libperf: Keep count of failed tests

Keep the count of failed tests, so we get better output with failures,
like:

  # make tests
  ...
  running static:
  - running test-cpumap.c...OK
  - running test-threadmap.c...OK
  - running test-evlist.c...FAILED test-evlist.c:53 failed to create evsel2
  FAILED test-evlist.c:163 failed to create evsel2
  FAILED test-evlist.c:287 failed count
    FAILED (3)
  - running test-evsel.c...OK
  running dynamic:
  - running test-cpumap.c...OK
  - running test-threadmap.c...OK
  - running test-evlist.c...FAILED test-evlist.c:53 failed to create evsel2
  FAILED test-evlist.c:163 failed to create evsel2
  FAILED test-evlist.c:287 failed count
    FAILED (3)
  - running test-evsel.c...OK
 ...
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20191017105918.20873-9-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/lib/include/internal/tests.h

@@ -4,14 +4,28 @@
 
 #include <stdio.h>
 
-#define __T_START fprintf(stdout, "- running %s...", __FILE__)
-#define __T_OK    fprintf(stdout, "OK\n")
-#define __T_FAIL  fprintf(stdout, "FAIL\n")
+int tests_failed;
+
+#define __T_START					\
+do {							\
+	fprintf(stdout, "- running %s...", __FILE__);	\
+	fflush(NULL);					\
+	tests_failed = 0;				\
+} while (0)
+
+#define __T_END								\
+do {									\
+	if (tests_failed)						\
+		fprintf(stdout, "  FAILED (%d)\n", tests_failed);	\
+	else								\
+		fprintf(stdout, "OK\n");				\
+} while (0)
 
 #define __T(text, cond)                                                          \
 do {                                                                             \
 	if (!(cond)) {                                                           \
 		fprintf(stderr, "FAILED %s:%d %s\n", __FILE__, __LINE__, text);  \
+		tests_failed++;                                                  \
 		return -1;                                                       \
 	}                                                                        \
 } while (0)

tools/perf/lib/tests/test-cpumap.c

@@ -26,6 +26,6 @@ int main(int argc, char **argv)
 	perf_cpu_map__put(cpus);
 	perf_cpu_map__put(cpus);
 
-	__T_OK;
+	__T_END;
 	return 0;
 }

tools/perf/lib/tests/test-evlist.c

@@ -408,6 +408,6 @@ int main(int argc, char **argv)
 	test_mmap_thread();
 	test_mmap_cpus();
 
-	__T_OK;
+	__T_END;
 	return 0;
 }

tools/perf/lib/tests/test-evsel.c

@@ -130,6 +130,6 @@ int main(int argc, char **argv)
 	test_stat_thread();
 	test_stat_thread_enable();
 
-	__T_OK;
+	__T_END;
 	return 0;
 }

tools/perf/lib/tests/test-threadmap.c

@@ -26,6 +26,6 @@ int main(int argc, char **argv)
 	perf_thread_map__put(threads);
 	perf_thread_map__put(threads);
 
-	__T_OK;
+	__T_END;
 	return 0;
 }