Commit f99b38fc authored by Lluís Vilanova's avatar Lluís Vilanova Committed by Stefan Hajnoczi
Browse files

trace: Immediately apply per-vCPU state changes if a vCPU is being created 



Right now, function trace_event_set_vcpu_state_dynamic() asynchronously enables
events in the case a vCPU is executing TCG code. If the vCPU is being created
this makes some events like "guest_cpu_enter" to not be traced.

Signed-off-by: default avatarLluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: default avatarEmilio G. Cota <cota@braap.org>
Message-id: 150525662577.19850.13767570977540117247.stgit@frigg.lan
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent 3dabde11

trace/control-target.c

+11 −7
Original line number Diff line number Diff line
@@ -88,6 +88,7 @@ void trace_event_set_vcpu_state_dynamic(CPUState *vcpu, 
            clear_bit(vcpu_id, vcpu->trace_dstate_delayed);

            (*ev->dstate)--;

        }

        if (vcpu->created) {

            /*

             * Delay changes until next TB; we want all TBs to be built from a

             * single set of dstate values to ensure consistency of generated
@@ -95,6 +96,9 @@ void trace_event_set_vcpu_state_dynamic(CPUState *vcpu, 
             */

            async_run_on_cpu(vcpu, trace_event_synchronize_vcpu_state_dynamic,

                             RUN_ON_CPU_NULL);

        } else {

            trace_event_synchronize_vcpu_state_dynamic(vcpu, RUN_ON_CPU_NULL);

        }

    }

}