xen/trace: add ptpage alloc/release tracepoints

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 43fa7771ccb9..f2160997287e 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -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);