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xen/trace: add xen_pgd_(un)pin tracepoints

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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2010-12-17 15:31:23 -08:00
parent c2ba050d2e
commit 5f94fb5b8e
2 changed files with 28 additions and 0 deletions
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4
arch/x86/xen/mmu.c
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@@ -885,6 +885,8 @@ static int xen_pin_page(struct mm_struct *mm, struct page *page,
read-only, and can be pinned. */
static void __xen_pgd_pin(struct mm_struct *mm, pgd_t *pgd)
{
trace_xen_mmu_pgd_pin(mm, pgd);
xen_mc_batch();
if (__xen_pgd_walk(mm, pgd, xen_pin_page, USER_LIMIT)) {
@@ -1010,6 +1012,8 @@ static int xen_unpin_page(struct mm_struct *mm, struct page *page,
/* Release a pagetables pages back as normal RW */
static void __xen_pgd_unpin(struct mm_struct *mm, pgd_t *pgd)
{
trace_xen_mmu_pgd_unpin(mm, pgd);
xen_mc_batch();
xen_do_pin(MMUEXT_UNPIN_TABLE, PFN_DOWN(__pa(pgd)));