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perf callchain: Setup callchain properly in pipe mode

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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>
This commit is contained in:
Jiri Olsa 2020-05-07 11:50:23 +02:00 • committed by Arnaldo Carvalho de Melo
parent 14d3d54052
commit 0d71a2b242
4 changed files with 49 additions and 13 deletions
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14
tools/perf/builtin-script.c
View file

@ -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,