perf tools: Add test for parsing with no sample_id_all bit

Add a test for parsing a non-sample event when there is more than one
selected event but no sample_id_all bit set.

The test fails because of a bug in the evlist logic.  That is fixed in a
separate patch.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1378325897-3840-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 113 insertions, 0 deletions

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 8bbeba322df9..1e67437fb4ca 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -112,6 +112,10 @@ static struct test {
                 .func = test__keep_tracking,
         },
         {
+                .desc = "Test parsing with no sample_id_all bit set",
+                .func = test__parse_no_sample_id_all,
+        },
+        {
                 .func = NULL,
         },
 };
diff --git a/tools/perf/tests/parse-no-sample-id-all.c b/tools/perf/tests/parse-no-sample-id-all.c
new file mode 100644
index 000000000000..e117b6c6a248
--- /dev/null
+++ b/tools/perf/tests/parse-no-sample-id-all.c
@@ -0,0 +1,108 @@
+#include <sys/types.h>
+#include <stddef.h>
+
+#include "tests.h"
+
+#include "event.h"
+#include "evlist.h"
+#include "header.h"
+#include "util.h"
+
+static int process_event(struct perf_evlist **pevlist, union perf_event *event)
+{
+        struct perf_sample sample;
+
+        if (event->header.type == PERF_RECORD_HEADER_ATTR) {
+                if (perf_event__process_attr(NULL, event, pevlist)) {
+                        pr_debug("perf_event__process_attr failed\n");
+                        return -1;
+                }
+                return 0;
+        }
+
+        if (event->header.type >= PERF_RECORD_USER_TYPE_START)
+                return -1;
+
+        if (!*pevlist)
+                return -1;
+
+        if (perf_evlist__parse_sample(*pevlist, event, &sample)) {
+                pr_debug("perf_evlist__parse_sample failed\n");
+                return -1;
+        }
+
+        return 0;
+}
+
+static int process_events(union perf_event **events, size_t count)
+{
+        struct perf_evlist *evlist = NULL;
+        int err = 0;
+        size_t i;
+
+        for (i = 0; i < count && !err; i++)
+                err = process_event(&evlist, events[i]);
+
+        if (evlist)
+                perf_evlist__delete(evlist);
+
+        return err;
+}
+
+struct test_attr_event {
+        struct attr_event attr;
+        u64 id;
+};
+
+/**
+ * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set.
+ *
+ * This function tests parsing data produced on kernel's that do not support the
+ * sample_id_all bit.  Without the sample_id_all bit, non-sample events (such as
+ * mmap events) do not have an id sample appended, and consequently logic
+ * designed to determine the id will not work.  That case happens when there is
+ * more than one selected event, so this test processes three events: 2
+ * attributes representing the selected events and one mmap event.
+ *
+ * Return: %0 on success, %-1 if the test fails.
+ */
+int test__parse_no_sample_id_all(void)
+{
+        int err;
+
+        struct test_attr_event event1 = {
+                .attr = {
+                        .header = {
+                                .type = PERF_RECORD_HEADER_ATTR,
+                                .size = sizeof(struct test_attr_event),
+                        },
+                },
+                .id = 1,
+        };
+        struct test_attr_event event2 = {
+                .attr = {
+                        .header = {
+                                .type = PERF_RECORD_HEADER_ATTR,
+                                .size = sizeof(struct test_attr_event),
+                        },
+                },
+                .id = 2,
+        };
+        struct mmap_event event3 = {
+                .header = {
+                        .type = PERF_RECORD_MMAP,
+                        .size = sizeof(struct mmap_event),
+                },
+        };
+        union perf_event *events[] = {
+                (union perf_event *)&event1,
+                (union perf_event *)&event2,
+                (union perf_event *)&event3,
+        };
+
+        err = process_events(events, ARRAY_SIZE(events));
+        if (err)
+                return -1;
+
+        return 0;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index c048b589998a..e0ac713857ba 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -39,5 +39,6 @@ int test__perf_time_to_tsc(void);
 int test__code_reading(void);
 int test__sample_parsing(void);
 int test__keep_tracking(void);
+int test__parse_no_sample_id_all(void);
 
 #endif /* TESTS_H */