333df1c6c7
Now we no longer have vcpu controlled trace events we can excise the code that allows us to query its status. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> 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: 20230526165401.574474-9-alex.bennee@linaro.org Message-Id: <20230524133952.3971948-8-alex.bennee@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
111 lines
3.3 KiB
C
111 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.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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