diff options
| author | nwhitehorn <nwhitehorn@FreeBSD.org> | 2010-12-28 17:02:15 +0000 |
|---|---|---|
| committer | nwhitehorn <nwhitehorn@FreeBSD.org> | 2010-12-28 17:02:15 +0000 |
| commit | df478abcd28908efb5863685875146b9f7fffd64 (patch) | |
| tree | cf1968e84b56b33afb0ff36392e73ff600f7e204 /sys/powerpc/aim | |
| parent | 936f38f35c397853e5587ee3f6c8e719d90847d0 (diff) | |
| download | FreeBSD-src-df478abcd28908efb5863685875146b9f7fffd64.zip FreeBSD-src-df478abcd28908efb5863685875146b9f7fffd64.tar.gz | |
Only keep track of PTE validity statistics for pages not locked in the
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.
Diffstat (limited to 'sys/powerpc/aim')
| -rw-r--r-- | sys/powerpc/aim/moea64_native.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/powerpc/aim/moea64_native.c b/sys/powerpc/aim/moea64_native.c index 1869836..bca51ab 100644 --- a/sys/powerpc/aim/moea64_native.c +++ b/sys/powerpc/aim/moea64_native.c @@ -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 |
