diff options
Diffstat (limited to 'trace')
| -rw-r--r-- | trace/control-internal.h | 10 | ||||
| -rw-r--r-- | trace/control-target.c | 109 | ||||
| -rw-r--r-- | trace/control-vcpu.h | 63 | ||||
| -rw-r--r-- | trace/control.c | 28 | ||||
| -rw-r--r-- | trace/control.h | 48 | ||||
| -rw-r--r-- | trace/event-internal.h | 2 | ||||
| -rw-r--r-- | trace/qmp.c | 76 | ||||
| -rw-r--r-- | trace/trace-hmp-cmds.c | 18 |
8 files changed, 21 insertions, 333 deletions
diff --git a/trace/control-internal.h b/trace/control-internal.h index 8b2b50a7cf..8d818d359b 100644 --- a/trace/control-internal.h +++ b/trace/control-internal.h @@ -25,16 +25,6 @@ static inline uint32_t trace_event_get_id(TraceEvent *ev) return ev->id; } -static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev) -{ - return ev->vcpu_id; -} - -static inline bool trace_event_is_vcpu(TraceEvent *ev) -{ - return ev->vcpu_id != TRACE_VCPU_EVENT_NONE; -} - static inline const char * trace_event_get_name(TraceEvent *ev) { assert(ev != NULL); diff --git a/trace/control-target.c b/trace/control-target.c index c0c1e2310a..97f21e476d 100644 --- a/trace/control-target.c +++ b/trace/control-target.c @@ -36,113 +36,22 @@ void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state) void trace_event_set_state_dynamic(TraceEvent *ev, bool state) { - CPUState *vcpu; assert(trace_event_get_state_static(ev)); - if (trace_event_is_vcpu(ev) && likely(first_cpu != NULL)) { - CPU_FOREACH(vcpu) { - trace_event_set_vcpu_state_dynamic(vcpu, ev, state); - } - } else { - /* - * Without the "vcpu" property, dstate can only be 1 or 0. With it, we - * haven't instantiated any vCPU yet, so we will set a global state - * instead, and trace_init_vcpu will reconcile it afterwards. - */ - bool state_pre = *ev->dstate; - if (state_pre != state) { - if (state) { - trace_events_enabled_count++; - *ev->dstate = 1; - } else { - trace_events_enabled_count--; - *ev->dstate = 0; - } - } - } -} -static void trace_event_synchronize_vcpu_state_dynamic( - CPUState *vcpu, run_on_cpu_data ignored) -{ - bitmap_copy(vcpu->trace_dstate, vcpu->trace_dstate_delayed, - CPU_TRACE_DSTATE_MAX_EVENTS); - tcg_flush_jmp_cache(vcpu); -} - -void trace_event_set_vcpu_state_dynamic(CPUState *vcpu, - TraceEvent *ev, bool state) -{ - uint32_t vcpu_id; - bool state_pre; - assert(trace_event_get_state_static(ev)); - assert(trace_event_is_vcpu(ev)); - vcpu_id = trace_event_get_vcpu_id(ev); - state_pre = test_bit(vcpu_id, vcpu->trace_dstate); + /* + * There is no longer a "vcpu" property, dstate can only be 1 or + * 0. With it, we haven't instantiated any vCPU yet, so we will + * set a global state instead, and trace_init_vcpu will reconcile + * it afterwards. + */ + bool state_pre = *ev->dstate; if (state_pre != state) { if (state) { trace_events_enabled_count++; - set_bit(vcpu_id, vcpu->trace_dstate_delayed); - (*ev->dstate)++; + *ev->dstate = 1; } else { trace_events_enabled_count--; - 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 - * tracing code. - */ - 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); - } - } -} - -static bool adding_first_cpu1(void) -{ - CPUState *cpu; - size_t count = 0; - CPU_FOREACH(cpu) { - count++; - if (count > 1) { - return false; - } - } - return true; -} - -static bool adding_first_cpu(void) -{ - QEMU_LOCK_GUARD(&qemu_cpu_list_lock); - - return adding_first_cpu1(); -} - -void trace_init_vcpu(CPUState *vcpu) -{ - TraceEventIter iter; - TraceEvent *ev; - trace_event_iter_init_all(&iter); - while ((ev = trace_event_iter_next(&iter)) != NULL) { - if (trace_event_is_vcpu(ev) && - trace_event_get_state_static(ev) && - trace_event_get_state_dynamic(ev)) { - if (adding_first_cpu()) { - /* check