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Commit 64be5007 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
Browse files

KVM: x86: trace "exit to userspace" event 



Add tracepoint for userspace exit.

Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 612819c3

include/trace/events/kvm.h

+30 −0
Original line number Diff line number Diff line
@@ -6,6 +6,36 @@ 
#undef TRACE_SYSTEM

#define TRACE_SYSTEM kvm



#define ERSN(x) { KVM_EXIT_##x, "KVM_EXIT_" #x }



#define kvm_trace_exit_reason						\

	ERSN(UNKNOWN), ERSN(EXCEPTION), ERSN(IO), ERSN(HYPERCALL),	\

	ERSN(DEBUG), ERSN(HLT), ERSN(MMIO), ERSN(IRQ_WINDOW_OPEN),	\

	ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR),	\

	ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\

	ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI)



TRACE_EVENT(kvm_userspace_exit,

	    TP_PROTO(__u32 reason, int errno),

	    TP_ARGS(reason, errno),



	TP_STRUCT__entry(

		__field(	__u32,		reason		)

		__field(	int,		errno		)

	),



	TP_fast_assign(

		__entry->reason		= reason;

		__entry->errno		= errno;

	),



	TP_printk("reason %s (%d)",

		  __entry->errno < 0 ?

		  (__entry->errno == -EINTR ? "restart" : "error") :

		  __print_symbolic(__entry->reason, kvm_trace_exit_reason),

		  __entry->errno < 0 ? -__entry->errno : __entry->reason)

);



#if defined(__KVM_HAVE_IOAPIC)

TRACE_EVENT(kvm_set_irq,

	TP_PROTO(unsigned int gsi, int level, int irq_source_id),

virt/kvm/kvm_main.c

+1 −0
Original line number Diff line number Diff line
@@ -1562,6 +1562,7 @@ static long kvm_vcpu_ioctl(struct file *filp, 
		if (arg)

			goto out;

		r = kvm_arch_vcpu_ioctl_run(vcpu, vcpu->run);

		trace_kvm_userspace_exit(vcpu->run->exit_reason, r);

		break;

	case KVM_GET_REGS: {

		struct kvm_regs *kvm_regs;