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89aafcf2a7
Now we no longer have any events that are for vcpus we can start excising the code from the trace control. As the vcpu parameter is encoded as part of QMP we just stub out the has_vcpu/vcpu parameters rather than alter the API. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20230526165401.574474-8-alex.bennee@linaro.org Message-Id: <20230524133952.3971948-7-alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/*
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* QMP commands for tracing events.
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*
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* Copyright (C) 2014-2016 Lluís Vilanova <vilanova@ac.upc.edu>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-trace.h"
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#include "control-vcpu.h"
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static bool check_events(bool ignore_unavailable, bool is_pattern,
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const char *name, Error **errp)
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{
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if (!is_pattern) {
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TraceEvent *ev = trace_event_name(name);
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/* error for non-existing event */
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if (ev == NULL) {
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error_setg(errp, "unknown event \"%s\"", name);
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return false;
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}
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/* error for unavailable event */
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if (!ignore_unavailable && !trace_event_get_state_static(ev)) {
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error_setg(errp, "event \"%s\" is disabled", name);
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return false;
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}
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return true;
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} else {
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/* error for unavailable events */
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TraceEventIter iter;
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TraceEvent *ev;
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trace_event_iter_init_pattern(&iter, name);
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while ((ev = trace_event_iter_next(&iter)) != NULL) {
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if (!ignore_unavailable && !trace_event_get_state_static(ev)) {
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error_setg(errp, "event \"%s\" is disabled", trace_event_get_name(ev));
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return false;
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}
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}
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return true;
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}
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}
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TraceEventInfoList *qmp_trace_event_get_state(const char *name,
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bool has_vcpu, int64_t vcpu,
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Error **errp)
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{
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TraceEventInfoList *events = NULL;
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TraceEventIter iter;
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TraceEvent *ev;
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bool is_pattern = trace_event_is_pattern(name);
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/* Check events */
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if (!check_events(true, is_pattern, name, errp)) {
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return NULL;
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}
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/* Get states (all errors checked above) */
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trace_event_iter_init_pattern(&iter, name);
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while ((ev = trace_event_iter_next(&iter)) != NULL) {
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TraceEventInfo *value;
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value = g_new(TraceEventInfo, 1);
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value->name = g_strdup(trace_event_get_name(ev));
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if (!trace_event_get_state_static(ev)) {
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value->state = TRACE_EVENT_STATE_UNAVAILABLE;
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} else {
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if (trace_event_get_state_dynamic(ev)) {
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value->state = TRACE_EVENT_STATE_ENABLED;
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} else {
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value->state = TRACE_EVENT_STATE_DISABLED;
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}
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}
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QAPI_LIST_PREPEND(events, value);
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}
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return events;
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}
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void qmp_trace_event_set_state(const char *name, bool enable,
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bool has_ignore_unavailable, bool ignore_unavailable,
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bool has_vcpu, int64_t vcpu,
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Error **errp)
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{
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TraceEventIter iter;
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TraceEvent *ev;
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bool is_pattern = trace_event_is_pattern(name);
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/* Check events */
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if (!check_events(has_ignore_unavailable && ignore_unavailable,
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is_pattern, name, errp)) {
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return;
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}
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/* Apply changes (all errors checked above) */
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trace_event_iter_init_pattern(&iter, name);
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while ((ev = trace_event_iter_next(&iter)) != NULL) {
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if (!trace_event_get_state_static(ev)) {
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continue;
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}
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trace_event_set_state_dynamic(ev, enable);
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}
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}
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