{ return PAGE_OFFSET + ((pgd_val(pgd) & _PFN_MASK) >> (32-PAGE_SHIFT)); }
......@@ -306,11 +311,17 @@ extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
}
/* Find an entry in the third-level page table.. */
extern inline pte_t * pte_offset(pmd_t * dir, unsigned long address)
extern inline pte_t * pte_offset_kernel(pmd_t * dir, unsigned long address)
{
return (pte_t *) pmd_page(*dir) + ((address >> PAGE_SHIFT) & (PTRS_PER_PAGE - 1));
return (pte_t *) pmd_page_kernel(*dir)
+ ((address >> PAGE_SHIFT) & (PTRS_PER_PAGE - 1));
}
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
extern pgd_t swapper_pg_dir[1024];
/*
......
......@@ -29,10 +29,6 @@ struct cpuinfo_alpha {
unsigned long last_asn;
int need_new_asn;
int asn_lock;
unsigned long *pgd_cache;
unsigned long *pmd_cache;
unsigned long *pte_cache;
unsigned long pgtable_cache_sz;
unsigned long ipi_count;
unsigned long irq_attempt[NR_IRQS];
unsigned long prof_multiplier;
......
......@@ -137,6 +137,7 @@ do { \
check_mmu_context(); \
} while (0)
struct task_struct;
extern void alpha_switch_to(unsigned long, struct task_struct*);
#define mb() \
......
......@@ -4,6 +4,7 @@
#include <linux/config.h>
#include <linux/bio.h>
#include <linux/fs.h>
#include <asm/pgalloc.h>
#ifdef CONFIG_HIGHMEM
......
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