@@ -269,36 +269,6 @@ Output logs to @var{filename}.
ETEXI
{
- .name = "trace-event",
- .args_type = "name:s,option:b",
- .params = "name on|off",
- .help = "changes status of a specific trace event",
- .mhandler.cmd = do_trace_event_set_state,
- },
-
-STEXI
-@item trace-event
-@findex trace-event
-changes status of a trace event
-ETEXI
-
-#if defined(CONFIG_TRACE_SIMPLE)
- {
- .name = "trace-file",
- .args_type = "op:s?,arg:F?",
- .params = "on|off|flush|set [arg]",
- .help = "open, close, or flush trace file, or set a new file name",
- .mhandler.cmd = do_trace_file,
- },
-
-STEXI
-@item trace-file on|off|flush
-@findex trace-file
-Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed.
-ETEXI
-#endif
-
- {
.name = "log",
.args_type = "items:s",
.params = "item1[,...]",
@@ -1784,10 +1754,5 @@ show the TPM device
ETEXI
STEXI
-@item info trace-events
-show available trace events and their state
-ETEXI
-
-STEXI
@end table
ETEXI
@@ -61,10 +61,6 @@
#include "qemu/osdep.h"
#include "cpu.h"
#include "trace.h"
-#include "trace/control.h"
-#ifdef CONFIG_TRACE_SIMPLE
-#include "trace/simple.h"
-#endif
#include "exec/memory.h"
#include "exec/cpu_ldst.h"
#include "qmp-commands.h"
@@ -882,51 +878,6 @@ static void do_help_cmd(Monitor *mon, const QDict *qdict)
help_cmd(mon, qdict_get_try_str(qdict, "name"));
}
-static void do_trace_event_set_state(Monitor *mon, const QDict *qdict)
-{
- const char *tp_name = qdict_get_str(qdict, "name");
- bool new_state = qdict_get_bool(qdict, "option");
-
- bool found = false;
- TraceEvent *ev = NULL;
- while ((ev = trace_event_pattern(tp_name, ev)) != NULL) {
- found = true;
- if (!trace_event_get_state_static(ev)) {
- monitor_printf(mon, "event \"%s\" is not traceable\n", tp_name);
- } else {
- trace_event_set_state_dynamic(ev, new_state);
- }
- }
- if (!trace_event_is_pattern(tp_name) && !found) {
- monitor_printf(mon, "unknown event name \"%s\"\n", tp_name);
- }
-}
-
-#ifdef CONFIG_TRACE_SIMPLE
-static void do_trace_file(Monitor *mon, const QDict *qdict)
-{
- const char *op = qdict_get_try_str(qdict, "op");
- const char *arg = qdict_get_try_str(qdict, "arg");
-
- if (!op) {
- st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
- } else if (!strcmp(op, "on")) {
- st_set_trace_file_enabled(true);
- } else if (!strcmp(op, "off")) {
- st_set_trace_file_enabled(false);
- } else if (!strcmp(op, "flush")) {
- st_flush_trace_buffer();
- } else if (!strcmp(op, "set")) {
- if (arg) {
- st_set_trace_file(arg);
- }
- } else {
- monitor_printf(mon, "unexpected argument \"%s\"\n", op);
- help_cmd(mon, "trace-file");
- }
-}
-#endif
-
static void user_monitor_complete(void *opaque, QObject *ret_data)
{
MonitorCompletionData *data = (MonitorCompletionData *)opaque;
@@ -1077,11 +1028,6 @@ static void do_info_cpu_stats(Monitor *mon, const QDict *qdict)
cpu_dump_statistics(cpu, (FILE *)mon, &monitor_fprintf, 0);
}
-static void do_trace_print_events(Monitor *mon, const QDict *qdict)
-{
- trace_print_events((FILE *)mon, &monitor_fprintf);
-}
-
static int client_migrate_info(Monitor *mon, const QDict *qdict,
MonitorCompletion cb, void *opaque)
{
@@ -2898,13 +2844,6 @@ static mon_cmd_t info_cmds[] = {
.mhandler.cmd = do_info_roms,
},
{
- .name = "trace-events",
- .args_type = "",
- .params = "",
- .help = "show available trace-events & their state",
- .mhandler.cmd = do_trace_print_events,
- },
- {
.name = "tpm",
.args_type = "",
.params = "",
@@ -11,6 +11,9 @@
# QAPI event definitions
{ 'include': 'qapi/event.json' }
+# Tracing commands
+{ 'include': 'trace/commands.json' }
+
##
# LostTickPolicy:
#
@@ -3753,5 +3753,32 @@ Example:
-> { "execute": "rtc-reset-reinjection" }
<- { "return": {} }
+EQMP
+
+ {
+ .name = "trace-event-get-state",
+ .args_type = "name:s",
+ .mhandler.cmd_new = qmp_marshal_input_trace_event_get_state,
+ },
+
+SQMP
+trace-event-get-state
+---------------------
+
+Query the state of events.
