1 files changed, 8 insertions, 2 deletions

diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 313a48c6b2bc..afc9ad0a0515 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -439,7 +439,7 @@ static int do_test_code_reading(bool try_kcore)
                 .mmap_pages          = UINT_MAX,
                 .user_freq           = UINT_MAX,
                 .user_interval       = ULLONG_MAX,
-                .freq                = 4000,
+                .freq                = 500,
                 .target              = {
                         .uses_mmap   = true,
                 },
@@ -559,7 +559,13 @@ static int do_test_code_reading(bool try_kcore)
                                 evlist = NULL;
                                 continue;
                         }
-                        pr_debug("perf_evlist__open failed\n");
+
+                        if (verbose) {
+                                char errbuf[512];
+                                perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
+                                pr_debug("perf_evlist__open() failed!\n%s\n", errbuf);
+                        }
+
                         goto out_put;
                 }
                 break;