perf test: Soft errors shouldn't stop the "Validate PERF_RECORD_" test

For errors that don't preclude checking for further errors, aka "soft"
errors, just  continue testing for other errors.

Better coverage in verbose mode.

Suggested-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-jafcokbj26m845dsgm2hx6az@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 21 insertions, 24 deletions

diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index f1e36110b10..6173f780dce 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -903,7 +903,7 @@ static int test__PERF_RECORD(void)
              found_libc_mmap = false,
              found_vdso_mmap = false,
              found_ld_mmap = false;
-        int err = -1, i, wakeups = 0, sample_size;
+        int err = -1, errs = 0, i, wakeups = 0, sample_size;
         u32 cpu;
         int total_events = 0, nr_events[PERF_RECORD_MAX] = { 0, };
 
@@ -1012,8 +1012,6 @@ static int test__PERF_RECORD(void)
          */
         perf_evlist__start_workload(evlist);
 
-        err = -1;
-
         while (1) {
                 int before = total_events;
 
@@ -1028,9 +1026,10 @@ static int test__PERF_RECORD(void)
                                 if (type < PERF_RECORD_MAX)
                                         nr_events[type]++;
 
-                                if (perf_event__parse_sample(event, sample_type,
-                                                             sample_size, true,
-                                                             &sample, false) < 0) {
+                                err = perf_event__parse_sample(event, sample_type,
+                                                               sample_size, true,
+                                                               &sample, false);
+                                if (err < 0) {
                                         if (verbose)
                                                 perf_event__fprintf(event, stderr);
                                         pr_debug("Couldn't parse sample\n");
@@ -1045,7 +1044,7 @@ static int test__PERF_RECORD(void)
                                 if (prev_time > sample.time) {
                                         pr_debug("%s going backwards in time, prev=%" PRIu64 ", curr=%" PRIu64 "\n",
                                                  name, prev_time, sample.time);
-                                        goto out_err;
+                                        ++errs;
                                 }
 
                                 prev_time = sample.time;
@@ -1053,19 +1052,19 @@ static int test__PERF_RECORD(void)
                                 if (sample.cpu != cpu) {
                                         pr_debug("%s with unexpected cpu, expected %d, got %d\n",
                                                  name, cpu, sample.cpu);
-                                        goto out_err;
+                                        ++errs;
                                 }
 
                                 if ((pid_t)sample.pid != evlist->workload.pid) {
                                         pr_debug("%s with unexpected pid, expected %d, got %d\n",
                                                  name, evlist->workload.pid, sample.pid);
-                                        goto out_err;
+                                        ++errs;
                                 }
 
                                 if ((pid_t)sample.tid != evlist->workload.pid) {
                                         pr_debug("%s with unexpected tid, expected %d, got %d\n",
                                                  name, evlist->workload.pid, sample.tid);
-                                        goto out_err;
+                                        ++errs;
                                 }
 
                                 if ((type == PERF_RECORD_COMM ||
@@ -1074,21 +1073,21 @@ static int test__PERF_RECORD(void)
                                      type == PERF_RECORD_EXIT) &&
                                      (pid_t)event->comm.pid != evlist->workload.pid) {
                                         pr_debug("%s with unexpected pid/tid\n", name);
-                                        goto out_err;
+                                        ++errs;
                                 }
 
                                 if ((type == PERF_RECORD_COMM ||
                                      type == PERF_RECORD_MMAP) &&
                                      event->comm.pid != event->comm.tid) {
                                         pr_debug("%s with different pid/tid!\n", name);
-                                        goto out_err;
+                                        ++errs;
                                 }
 
                                 switch (type) {
                                 case PERF_RECORD_COMM:
                                         if (strcmp(event->comm.comm, cmd)) {
                                                 pr_debug("%s with unexpected comm!\n", name);
-                                                goto out_err;
+                                                ++errs;
                                         }
                                         break;
                                 case PERF_RECORD_EXIT:
@@ -1112,7 +1111,7 @@ static int test__PERF_RECORD(void)
                                 default:
                                         pr_debug("Unexpected perf_event->header.type %d!\n",
                                                  type);
-                                        goto out_err;
+                                        ++errs;
                                 }
                         }
                 }
@@ -1128,42 +1127,40 @@ static int test__PERF_RECORD(void)
                 sleep(1);
                 if (++wakeups > 5) {
                         pr_debug("No PERF_RECORD_EXIT event!\n");
-                        goto out_err;
+                        break;
                 }
         }
 
 found_exit:
         if (nr_events[PERF_RECORD_COMM] > 1) {
                 pr_debug("Excessive number of PERF_RECORD_COMM events!\n");
-                goto out_err;
+                ++errs;
         }
 
         if (nr_events[PERF_RECORD_COMM] == 0) {
                 pr_debug("Missing PERF_RECORD_COMM for %s!\n", cmd);
-                goto out_err;
+                ++errs;
         }
 
         if (!found_cmd_mmap) {
                 pr_debug("PERF_RECORD_MMAP for %s missing!\n", cmd);
-                goto out_err;
+                ++errs;
         }
 
         if (!found_libc_mmap) {
                 pr_debug("PERF_RECORD_MMAP for %s missing!\n", "libc");
-                goto out_err;
+                ++errs;
         }
 
         if (!found_ld_mmap) {
                 pr_debug("PERF_RECORD_MMAP for %s missing!\n", "ld");
-                goto out_err;
+                ++errs;
         }
 
         if (!found_vdso_mmap) {
                 pr_debug("PERF_RECORD_MMAP for %s missing!\n", "[vdso]");
-                goto out_err;
+                ++errs;
         }
-
-        err = 0;
 out_err:
         perf_evlist__munmap(evlist);
 out_free_cpu_mask:
@@ -1171,7 +1168,7 @@ out_free_cpu_mask:
 out_delete_evlist:
         perf_evlist__delete(evlist);
 out:
-        return err;
+        return (err < 0 || errs > 0) ? -1 : 0;
 }
 
 static struct test {