提交 9ab1f508 编写于 作者: K Kan Liang 提交者: Arnaldo Carvalho de Melo

perf diff: Add missing hists__init() call at tool start

It also uses hists/hist_entries, hists__init() should be called before
creating any evsels.

Otherwise no extra space will be allocated per perf_evsel nor this space
will be initialized when allocating a new perf_evsel instance, resulting
in reads/writes to non allocated space, oops. Fix it.
Signed-off-by: NKan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1414004561-22096-1-git-send-email-kan.liang@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
上级 3b10ea7f
...@@ -1142,6 +1142,11 @@ static int data_init(int argc, const char **argv) ...@@ -1142,6 +1142,11 @@ static int data_init(int argc, const char **argv)
int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
{ {
int ret = hists__init();
if (ret < 0)
return ret;
perf_config(perf_default_config, NULL); perf_config(perf_default_config, NULL);
argc = parse_options(argc, argv, options, diff_usage, 0); argc = parse_options(argc, argv, options, diff_usage, 0);
......
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