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perf trace: Drop addr_location refcounts 

When we use machine__resolve() we grab a reference to
addr_location.thread (and in the future to other elements there) via
machine__findnew_thread(), so we must pair that with
addr_location__put(), else we'll never drop that thread when it exits
and no other remaining data structures have pointers to it. Fix it.

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-ivg9hifzeuokb1f5jxc2wob4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
hifive-unleashed-5.1
Arnaldo Carvalho de Melo 2018-10-20 09:18:50 -03:00
parent b7e8452b86
commit 4291bf5cb9
1 changed files with 5 additions and 3 deletions
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8
tools/perf/builtin-trace.c
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@ -1814,12 +1814,14 @@ static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evse
int max_stack = evsel->attr.sample_max_stack ?
evsel->attr.sample_max_stack :
trace->max_stack;
int err;
if (machine__resolve(trace->host, &al, sample) < 0 ||
thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, max_stack))
if (machine__resolve(trace->host, &al, sample) < 0)
return -1;
return 0;
err = thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, max_stack);
addr_location__put(&al);
return err;
}
static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)