+
+EQMP
+
+ {
+ .name = "trace-event-set-state",
+ .args_type = "name:s,state:b,keepgoing:b?",
+ .mhandler.cmd_new = qmp_marshal_input_trace_event_set_state,
+ },
+
+SQMP
+trace-event-set-state
+---------------------
+
+Set the state of events.
EQMP
@@ -145,3 +145,4 @@ util-obj-$(CONFIG_TRACE_FTRACE) += ftrace.o
util-obj-$(CONFIG_TRACE_UST) += generated-ust.o
util-obj-y += control.o
util-obj-y += generated-tracers.o
+util-obj-y += qmp.o
new file mode 100644
@@ -0,0 +1,44 @@
+# -*- mode: python -*-
+
+##
+# @TraceEventState:
+#
+# State of a tracing event.
+#
+# @name: Event name.
+# @sstatic: Static tracing state.
+# @sdynamic: Dynamic tracing state.
+#
+# Since 2.2
+##
+{ 'type': 'TraceEventState',
+ 'data': {'name': 'str', 'sstatic': 'bool', 'sdynamic': 'bool'} }
+
+##
+# @trace-event-get-state:
+#
+# Query the state of events.
+#
+# @name: Event name pattern.
+#
+# Returns: @TraceEventState of the matched events
+#
+# Since 2.2
+##
+{ 'command': 'trace-event-get-state',
+ 'data': {'name': 'str'},
+ 'returns': ['TraceEventState'] }
+
+##
+# @trace-event-set-state:
+#
+# Set the dynamic state of events.
+#
+# @name: Event name pattern.
+# @state: Dynamic tracing state.
+# @keepgoing: #optional Apply changes even if not all events can be changed.
+#
+# Since 2.2
+##
+{ 'command': 'trace-event-set-state',
+ 'data': {'name': 'str', 'state': 'bool', '*keepgoing': 'bool'} }
@@ -85,19 +85,6 @@ TraceEvent *trace_event_pattern(const char *pat, TraceEvent *ev)
return NULL;
}
-void trace_print_events(FILE *stream, fprintf_function stream_printf)
-{
- TraceEventID i;
-
- for (i = 0; i < trace_event_count(); i++) {
- TraceEvent *ev = trace_event_id(i);
- stream_printf(stream, "%s [Event ID %u] : state %u\n",
- trace_event_get_name(ev), i,
- trace_event_get_state_static(ev) &&
- trace_event_get_state_dynamic(ev));
- }
-}
-
static void trace_init_events(const char *fname)
{
Location loc;
@@ -149,13 +149,6 @@ static void trace_event_set_state_dynamic(TraceEvent *ev, bool state);
/**
- * trace_print_events:
- *
- * Print the state of all events.
- */
-void trace_print_events(FILE *stream, fprintf_function stream_printf);
-
-/**
* trace_init_backends:
* @events: Name of file with events to be enabled at startup; may be NULL.
* Corresponds to commandline option "-trace events=...".
new file mode 100644
@@ -0,0 +1,77 @@
+/*
+ * QMP commands for tracing events.
+ *
+ * Copyright (C) 2014 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.
