Command perf record calls
cmd_report
+---> record__auxtrace_init
+---> auxtrace_record__init()
On s390 function auxtrace_record__init() returns random return
value due to missing initialization.
This sometime causes perf record to exit immediately without
error message and creating a perf.data file.
Fix this by setting error return code to zero before return
from platform specific function which does not set the
error code in call cases.
Signed-off-by: Thomas Richter <[email protected]>
---
tools/perf/arch/s390/util/auxtrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/arch/s390/util/auxtrace.c
b/tools/perf/arch/s390/util/auxtrace.c
index 6cb48e4cffd9..3afe8256eff2 100644
--- a/tools/perf/arch/s390/util/auxtrace.c
+++ b/tools/perf/arch/s390/util/auxtrace.c
@@ -87,6 +87,7 @@ struct auxtrace_record *auxtrace_record__init(struct
perf_evlist *evlist,
struct perf_evsel *pos;
int diagnose = 0;
+ *err = 0;
if (evlist->nr_entries == 0)
return NULL;
--
2.14.3
