[PATCH v4 04/12] selftests: kselftest_harness: generate test name once

[Jakub Kicinski]

Since we added variant support generating full test case
name takes 4 string arguments. We're about to need it
in another two places. Stop the duplication and print
once into a temporary buffer.

Suggested-by: Jakub Sitnicki <ja...@cloudflare.com>
Acked-by: Kees Cook <keesc...@chromium.org>
Signed-off-by: Jakub Kicinski <k...@kernel.org>
---
 tools/testing/selftests/kselftest_harness.h | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/kselftest_harness.h 
b/tools/testing/selftests/kselftest_harness.h
index 62ce258b0853..4a2bda6a67ed 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -56,6 +56,7 @@
 #include <asm/types.h>
 #include <ctype.h>
 #include <errno.h>
+#include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -1107,14 +1108,18 @@ void __run_test(struct __fixture_metadata *f,
                struct __fixture_variant_metadata *variant,
                struct __test_metadata *t)
 {
+       char test_name[LINE_MAX];
+
        /* reset test struct */
        t->passed = 1;
        t->skip = 0;
        t->trigger = 0;
        memset(t->results->reason, 0, sizeof(t->results->reason));
 
-       ksft_print_msg(" RUN           %s%s%s.%s ...\n",
-              f->name, variant->name[0] ? "." : "", variant->name, t->name);
+       snprintf(test_name, sizeof(test_name), "%s%s%s.%s",
+                f->name, variant->name[0] ? "." : "", variant->name, t->name);
+
+       ksft_print_msg(" RUN           %s ...\n", test_name);
 
        /* Make sure output buffers are flushed before fork */
        fflush(stdout);
@@ -1135,15 +1140,14 @@ void __run_test(struct __fixture_metadata *f,
        } else {
                __wait_for_test(t);
        }
-       ksft_print_msg("         %4s  %s%s%s.%s\n", t->passed ? "OK" : "FAIL",
-              f->name, variant->name[0] ? "." : "", variant->name, t->name);
+       ksft_print_msg("         %4s  %s\n",
+                      t->passed ? "OK" : "FAIL", test_name);
 
        if (t->skip)
                ksft_test_result_skip("%s\n", t->results->reason[0] ?
                                        t->results->reason : "unknown");
        else
-               ksft_test_result(t->passed, "%s%s%s.%s\n",
-                       f->name, variant->name[0] ? "." : "", variant->name, 
t->name);
+               ksft_test_result(t->passed, "%s\n", test_name);
 }
 
 static int test_harness_run(int argc, char **argv)
-- 
2.43.2