xen/trace: add xen_pgd_(un)pin tracepoints (5f94fb5b) · Commits · e / devices / android_kernel_xiaomi_markw

arch/x86/xen/mmu.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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 −0

Original line number	Diff line number	Diff line
		@@ -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 */