perf callchain: Setup callchain properly in pipe mode
Callchains are automatically initialized by checking on event's
sample_type. For pipe mode we need to put this check into attr event
code.
Moving the callchains setup code into callchain_param_setup function and
calling it from attr event process code.
This enables pipe output having callchains, like:
# perf record -g -e 'raw_syscalls:sys_enter' true | perf script
# perf record -g -e 'raw_syscalls:sys_enter' true | perf report
Committer notes:
We still need the next patch for the above output to work.
Reported-by: Paul Khuong <pvk@pvk.ca>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200507095024.2789147-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 56d7bcd..5c4a580 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -2085,6 +2085,7 @@ static int process_attr(struct perf_tool *tool, union perf_event *event,
struct perf_script *scr = container_of(tool, struct perf_script, tool);
struct evlist *evlist;
struct evsel *evsel, *pos;
+ u64 sample_type;
int err;
static struct evsel_script *es;
@@ -2119,10 +2120,19 @@ static int process_attr(struct perf_tool *tool, union perf_event *event,
set_print_ip_opts(&evsel->core.attr);
- if (evsel->core.attr.sample_type)
+ if (evsel->core.attr.sample_type) {
err = perf_evsel__check_attr(evsel, scr->session);
+ if (err)
+ return err;
+ }
- return err;
+ /*
+ * Check if we need to enable callchains based
+ * on events sample_type.
+ */
+ sample_type = perf_evlist__combined_sample_type(evlist);
+ callchain_param_setup(sample_type);
+ return 0;
}
static int print_event_with_time(struct perf_tool *tool,