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xen/trace: add ptpage alloc/release tracepoints

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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2010-12-17 14:21:17 -08:00
parent 8470880791
commit c2ba050d2e
2 changed files with 41 additions and 2 deletions
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10
arch/x86/xen/mmu.c
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@ -1478,8 +1478,11 @@ static void __init xen_release_pmd_init(unsigned long pfn)
static void xen_alloc_ptpage(struct mm_struct *mm, unsigned long pfn, unsigned level)
{
struct page *page = pfn_to_page(pfn);
int pinned = PagePinned(virt_to_page(mm->pgd));
trace_xen_mmu_alloc_ptpage(mm, pfn, level, pinned);
if (PagePinned(virt_to_page(mm->pgd))) {
if (pinned) {
SetPagePinned(page);
if (!PageHighMem(page)) {
@ -1508,8 +1511,11 @@ static void xen_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
static void xen_release_ptpage(unsigned long pfn, unsigned level)
{
struct page *page = pfn_to_page(pfn);
bool pinned = PagePinned(page);
if (PagePinned(page)) {
trace_xen_mmu_release_ptpage(pfn, level, pinned);
if (pinned) {
if (!PageHighMem(page)) {
if (level == PT_PTE && USE_SPLIT_PTLOCKS)
pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, pfn);