xen/trace: add ptpage alloc/release tracepoints (c2ba050d) · Commits · e / devices / android_kernel_xiaomi_markw

arch/x86/xen/mmu.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -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));

		if (PagePinned(virt_to_page(mm->pgd))) {
		trace_xen_mmu_alloc_ptpage(mm, pfn, level, pinned);

		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);

		trace_xen_mmu_release_ptpage(pfn, level, pinned);

		if (PagePinned(page)) {
		if (pinned) {
		if (!PageHighMem(page)) {
		if (level == PT_PTE && USE_SPLIT_PTLOCKS)
		pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, pfn);

+33 −0

Original line number	Diff line number	Diff line
		@@ -347,6 +347,39 @@ TRACE_EVENT(xen_mmu_ptep_modify_prot_commit,
		(int)sizeof(pteval_t) * 2, (unsigned long long)__entry->pteval)
		);

		TRACE_EVENT(xen_mmu_alloc_ptpage,
		TP_PROTO(struct mm_struct *mm, unsigned long pfn, unsigned level, bool pinned),
		TP_ARGS(mm, pfn, level, pinned),
		TP_STRUCT__entry(
		__field(struct mm_struct *, mm)
		__field(unsigned long, pfn)
		__field(unsigned, level)
		__field(bool, pinned)
		),
		TP_fast_assign(__entry->mm = mm;
		__entry->pfn = pfn;
		__entry->level = level;
		__entry->pinned = pinned),
		TP_printk("mm %p pfn %lx level %d %spinned",
		__entry->mm, __entry->pfn, __entry->level,
		__entry->pinned ? "" : "un")
		);

		TRACE_EVENT(xen_mmu_release_ptpage,
		TP_PROTO(unsigned long pfn, unsigned level, bool pinned),
		TP_ARGS(pfn, level, pinned),
		TP_STRUCT__entry(
		__field(unsigned long, pfn)
		__field(unsigned, level)
		__field(bool, pinned)
		),
		TP_fast_assign(__entry->pfn = pfn;
		__entry->level = level;
		__entry->pinned = pinned),
		TP_printk("pfn %lx level %d %spinned",
		__entry->pfn, __entry->level,
		__entry->pinned ? "" : "un")
		);

		#endif /* _TRACE_XEN_H */