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perf db-export: Add calls parent_id to enable creation of call trees

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The call_path can be used to find the parent symbol for a call but not
the exact parent call. To do that add parent_id to the call_return
export. This enables the creation of a call tree from the exported data.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lkml.kernel.org/n/tip-6j7tzdxo67cox6kan7k22oo6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2019-02-28 15:00:24 +02:00 • committed by Arnaldo Carvalho de Melo
parent 076333870c
commit f435887ec0
5 changed files with 35 additions and 13 deletions
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8
tools/perf/util/scripting-engines/trace-event-python.c
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@ -1173,7 +1173,7 @@ static int python_export_call_return(struct db_export *dbe,
u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
PyObject *t;
t = tuple_new(11);
t = tuple_new(12);
tuple_set_u64(t, 0, cr->db_id);
tuple_set_u64(t, 1, cr->thread->db_id);
@ -1186,6 +1186,7 @@ static int python_export_call_return(struct db_export *dbe,
tuple_set_u64(t, 8, cr->return_ref);
tuple_set_u64(t, 9, cr->cp->parent->db_id);
tuple_set_s32(t, 10, cr->flags);
tuple_set_u64(t, 11, cr->parent_db_id);
call_object(tables->call_return_handler, t, "call_return_table");
@ -1194,11 +1195,12 @@ static int python_export_call_return(struct db_export *dbe,
return 0;
}
static int python_process_call_return(struct call_return *cr, void *data)
static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
void *data)
{
struct db_export *dbe = data;
return db_export__call_return(dbe, cr);
return db_export__call_return(dbe, cr, parent_db_id);
}
static void python_process_general_event(struct perf_sample *sample,