d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Only keep track of PTE validity statistics for pages not locked in the

Browse Source 
table. The 'locked' attribute is used to circumvent the regular page table
locking for some special pages, with the result that including locked pages
here causes races when updating the stats.
This commit is contained in:
Nathan Whitehorn 2010-12-28 17:02:15 +00:00
parent e58ed10207
commit 52a190480f
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
sys/powerpc/aim/moea64_native.c
View File

@ -281,7 +281,10 @@ moea64_pte_set_native(struct lpte *pt, struct lpte *pvo_pt)
EIEIO();
pt->pte_hi = pvo_pt->pte_hi;
PTESYNC();
moea64_pte_valid++;
/* Keep statistics for unlocked pages */
if (!(pvo_pt->pte_hi & LPTE_LOCKED))
moea64_pte_valid++;
}
static void
@ -310,7 +313,10 @@ moea64_pte_unset_native(mmu_t mmu, uintptr_t pt_cookie, struct lpte *pvo_pt,
* Save the reg & chg bits.
*/
moea64_pte_synch_native(mmu, pt_cookie, pvo_pt);
moea64_pte_valid--;
/* Keep statistics for unlocked pages */
if (!(pvo_pt->pte_hi & LPTE_LOCKED))
moea64_pte_valid--;
}
static void