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authorThomas Richter <tmricht@linux.ibm.com>2018-04-23 16:29:40 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-04-23 12:05:02 -0300
commit5d9946c3e5e38e07ab7019db9413a96807a325f2 (patch)
tree37f1fab81141027f034e876da3541ba013ee6ecc /tools/perf/arch
parent3138a2ef62667b6ac8eb5fb33a9e0b84ec3ab165 (diff)
downloadlinux-5d9946c3e5e38e07ab7019db9413a96807a325f2.tar.bz2
perf record: Fix s390 undefined record__auxtrace_init() return value
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 the return code to zero before returning from platform specific functions which may not set the error code in call cases. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180423142940.21143-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
-rw-r--r--tools/perf/arch/s390/util/auxtrace.c1
1 files changed, 1 insertions, 0 deletions
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;