xen/trace: add segment desc tracing (ab78f7ad) · Commits · e / devices / android_kernel_xiaomi_markw

arch/x86/xen/enlighten.c

+15 −1

Original line number	Diff line number	Diff line
		@@ -341,6 +341,8 @@ static void xen_set_ldt(const void *addr, unsigned entries)
		struct mmuext_op *op;
		struct multicall_space mcs = xen_mc_entry(sizeof(*op));

		trace_xen_cpu_set_ldt(addr, entries);

		op = mcs.args;
		op->cmd = MMUEXT_SET_LDT;
		op->arg1.linear_addr = (unsigned long)addr;
		@@ -496,6 +498,8 @@ static void xen_write_ldt_entry(struct desc_struct *dt, int entrynum,
		xmaddr_t mach_lp = arbitrary_virt_to_machine(&dt[entrynum]);
		u64 entry = (u64 )ptr;

		trace_xen_cpu_write_ldt_entry(dt, entrynum, entry);

		preempt_disable();

		xen_mc_flush();
		@@ -565,6 +569,8 @@ static void xen_write_idt_entry(gate_desc dt, int entrynum, const gate_desc g)
		unsigned long p = (unsigned long)&dt[entrynum];
		unsigned long start, end;

		trace_xen_cpu_write_idt_entry(dt, entrynum, g);

		preempt_disable();

		start = __this_cpu_read(idt_desc.address);
		@@ -619,6 +625,8 @@ static void xen_load_idt(const struct desc_ptr *desc)
		static DEFINE_SPINLOCK(lock);
		static struct trap_info traps[257];

		trace_xen_cpu_load_idt(desc);

		spin_lock(&lock);

		__get_cpu_var(idt_desc) = *desc;
		@@ -637,6 +645,8 @@ static void xen_load_idt(const struct desc_ptr *desc)
		static void xen_write_gdt_entry(struct desc_struct *dt, int entry,
		const void *desc, int type)
		{
		trace_xen_cpu_write_gdt_entry(dt, entry, desc, type);

		preempt_disable();

		switch (type) {
		@@ -665,6 +675,8 @@ static void xen_write_gdt_entry(struct desc_struct *dt, int entry,
		static void __init xen_write_gdt_entry_boot(struct desc_struct *dt, int entry,
		const void *desc, int type)
		{
		trace_xen_cpu_write_gdt_entry(dt, entry, desc, type);

		switch (type) {
		case DESC_LDT:
		case DESC_TSS:
		@@ -684,7 +696,9 @@ static void __init xen_write_gdt_entry_boot(struct desc_struct *dt, int entry,
		static void xen_load_sp0(struct tss_struct *tss,
		struct thread_struct *thread)
		{
		struct multicall_space mcs = xen_mc_entry(0);
		struct multicall_space mcs;

		mcs = xen_mc_entry(0);
		MULTI_stack_switch(mcs.mc, __KERNEL_DS, thread->sp0);
		xen_mc_issue(PARAVIRT_LAZY_CPU);
		}

include/trace/events/xen.h

+75 −0

Original line number	Diff line number	Diff line
		@@ -405,6 +405,81 @@ TRACE_EVENT(xen_mmu_pgd_unpin,
		TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd)
		);

		/* CPU */
		TRACE_EVENT(xen_cpu_write_ldt_entry,
		TP_PROTO(struct desc_struct *dt, int entrynum, u64 desc),
		TP_ARGS(dt, entrynum, desc),
		TP_STRUCT__entry(
		__field(struct desc_struct *, dt)
		__field(int, entrynum)
		__field(u64, desc)
		),
		TP_fast_assign(__entry->dt = dt;
		__entry->entrynum = entrynum;
		__entry->desc = desc;
		),
		TP_printk("dt %p entrynum %d entry %016llx",
		__entry->dt, __entry->entrynum,
		(unsigned long long)__entry->desc)
		);

		TRACE_EVENT(xen_cpu_write_idt_entry,
		TP_PROTO(gate_desc dt, int entrynum, const gate_desc ent),
		TP_ARGS(dt, entrynum, ent),
		TP_STRUCT__entry(
		__field(gate_desc *, dt)
		__field(int, entrynum)
		),
		TP_fast_assign(__entry->dt = dt;
		__entry->entrynum = entrynum;
		),
		TP_printk("dt %p entrynum %d",
		__entry->dt, __entry->entrynum)
		);

		TRACE_EVENT(xen_cpu_load_idt,
		TP_PROTO(const struct desc_ptr *desc),
		TP_ARGS(desc),
		TP_STRUCT__entry(
		__field(unsigned long, addr)
		),
		TP_fast_assign(__entry->addr = desc->address),
		TP_printk("addr %lx", __entry->addr)
		);

		TRACE_EVENT(xen_cpu_write_gdt_entry,
		TP_PROTO(struct desc_struct dt, int entrynum, const void desc, int type),
		TP_ARGS(dt, entrynum, desc, type),
		TP_STRUCT__entry(
		__field(u64, desc)
		__field(struct desc_struct *, dt)
		__field(int, entrynum)
		__field(int, type)
		),
		TP_fast_assign(__entry->dt = dt;
		__entry->entrynum = entrynum;
		__entry->desc = (u64 )desc;
		__entry->type = type;
		),
		TP_printk("dt %p entrynum %d type %d desc %016llx",
		__entry->dt, __entry->entrynum, __entry->type,
		(unsigned long long)__entry->desc)
		);

		TRACE_EVENT(xen_cpu_set_ldt,
		TP_PROTO(const void *addr, unsigned entries),
		TP_ARGS(addr, entries),
		TP_STRUCT__entry(
		__field(const void *, addr)
		__field(unsigned, entries)
		),
		TP_fast_assign(__entry->addr = addr;
		__entry->entries = entries),
		TP_printk("addr %p entries %u",
		__entry->addr, __entry->entries)
		);


		#endif /* _TRACE_XEN_H */

		/* This part must be outside protection */