Commit 0e77b324 authored by Maxim Levitsky's avatar Maxim Levitsky Committed by Sean Christopherson
Browse files

KVM: x86: Add information about pending requests to kvm_exit tracepoint 



Print pending requests in the kvm_exit tracepoint, which allows userspace
to gather information on how often KVM interrupts vCPUs due to specific
requests.

Signed-off-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20240910200350.264245-3-mlevitsk@redhat.com


[sean: massage changelog]
Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 3e633e7e

arch/x86/kvm/trace.h

+6 −2
Original line number Diff line number Diff line
@@ -315,12 +315,14 @@ TRACE_EVENT(name, \ 
		__field(	u32,	        intr_info	)	     \

		__field(	u32,	        error_code	)	     \

		__field(	unsigned int,	vcpu_id         )	     \

		__field(	u64,		requests        )	     \

	),								     \

									     \

	TP_fast_assign(							     \

		__entry->guest_rip	= kvm_rip_read(vcpu);		     \

		__entry->isa            = isa;				     \

		__entry->vcpu_id        = vcpu->vcpu_id;		     \

		__entry->requests       = READ_ONCE(vcpu->requests);	     \

		kvm_x86_call(get_exit_info)(vcpu,			     \

					    &__entry->exit_reason,	     \

					    &__entry->info1,		     \
@@ -330,11 +332,13 @@ TRACE_EVENT(name, \ 
	),								     \

									     \

	TP_printk("vcpu %u reason %s%s%s rip 0x%lx info1 0x%016llx "	     \

		  "info2 0x%016llx intr_info 0x%08x error_code 0x%08x",	     \

		  "info2 0x%016llx intr_info 0x%08x error_code 0x%08x "      \

		  "requests 0x%016llx",					     \

		  __entry->vcpu_id,					     \

		  kvm_print_exit_reason(__entry->exit_reason, __entry->isa), \

		  __entry->guest_rip, __entry->info1, __entry->info2,	     \

		  __entry->intr_info, __entry->error_code)		     \

		  __entry->intr_info, __entry->error_code, 		     \

		  __entry->requests)					     \

)



/*