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>

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index c5dc1ad..3a0ff7f 100644 (file)
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -394,6 +394,8 @@ ifeq ($(ARCH),x86)
 LIB_OBJS += $(OUTPUT)tests/perf-time-to-tsc.o
 endif
 LIB_OBJS += $(OUTPUT)tests/code-reading.o
+LIB_OBJS += $(OUTPUT)tests/sample-parsing.o
+LIB_OBJS += $(OUTPUT)tests/parse-no-sample-id-all.o
 
 BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
 BUILTIN_OBJS += $(OUTPUT)builtin-bench.o
@@ -439,7 +441,6 @@ PERFLIBS = $(LIB_FILE) $(LIBLK) $(LIBTRACEEVENT)
 ifneq ($(OUTPUT),)
   CFLAGS += -I$(OUTPUT)
 endif
-LIB_OBJS += $(OUTPUT)tests/sample-parsing.o
 
 ifdef NO_LIBELF
 EXTLIBS := $(filter-out -lelf,$(EXTLIBS))

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 8bbeba3..1e67437 100644 (file)
--- 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 (file)
index 0000000..e117b6c
--- /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 c048b58..e0ac713 100644 (file)
--- 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 */