preconditions */ - assert(*ev->dstate == 1); - /* disable early-init state ... */ - *ev->dstate = 0; - trace_events_enabled_count--; - /* ... and properly re-enable */ - trace_event_set_vcpu_state_dynamic(vcpu, ev, true); - } else { - trace_event_set_vcpu_state_dynamic(vcpu, ev, true); - } + *ev->dstate = 0; } } - trace_guest_cpu_enter(vcpu); } diff --git a/trace/control-vcpu.h b/trace/control-vcpu.h deleted file mode 100644 index 0f98ebe7b5..0000000000 --- a/trace/control-vcpu.h +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Interface for configuring and controlling the state of tracing events. - * - * Copyright (C) 2011-2016 Lluís Vilanova <vilanova@ac.upc.edu> - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - */ - -#ifndef TRACE__CONTROL_VCPU_H -#define TRACE__CONTROL_VCPU_H - -#include "control.h" -#include "event-internal.h" -#include "hw/core/cpu.h" - -/** - * trace_event_get_vcpu_state: - * @vcpu: Target vCPU. - * @id: Event identifier name. - * - * Get the tracing state of an event (both static and dynamic) for the given - * vCPU. - * - * If the event has the disabled property, the check will have no performance - * impact. - */ -#define trace_event_get_vcpu_state(vcpu, id) \ - ((id ##_ENABLED) && \ - trace_event_get_vcpu_state_dynamic_by_vcpu_id( \ - vcpu, _ ## id ## _EVENT.vcpu_id)) - -/** - * trace_event_get_vcpu_state_dynamic: - * - * Get the dynamic tracing state of an event for the given vCPU. - */ -static bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, TraceEvent *ev); - -#include "control-internal.h" - -static inline bool -trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu, - uint32_t vcpu_id) -{ - /* it's on fast path, avoid consistency checks (asserts) */ - if (unlikely(trace_events_enabled_count)) { - return test_bit(vcpu_id, vcpu->trace_dstate); - } else { - return false; - } -} - -static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, - TraceEvent *ev) -{ - uint32_t vcpu_id; - assert(trace_event_is_vcpu(ev)); - vcpu_id = trace_event_get_vcpu_id(ev); - return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id); -} - -#endif diff --git a/trace/control.c b/trace/control.c index 6c77cc6318..1a48a7e266 100644 --- a/trace/control.c +++ b/trace/control.c @@ -68,16 +68,6 @@ void trace_event_register_group(TraceEvent **events) size_t i; for (i = 0; events[i] != NULL; i++) { events[i]->id = next_id++; - if (events[i]->vcpu_id == TRACE_VCPU_EVENT_NONE) { - continue; - } - - if (likely(next_vcpu_id < CPU_TRACE_DSTATE_MAX_EVENTS)) { - events[i]->vcpu_id = next_vcpu_id++; - } else { - warn_report("too many vcpu trace events; dropping '%s'", - events[i]->name); - } } event_groups = g_renew(TraceEventGroup, event_groups, nevent_groups + 1); event_groups[nevent_groups].events = events; @@ -272,24 +262,6 @@ void trace_init_file(void) #endif } -void trace_fini_vcpu(CPUState *vcpu) -{ - TraceEventIter iter; - TraceEvent *ev; - - trace_guest_cpu_exit(vcpu); - - trace_event_iter_init_all(&iter); - while ((ev = trace_event_iter_next(&iter)) != NULL) { - if (trace_event_is_vcpu(ev) && - trace_event_get_state_static(ev) && - trace_event_get_vcpu_state_dynamic(vcpu, ev)) { - /* must disable to affect the global counter */ - trace_event_set_vcpu_state_dynamic(vcpu, ev, false); - } - } -} - bool trace_init_backends(void) { #ifdef CONFIG_TRACE_SIMPLE diff --git a/trace/control.h b/trace/control.h index 23b8393b29..dfd209edd8 100644 --- a/trace/control.h +++ b/trace/control.h @@ -90,23 +90,6 @@ static bool trace_event_is_pattern(const char *str); static uint32_t trace_event_get_id(TraceEvent *ev); /** - * trace_event_get_vcpu_id: - * - * Get the per-vCPU identifier of an