perf tests: Use ARRAY_SIZE() were applicable

We were using a homebrew equivalent, use the macro that is used
everywhere for this function.

Acked-by: Jiri Olsa <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Frederic Weisbecker <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Mike Galbraith <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Link: http://lkml.kernel.org/n/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/tests/pmu.c

···
 	{ "krava23", "config2:28-29,38\n", },
 };
 
-#define TEST_FORMATS_CNT (sizeof(test_formats) / sizeof(struct test_format))
-
 /* Simulated users input. */
 static struct parse_events_term test_terms[] = {
 	{
···
 		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
 	},
 };
-#define TERMS_CNT (sizeof(test_terms) / sizeof(struct parse_events_term))
 
 /*
  * Prepare format directory data, exported by kernel
···
 	if (!mkdtemp(dir))
 		return NULL;
 
-	for (i = 0; i < TEST_FORMATS_CNT; i++) {
+	for (i = 0; i < ARRAY_SIZE(test_formats); i++) {
 		static char name[PATH_MAX];
 		struct test_format *format = &test_formats[i];
 		FILE *file;
···
 	static LIST_HEAD(terms);
 	unsigned int i;
 
-	for (i = 0; i < TERMS_CNT; i++)
+	for (i = 0; i < ARRAY_SIZE(test_terms); i++)
 		list_add_tail(&test_terms[i].list, &terms);
 
 	return &terms;
 }
-
-#undef TERMS_CNT
 
 int test__pmu(void)
 {