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trace: Allow event name pattern in "info trace-events" 

Homogenizes the command capabilities with QMP.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Lluís Vilanova 2016-07-11 12:53:51 +02:00 committed by Stefan Hajnoczi
parent 40b9cd25f7
commit bd71211d55
3 changed files with 36 additions and 4 deletions
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8
hmp-commands-info.hx
View File

@ -646,10 +646,12 @@ ETEXI
{ {
.name = "trace-events", .name = "trace-events",
.args_type = "", .args_type = "name:s?",
.params = "", .params = "[name]",
.help = "show available trace-events & their state", .help = "show available trace-events & their state "
"(name: event name pattern)",
.mhandler.cmd = hmp_info_trace_events, .mhandler.cmd = hmp_info_trace_events,
.command_completion = info_trace_events_completion,
}, },
STEXI STEXI

1
hmp.h
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@ -115,6 +115,7 @@ void set_link_completion(ReadLineState *rs, int nb_args, const char *str);
void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str); void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str);
void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str); void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str);
void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str); void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str);
void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str);
void trace_event_completion(ReadLineState *rs, int nb_args, const char *str); void trace_event_completion(ReadLineState *rs, int nb_args, const char *str);
void watchdog_action_completion(ReadLineState *rs, int nb_args, void watchdog_action_completion(ReadLineState *rs, int nb_args,
const char *str); const char *str);

31
monitor.c
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@ -1065,8 +1065,20 @@ static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
static void hmp_info_trace_events(Monitor *mon, const QDict *qdict) static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
{ {
TraceEventInfoList *events = qmp_trace_event_get_state("*", NULL); const char *name = qdict_get_try_str(qdict, "name");
TraceEventInfoList *events;
TraceEventInfoList *elem; TraceEventInfoList *elem;
Error *local_err = NULL;
if (name == NULL) {
name = "*";
}
events = qmp_trace_event_get_state(name, &local_err);
if (local_err) {
error_report_err(local_err);
return;
}
for (elem = events; elem != NULL; elem = elem->next) { for (elem = events; elem != NULL; elem = elem->next) {
monitor_printf(mon, "%s : state %u\n", monitor_printf(mon, "%s : state %u\n",
@ -3296,6 +3308,23 @@ void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
} }
} }
void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
{
size_t len;
len = strlen(str);
readline_set_completion_index(rs, len);
if (nb_args == 2) {
TraceEventID id;
for (id = 0; id < trace_event_count(); id++) {
const char *event_name = trace_event_get_name(trace_event_id(id));
if (!strncmp(str, event_name, len)) {
readline_add_completion(rs, event_name);
}
}
}
}
void trace_event_completion(ReadLineState *rs, int nb_args, const char *str) void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
{ {
size_t len; size_t len;