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perf script: Check if evsel has callchains before trying to use it 

We were checking just if callchain processing was asked for by the
user, not if the evsel itself has callchains, and since we can have
some evsels with callchains and others without, check that.

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-inxl7k49q9f9w1se039fbxuw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-06-04 10:34:20 -03:00
parent 27de9b2bd9
commit b879833cba
1 changed files with 1 additions and 1 deletions
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2
tools/perf/builtin-script.c
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@ -606,7 +606,7 @@ static int perf_sample__fprintf_start(struct perf_sample *sample,
if (PRINT_FIELD(COMM)) {
if (latency_format)
printed += fprintf(fp, "%8.8s ", thread__comm_str(thread));
else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
else if (PRINT_FIELD(IP) && evsel__has_callchain(evsel) && symbol_conf.use_callchain)
printed += fprintf(fp, "%s ", thread__comm_str(thread));
else
printed += fprintf(fp, "%16s ", thread__comm_str(thread));