+ */
+
+#include "qemu/typedefs.h"
+#include "qmp-commands.h"
+#include "trace/control.h"
+
+
+TraceEventStateList *qmp_trace_event_get_state(const char *name, Error **errp)
+{
+ TraceEventStateList dummy = {};
+ TraceEventStateList *prev = &dummy;
+
+ bool found = false;
+ TraceEvent *ev = NULL;
+ while ((ev = trace_event_pattern(name, ev)) != NULL) {
+ found = true;
+ TraceEventStateList *elem = g_malloc0(sizeof(*elem));
+ elem->value = g_malloc0(sizeof(*elem->value));
+ elem->value->name = g_strdup(trace_event_get_name(ev));
+ elem->value->sstatic = trace_event_get_state_static(ev);
+ elem->value->sdynamic = trace_event_get_state_dynamic(ev);
+ prev->next = elem;
+ prev = elem;
+ }
+ if (!found && !trace_event_is_pattern(name)) {
+ error_setg(errp, "unknown event \"%s\"\n", name);
+ }
+
+ return dummy.next;
+}
+
+void qmp_trace_event_set_state(const char *name, bool state, bool has_keepgoing,
+ bool keepgoing, Error **errp)
+{
+ bool error = false;
+ bool found = false;
+ TraceEvent *ev = NULL;
+
+ /* Check all selected events are dynamic */
+ while ((ev = trace_event_pattern(name, ev)) != NULL) {
+ found = true;
+ if (!trace_event_get_state_static(ev)) {
+ error_setg(errp, "cannot set dynamic tracing state for \"%s\"\n",
+ trace_event_get_name(ev));
+ if (!(has_keepgoing && keepgoing)) {
+ error = true;
+ }
+ break;
+ }
+ }
+ if (error) {
+ return;
+ }
+ if (!found && !trace_event_is_pattern(name)) {
+ error_setg(errp, "unknown event \"%s\"\n", name);
+ return;
+ }
+
+ if (error) {
+ return;
+ }
+
+ /* Apply changes */
+ ev = NULL;
+ while ((ev = trace_event_pattern(name, ev)) != NULL) {
+ if (trace_event_get_state_static(ev)) {
+ trace_event_set_state_dynamic(ev, state);
+ }
+ }
+}
@@ -277,7 +277,7 @@ void trace_record_finish(TraceBufferRecord *rec)
}
}
-void st_set_trace_file_enabled(bool enable)
+static void st_set_trace_file_enabled(bool enable)
{
if (enable == !!trace_fp) {
return; /* no change */
@@ -322,7 +322,7 @@ void st_set_trace_file_enabled(bool enable)
* @file The trace file name or NULL for the default name-<pid> set at
* config time
*/
-bool st_set_trace_file(const char *file)
+static bool st_set_trace_file(const char *file)
{
st_set_trace_file_enabled(false);
@@ -338,12 +338,6 @@ bool st_set_trace_file(const char *file)
return true;
}
-void st_print_trace_file_status(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...))
-{
- stream_printf(stream, "Trace file \"%s\" %s.\n",
- trace_file_name, trace_fp ? "on" : "off");
-}
-
void st_flush_trace_buffer(void)
{
flush_trace_file(true);
@@ -18,9 +18,6 @@
#include "trace/generated-events.h"
-void st_print_trace_file_status(FILE *stream, fprintf_function stream_printf);
-void st_set_trace_file_enabled(bool enable);
-bool st_set_trace_file(const char *file);
bool st_init(const char *file);
void st_flush_trace_buffer(void);
Also removes old "trace-event", "trace-file" and "info trace-events" HMP commands. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> --- hmp-commands.hx | 35 ----------------------- monitor.c | 61 ---------------------------------------- qapi-schema.json | 3 ++ qmp-commands.hx | 27 ++++++++++++++++++ trace/Makefile.objs | 1 + trace/commands.json | 44 +++++++++++++++++++++++++++++ trace/control.c | 13 --------- trace/control.h | 7 ----- trace/qmp.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++ trace/simple.c | 10 +------ trace/simple.h | 3 -- 11 files changed, 154 insertions(+), 127 deletions(-) create mode 100644 trace/commands.json create mode 100644 trace/qmp.c