Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Slight optimization when pv_unlink'ing last entry (suggested by Eric Fair).

Browse Source 
Use MR4() macro where appropriate.
This commit is contained in:
pk 1997-07-06 12:29:54 +00:00
parent c3af302842
commit 48ad000318
1 changed files with 12 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sys/arch/sparc/sparc/pmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.85 1997/07/06 12:22:39 pk Exp $ */
/* $NetBSD: pmap.c,v 1.86 1997/07/06 12:29:54 pk Exp $ */
/*
* Copyright (c) 1996
@ -1986,7 +1986,7 @@ pv_changepte4_4c(pv0, bis, bic)
tpte = getpte4(va);
}
if (tpte & PG_V)
flags |= (tpte >> PG_M_SHIFT) & (PV_MOD|PV_REF);
flags |= MR4_4C(tpte);
tpte = (tpte | bis) & ~bic;
setpte4(va, tpte);
if (pte != NULL) /* update software copy */
@ -2054,8 +2054,7 @@ pv_syncflags4_4c(pv0)
tpte = getpte4(va);
}
if (tpte & (PG_M|PG_U) && tpte & PG_V) {
flags |= (tpte >> PG_M_SHIFT) &
(PV_MOD|PV_REF);
flags |= MR4_4C(tpte);
tpte &= ~(PG_M|PG_U);
setpte4(va, tpte);
}
@ -2100,8 +2099,11 @@ pv_unlink4_4c(pv, pm, va)
pv->pv_pmap = npv->pv_pmap;
pv->pv_va = npv->pv_va;
FREE(npv, M_VMPVENT);
} else
} else {
pv->pv_pmap = NULL;
pv->pv_flags &= ~PV_NC;
return;
}
} else {
register struct pvlist *prev;
@ -2373,8 +2375,11 @@ pv_unlink4m(pv, pm, va)
pv->pv_pmap = npv->pv_pmap;
pv->pv_va = npv->pv_va;
FREE(npv, M_VMPVENT);
} else
} else {
pv->pv_pmap = NULL;
pv->pv_flags |= PV_C4M;
return;
}
} else {
register struct pvlist *prev;
@ -4727,8 +4732,7 @@ pmap_page_protect4m(pa, prot)
free(rp->rg_segmap, M_VMPMAP);
rp->rg_segmap = NULL;
free(rp->rg_seg_ptps, M_VMPMAP);
setpgt4m(&pm->pm_reg_ptps[vr],
SRMMU_TEINVALID);
setpgt4m(&pm->pm_reg_ptps[vr], SRMMU_TEINVALID);
}
}