control-vcpu.h (1869B)
1 /* 2 * Interface for configuring and controlling the state of tracing events. 3 * 4 * Copyright (C) 2011-2016 Lluís Vilanova <vilanova@ac.upc.edu> 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 10 #ifndef TRACE__CONTROL_VCPU_H 11 #define TRACE__CONTROL_VCPU_H 12 13 #include "control.h" 14 #include "event-internal.h" 15 #include "hw/core/cpu.h" 16 17 /** 18 * trace_event_get_vcpu_state: 19 * @vcpu: Target vCPU. 20 * @id: Event identifier name. 21 * 22 * Get the tracing state of an event (both static and dynamic) for the given 23 * vCPU. 24 * 25 * If the event has the disabled property, the check will have no performance 26 * impact. 27 */ 28 #define trace_event_get_vcpu_state(vcpu, id) \ 29 ((id ##_ENABLED) && \ 30 trace_event_get_vcpu_state_dynamic_by_vcpu_id( \ 31 vcpu, _ ## id ## _EVENT.vcpu_id)) 32 33 /** 34 * trace_event_get_vcpu_state_dynamic: 35 * 36 * Get the dynamic tracing state of an event for the given vCPU. 37 */ 38 static bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, TraceEvent *ev); 39 40 #include "control-internal.h" 41 42 static inline bool 43 trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu, 44 uint32_t vcpu_id) 45 { 46 /* it's on fast path, avoid consistency checks (asserts) */ 47 if (unlikely(trace_events_enabled_count)) { 48 return test_bit(vcpu_id, vcpu->trace_dstate); 49 } else { 50 return false; 51 } 52 } 53 54 static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, 55 TraceEvent *ev) 56 { 57 uint32_t vcpu_id; 58 assert(trace_event_is_vcpu(ev)); 59 vcpu_id = trace_event_get_vcpu_id(ev); 60 return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id); 61 } 62 63 #endif