event. - * - * Special value #TRACE_VCPU_EVENT_NONE means the event is not vCPU-specific - * (does not have the "vcpu" property). - */ -static uint32_t trace_event_get_vcpu_id(TraceEvent *ev); - -/** - * trace_event_is_vcpu: - * - * Whether this is a per-vCPU event. - */ -static bool trace_event_is_vcpu(TraceEvent *ev); - -/** * trace_event_get_name: * * Get the name of an event. @@ -173,21 +156,6 @@ static bool trace_event_get_state_dynamic(TraceEvent *ev); void trace_event_set_state_dynamic(TraceEvent *ev, bool state); /** - * trace_event_set_vcpu_state_dynamic: - * - * Set the dynamic tracing state of an event for the given vCPU. - * - * Pre-condition: trace_event_get_vcpu_state_static(ev) == true - * - * Note: Changes for execution-time events with the 'tcg' property will not be - * propagated until the next TB is executed (iff executing in TCG mode). - */ -void trace_event_set_vcpu_state_dynamic(CPUState *vcpu, - TraceEvent *ev, bool state); - - - -/** * trace_init_backends: * * Initialize the tracing backend. @@ -206,22 +174,6 @@ bool trace_init_backends(void); void trace_init_file(void); /** - * trace_init_vcpu: - * @vcpu: Added vCPU. - * - * Set initial dynamic event state for a hot-plugged vCPU. - */ -void trace_init_vcpu(CPUState *vcpu); - -/** - * trace_fini_vcpu: - * @vcpu: Removed vCPU. - * - * Disable dynamic event state for a hot-unplugged vCPU. - */ -void trace_fini_vcpu(CPUState *vcpu); - -/** * trace_list_events: * @f: Where to send output. * diff --git a/trace/event-internal.h b/trace/event-internal.h index f63500b37e..0c24e01b52 100644 --- a/trace/event-internal.h +++ b/trace/event-internal.h @@ -19,7 +19,6 @@ /** * TraceEvent: * @id: Unique event identifier. - * @vcpu_id: Unique per-vCPU event identifier. * @name: Event name. * @sstate: Static tracing state. * @dstate: Dynamic tracing state @@ -33,7 +32,6 @@ */ typedef struct TraceEvent { uint32_t id; - uint32_t vcpu_id; const char * name; const bool sstate; uint16_t *dstate; diff --git a/trace/qmp.c b/trace/qmp.c index 3b4f4702b4..3e3971c6a8 100644 --- a/trace/qmp.c +++ b/trace/qmp.c @@ -10,23 +10,10 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "qapi/qapi-commands-trace.h" -#include "control-vcpu.h" +#include "control.h" -static CPUState *get_cpu(bool has_vcpu, int vcpu, Error **errp) -{ - if (has_vcpu) { - CPUState *cpu = qemu_get_cpu(vcpu); - if (cpu == NULL) { - error_setg(errp, "invalid vCPU index %u", vcpu); - } - return cpu; - } else { - return NULL; - } -} - -static bool check_events(bool has_vcpu, bool ignore_unavailable, bool is_pattern, +static bool check_events(bool ignore_unavailable, bool is_pattern, const char *name, Error **errp) { if (!is_pattern) { @@ -38,12 +25,6 @@ static bool check_events(bool has_vcpu, bool ignore_unavailable, bool is_pattern return false; } - /* error for non-vcpu event */ - if (has_vcpu && !trace_event_is_vcpu(ev)) { - error_setg(errp, "event \"%s\" is not vCPU-specific", name); - return false; - } - /* error for unavailable event */ if (!ignore_unavailable && !trace_event_get_state_static(ev)) { error_setg(errp, "event \"%s\" is disabled", name); @@ -70,22 +51,13 @@ TraceEventInfoList *qmp_trace_event_get_state(const char *name, bool has_vcpu, int64_t vcpu, Error **errp) { - Error *err = NULL; TraceEventInfoList *events = NULL; TraceEventIter iter; TraceEvent *ev; bool is_pattern = trace_event_is_pattern(name); - CPUState *cpu; - - /* Check provided vcpu */ - cpu = get_cpu(has_vcpu, vcpu, &err); - if (err) { - error_propagate(errp, err); - return NULL; - } /* Check events */ - if (!check_events(has_vcpu, true, is_pattern, name, errp)) { + if (!check_events(true, is_pattern, name, errp)) { return NULL; } @@ -93,33 +65,17 @@ TraceEventInfoList *qmp_trace_event_get_state(const char *name, trace_event_iter_init_pattern(&iter, name); while ((ev = trace_event_iter_next(&iter)) != NULL) { TraceEventInfo *value; - bool is_vcpu = trace_event_is_vcpu(ev); - if (has_vcpu && !is_vcpu) { - continue; - } value = g_new(TraceEventInfo, 1); - value->vcpu = is_vcpu; value->name = g_strdup(trace_event_get_name(ev)); if (!trace_event_get_state_static(ev)) { value->state = TRACE_EVENT_STATE_UNAVAILABLE; } else { - if (has_vcpu) { - if (is_vcpu) { - if (trace_event_get_vcpu_state_dynamic(cpu, ev)) { - value->state = TRACE_EVENT_STATE_ENABLED; - } else { - value->state = TRACE_EVENT_STATE_DISABLED; - } - } - /* else: already skipped above */ + if (trace_event_get_state_dynamic(ev)) { + value->state = TRACE_EVENT_STATE_ENABLED; } else { - if (trace_event_get_state_dynamic(ev)) { - value->state = TRACE_EVENT_STATE_ENABLED; - } else { - value->state = TRACE_EVENT_STATE_DISABLED; - } + value->state = TRACE_EVENT_STATE_DISABLED; } } QAPI_LIST_PREPEND(events, value); @@ -133,21 +89,12 @@ void qmp_trace_event_set_state(const char *name, bool enable, bool has_vcpu, int64_t vcpu, Error **errp) { - Error *err = NULL; TraceEventIter iter; TraceEvent *ev; bool is_pattern = trace_event_is_pattern(name); - CPUState *cpu; - - /* Check provided vcpu */ - cpu = get_cpu(has_vcpu, vcpu, &err); - if (err) { - error_propagate(errp, err); - return; - } /* Check events */ - if (!check_events(has_vcpu, has_ignore_unavailable && ignore_unavailable, + if (!check_events(has_ignore_unavailable && ignore_unavailable, is_pattern, name, errp)) { return; } @@ -155,14 +102,9 @@ void qmp_trace_event_set_state(const char *name, bool enable, /* Apply changes (all errors checked above) */ trace_event_iter_init_pattern(&iter, name); while ((ev = trace_event_iter_next(&iter)) != NULL) { - if (!trace_event_get_state_static(ev) || - (has_vcpu && !trace_event_is_vcpu(ev))) { + if (!trace_event_get_state_static(ev)) { continue; } - if (has_vcpu) { - trace_event_set_vcpu_state_dynamic(cpu, ev, enable); - } else { - trace_event_set_state_dynamic(ev, enable); - } + trace_event_set_state_dynamic(ev, enable); } } diff --git a/trace/trace-hmp-cmds.c b/trace/trace-hmp-cmds.c index 792876c34a..86211fce27 100644 --- a/trace/trace-hmp-cmds.c +++ b/trace/trace-hmp-cmds.c @@ -37,16 +37,10 @@ void hmp_trace_event(Monitor *mon, const QDict *qdict) { const char *tp_name = qdict_get_str(qdict, "name"); bool new_state = qdict_get_bool(qdict, "option"); - bool has_vcpu = qdict_haskey(qdict, "vcpu"); - int vcpu = qdict_get_try_int(qdict, "vcpu", 0); Error *local_err = NULL; - if (vcpu < 0) { - monitor_printf(mon, "argument vcpu must be positive"); - return; - } - - qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err); + qmp_trace_event_set_state(tp_name, new_state, + true, true, false, 0, &local_err); if (local_err) { error_report_err(local_err); } @@ -80,8 +74,6 @@ void hmp_trace_file(Monitor *mon, const QDict *qdict) void hmp_info_trace_events(Monitor *mon, const QDict *qdict) { const char *name = qdict_get_try_str(qdict, "name"); - bool has_vcpu = qdict_haskey(qdict, "vcpu"); - int vcpu = qdict_get_try_int(qdict, "vcpu", 0); TraceEventInfoList *events; TraceEventInfoList *elem; Error *local_err = NULL; @@ -89,12 +81,8 @@ void hmp_info_trace_events(Monitor *mon, const QDict *qdict) if (name == NULL) { name = "*"; } - if (vcpu < 0) { - monitor_printf(mon, "argument vcpu must be positive"); - return; - } - events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err); + events = qmp_trace_event_get_state(name, false, 0, &local_err); if (local_err) { error_report_err(local_err); return; |