perf evsel: Add has_callchain() helper to make code more compact/clear

Its common to have the (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN),
so add an evsel__has_callchain(evsel) helper.

This will actually get more uses as we check that instead of
symbol_conf.use_callchain in places where that produces the same result
but makes this decision to be more fine grained, per evsel.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-145340oytbthatpfeaq1do18@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 4dfdee668b0c..97f9e755e8e6 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -2933,8 +2933,7 @@ static int timehist_check_attr(struct perf_sched *sched,
                         return -1;
                 }
 
-                if (sched->show_callchain &&
-                    !(evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN)) {
+                if (sched->show_callchain && !evsel__has_callchain(evsel)) {
                         pr_info("Samples do not have callchains.\n");
                         sched->show_callchain = 0;
                         symbol_conf.use_callchain = 0;