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xen/trace: add xen_pgd_(un)pin tracepoints 

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
hifive-unleashed-5.1
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
View File

@ -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)));

24
include/trace/events/xen.h
View File

@ -381,6 +381,30 @@ TRACE_EVENT(xen_mmu_release_ptpage,
__entry->pinned ? "" : "un")
);
TRACE_EVENT(xen_mmu_pgd_pin,
TP_PROTO(struct mm_struct *mm, pgd_t *pgd),
TP_ARGS(mm, pgd),
TP_STRUCT__entry(
__field(struct mm_struct *, mm)
__field(pgd_t *, pgd)
),
TP_fast_assign(__entry->mm = mm;
__entry->pgd = pgd),
TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd)
);
TRACE_EVENT(xen_mmu_pgd_unpin,
TP_PROTO(struct mm_struct *mm, pgd_t *pgd),
TP_ARGS(mm, pgd),
TP_STRUCT__entry(
__field(struct mm_struct *, mm)
__field(pgd_t *, pgd)
),
TP_fast_assign(__entry->mm = mm;
__entry->pgd = pgd),
TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd)
);
#endif /* _TRACE_XEN_H */
/* This part must be outside protection */