mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-07-08 20:17:27 +00:00
trace: add "-trace help"
Print a list of trace points Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-id: 1452174932-28657-7-git-send-email-den@openvz.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
parent
10578a257d
commit
e9527dd399
|
@ -3564,6 +3564,8 @@ available if QEMU has been compiled with the @var{simple}, @var{stderr}
|
|||
or @var{ftrace} tracing backend. To specify multiple events or patterns,
|
||||
specify the @option{-trace} option multiple times.
|
||||
|
||||
Use @code{-trace help} to print a list of names of trace points.
|
||||
|
||||
@item events=@var{file}
|
||||
Immediately enable events listed in @var{file}.
|
||||
The file must contain one event name (as listed in the @file{trace-events} file)
|
||||
|
|
|
@ -88,7 +88,16 @@ TraceEvent *trace_event_pattern(const char *pat, TraceEvent *ev)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
void trace_enable_events(const char *line_buf)
|
||||
void trace_list_events(void)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < trace_event_count(); i++) {
|
||||
TraceEvent *res = trace_event_id(i);
|
||||
fprintf(stderr, "%s\n", trace_event_get_name(res));
|
||||
}
|
||||
}
|
||||
|
||||
static void do_trace_enable_events(const char *line_buf)
|
||||
{
|
||||
const bool enable = ('-' != line_buf[0]);
|
||||
const char *line_ptr = enable ? line_buf : line_buf + 1;
|
||||
|
@ -114,6 +123,16 @@ void trace_enable_events(const char *line_buf)
|
|||
}
|
||||
}
|
||||
|
||||
void trace_enable_events(const char *line_buf)
|
||||
{
|
||||
if (is_help_option(line_buf)) {
|
||||
trace_list_events();
|
||||
exit(0);
|
||||
} else {
|
||||
do_trace_enable_events(line_buf);
|
||||
}
|
||||
}
|
||||
|
||||
void trace_init_events(const char *fname)
|
||||
{
|
||||
Location loc;
|
||||
|
|
|
@ -181,6 +181,13 @@ void trace_init_events(const char *file);
|
|||
*/
|
||||
void trace_init_file(const char *file);
|
||||
|
||||
/**
|
||||
* trace_list_events:
|
||||
*
|
||||
* List all available events.
|
||||
*/
|
||||
void trace_list_events(void);
|
||||
|
||||
/**
|
||||
* trace_enable_events:
|
||||
* @line_buf: A string with a glob pattern of events to be enabled or,
|
||||
|
|
Loading…
Reference in New Issue
Block a user