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| author | dt <dt@FreeBSD.org> | 1999-04-21 10:51:04 +0000 |
|---|---|---|
| committer | dt <dt@FreeBSD.org> | 1999-04-21 10:51:04 +0000 |
| commit | d0aab1cd6909d34e466e2ecb5ce4d4d31dd8a798 (patch) | |
| tree | bc50d48643d03437950f105c1b80497780089f18 /sys | |
| parent | 306f74ff3a1149a222f14620a2bf5b987aef2772 (diff) | |
| download | FreeBSD-src-d0aab1cd6909d34e466e2ecb5ce4d4d31dd8a798.zip FreeBSD-src-d0aab1cd6909d34e466e2ecb5ce4d4d31dd8a798.tar.gz | |
pmap_ts_referenced(): set fault on {read|execute|write} bits on the page on,
so we will know when the page is accessed again.
(Also, make it return an integer, not "boolean" TRUE/FALSE).
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/alpha/alpha/pmap.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/sys/alpha/alpha/pmap.c b/sys/alpha/alpha/pmap.c index 4054cac..52d5454 100644 --- a/sys/alpha/alpha/pmap.c +++ b/sys/alpha/alpha/pmap.c @@ -43,7 +43,7 @@ * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91 * from: i386 Id: pmap.c,v 1.193 1998/04/19 15:22:48 bde Exp * with some ideas from NetBSD's alpha pmap - * $Id: pmap.c,v 1.16 1999/04/05 19:38:27 julian Exp $ + * $Id: pmap.c,v 1.17 1999/04/07 03:34:32 msmith Exp $ */ /* @@ -2830,17 +2830,19 @@ int pmap_ts_referenced(vm_offset_t pa) { pv_table_t *ppv; - int ret; if (!pmap_is_managed(pa)) - return FALSE; + return 0; ppv = pa_to_pvh(pa); - ret = (ppv->pv_flags & PV_TABLE_REF) != 0; - ppv->pv_flags &= ~PV_TABLE_REF; + if (ppv->pv_flags & PV_TABLE_REF) { + pmap_changebit(pa, PG_FOR|PG_FOE|PG_FOW, TRUE); + ppv->pv_flags &= ~PV_TABLE_REF; + return 1; + } - return ret; + return 0; } /* |
