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trace/simple: add st_init_group 

Add helper function and call it for each trace event group added.
Makes sure that events added at module load time are initialized
properly.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20210601132414.432430-6-kraxel@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
master
Gerd Hoffmann 2021-06-01 15:24:06 +02:00 committed by Stefan Hajnoczi
parent 3f2a09842f
commit 263b6e9644
3 changed files with 17 additions and 0 deletions
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4
trace/control.c
View File

@ -82,6 +82,10 @@ void trace_event_register_group(TraceEvent **events)
event_groups = g_renew(TraceEventGroup, event_groups, nevent_groups + 1);
event_groups[nevent_groups].events = events;
nevent_groups++;
#ifdef CONFIG_TRACE_SIMPLE
st_init_group(nevent_groups - 1);
#endif
}

12
trace/simple.c
View File

@ -422,3 +422,15 @@ bool st_init(void)
atexit(st_flush_trace_buffer);
return true;
}
void st_init_group(size_t group)
{
TraceEventIter iter;
if (!trace_writeout_enabled) {
return;
}
trace_event_iter_init_group(&iter, group);
st_write_event_mapping(&iter);
}

1
trace/simple.h
View File

@ -15,6 +15,7 @@ void st_print_trace_file_status(void);
bool st_set_trace_file_enabled(bool enable);
void st_set_trace_file(const char *file);
bool st_init(void);
void st_init_group(size_t group);
void st_flush_trace_buffer(void);
typedef struct {