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* Make pmap_is_{modified,referenced}() macros in pmap.h that just 

test the attributes in the vm_page_md directly.
* Clean up pmap_clear_{modified,referenced}().
* Delete now-unused pmap_testbit().
This commit is contained in:
thorpej 2002-03-05 04:48:03 +00:00
parent a92da3d4a5
commit 5658662324
2 changed files with 48 additions and 61 deletions
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104
sys/arch/arm/arm32/pmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.49 2002/03/05 04:19:59 thorpej Exp $ */
/* $NetBSD: pmap.c,v 1.50 2002/03/05 04:48:03 thorpej Exp $ */
/*
* Copyright (c) 2002 Wasabi Systems, Inc.
@ -143,7 +143,7 @@
#include <machine/param.h>
#include <arm/arm32/katelib.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.49 2002/03/05 04:19:59 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.50 2002/03/05 04:48:03 thorpej Exp $");
#ifdef PMAP_DEBUG
#define PDEBUG(_lev_,_stat_) \
if (pmap_debug_level >= (_lev_)) \
@ -278,7 +278,6 @@ vsize_t npages;
static struct vm_page *pmap_alloc_ptp __P((struct pmap *, vaddr_t, boolean_t));
static struct vm_page *pmap_get_ptp __P((struct pmap *, vaddr_t, boolean_t));
__inline static void pmap_clearbit __P((struct vm_page *, unsigned int));
__inline static boolean_t pmap_testbit __P((struct vm_page *, unsigned int));
extern paddr_t physical_start;
extern paddr_t physical_freestart;
@ -3148,27 +3147,6 @@ pmap_dump_pvlist(phys, m)
#endif /* PMAP_DEBUG */
__inline static boolean_t
pmap_testbit(pg, setbits)
struct vm_page *pg;
unsigned int setbits;
{
PDEBUG(1, printf("pmap_testbit: pa=%08lx set=%08x\n",
VM_PAGE_TO_PHYS(pg), setbits));
/*
* Check saved info only
*/
if (pg->mdpage.pvh_attrs & setbits) {
PDEBUG(0, printf("pmap_attributes = %02x\n",
pg->mdpage.pvh_attrs));
return(TRUE);
}
return(FALSE);
}
static pt_entry_t *
pmap_map_ptes(struct pmap *pmap)
{
@ -3319,31 +3297,50 @@ pmap_clearbit(pg, maskbits)
PMAP_HEAD_TO_MAP_UNLOCK();
}
/*
* pmap_clear_modify:
*
* Clear the "modified" attribute for a page.
*/
boolean_t
pmap_clear_modify(pg)
struct vm_page *pg;
{
boolean_t rv;
PDEBUG(0, printf("pmap_clear_modify pa=%08lx\n", VM_PAGE_TO_PHYS(pg)));
rv = pmap_testbit(pg, PT_M);
pmap_clearbit(pg, PT_M);
return rv;
if (pg->mdpage.pvh_attrs & PT_M) {
rv = TRUE;
pmap_clearbit(pg, PT_M);
} else
rv = FALSE;
PDEBUG(0, printf("pmap_clear_modify pa=%08lx -> %d\n",
VM_PAGE_TO_PHYS(pg), rv));
return (rv);
}
/*
* pmap_clear_reference:
*
* Clear the "referenced" attribute for a page.
*/
boolean_t
pmap_clear_reference(pg)
struct vm_page *pg;
{
boolean_t rv;
PDEBUG(0, printf("pmap_clear_reference pa=%08lx\n",
VM_PAGE_TO_PHYS(pg)));
rv = pmap_testbit(pg, PT_H);
pmap_clearbit(pg, PT_H);
return rv;
if (pg->mdpage.pvh_attrs & PT_H) {
rv = TRUE;
pmap_clearbit(pg, PT_H);
} else
rv = FALSE;
PDEBUG(0, printf("pmap_clear_reference pa=%08lx -> %d\n",
VM_PAGE_TO_PHYS(pg), rv));
return (rv);
}
@ -3355,32 +3352,19 @@ pmap_copy_on_write(pg)
pmap_clearbit(pg, PT_Wr);
}
/*
* pmap_is_modified:
*
* Test if a page has the "modified" attribute.
*/
/* See <arm/arm32/pmap.h> */
boolean_t
pmap_is_modified(pg)
struct vm_page *pg;
{
boolean_t result;
result = pmap_testbit(pg, PT_M);
PDEBUG(1, printf("pmap_is_modified pa=%08lx %x\n",
VM_PAGE_TO_PHYS(pg), result));
return (result);
}
boolean_t
pmap_is_referenced(pg)
struct vm_page *pg;
{
boolean_t result;
result = pmap_testbit(pg, PT_H);
PDEBUG(0, printf("pmap_is_referenced pa=%08lx %x\n",
VM_PAGE_TO_PHYS(pg), result));
return (result);
}
/*
* pmap_is_referenced:
*
* Test if a page has the "referenced" attribute.
*/
/* See <arm/arm32/pmap.h> */
int
pmap_modified_emulation(pmap, va)

5
sys/arch/arm/include/arm32/pmap.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.h,v 1.30 2002/03/05 04:20:00 thorpej Exp $ */
/* $NetBSD: pmap.h,v 1.31 2002/03/05 04:48:03 thorpej Exp $ */
/*
* Copyright (c) 1994,1995 Mark Brinicombe.
@ -156,6 +156,9 @@ extern int pmap_debug_level; /* Only exists if PMAP_DEBUG */
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
#define pmap_is_modified(pg) (((pg)->mdpage.pvh_attrs & PT_M) != 0)
#define pmap_is_referenced(pg) (((pg)->mdpage.pvh_attrs & PT_H) != 0)
#define pmap_phys_address(ppn) (arm_page_to_byte((ppn)))
/*