[PATCH 1/3] perf tests: Introduce iterator function for tests

[Matt Fleming]

From: Matt Fleming <matt.flem...@intel.com>

In preparation for introducing more arrays of tests, e.g. "arch tests"
(architecture-specific tests), abstract the code to iterate over the
list of tests into a helper function.

This way, code that uses a 'struct test' doesn't need to worry about
how the tests are grouped together and changes to the list of tests
doesn't require changes to the code using it.

Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Matt Fleming <matt.flem...@intel.com>
---
 tools/perf/tests/builtin-test.c | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 136cd934be66..8cf0601d1662 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -183,7 +183,7 @@ static struct test {
        },
 };
 
-static bool perf_test__matches(int curr, int argc, const char *argv[])
+static bool perf_test__matches(struct test *test, int curr, int argc, const 
char *argv[])
 {
        int i;
 
@@ -200,7 +200,7 @@ static bool perf_test__matches(int curr, int argc, const 
char *argv[])
                        continue;
                }
 
-               if (strstr(tests[curr].desc, argv[i]))
+               if (strstr(test->desc, argv[i]))
                        return true;
        }
 
@@ -237,27 +237,28 @@ static int run_test(struct test *test)
        return err;
 }
 
+#define for_each_test(t)        for (t = &tests[0]; t->func; t++)
+
 static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
 {
+       struct test *t;
        int i = 0;
        int width = 0;
 
-       while (tests[i].func) {
-               int len = strlen(tests[i].desc);
+       for_each_test(t) {
+               int len = strlen(t->desc);
 
                if (width < len)
                        width = len;
-               ++i;
        }
 
-       i = 0;
-       while (tests[i].func) {
+       for_each_test(t) {
                int curr = i++, err;
 
-               if (!perf_test__matches(curr, argc, argv))
+               if (!perf_test__matches(t, curr, argc, argv))
                        continue;
 
-               pr_info("%2d: %-*s:", i, width, tests[curr].desc);
+               pr_info("%2d: %-*s:", i, width, t->desc);
 
                if (intlist__find(skiplist, i)) {
                        color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user 
override)\n");
@@ -265,8 +266,8 @@ static int __cmd_test(int argc, const char *argv[], struct 
intlist *skiplist)
                }
 
                pr_debug("\n--- start ---\n");
-               err = run_test(&tests[curr]);
-               pr_debug("---- end ----\n%s:", tests[curr].desc);
+               err = run_test(t);
+               pr_debug("---- end ----\n%s:", t->desc);
 
                switch (err) {
                case TEST_OK:
@@ -287,15 +288,14 @@ static int __cmd_test(int argc, const char *argv[], 
struct intlist *skiplist)
 
 static int perf_test__list(int argc, const char **argv)
 {
+       struct test *t;
        int i = 0;
 
-       while (tests[i].func) {
-               int curr = i++;
-
-               if (argc > 1 && !strstr(tests[curr].desc, argv[1]))
+       for_each_test(t) {
+               if (argc > 1 && !strstr(t->desc, argv[1]))
                        continue;
 
-               pr_info("%2d: %s\n", i, tests[curr].desc);
+               pr_info("%2d: %s\n", ++i, t->desc);
        }
 
        return 0;
-- 
2.1.0

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