igt/gem_concurrent_blit: Separate out the combinatorial explosion

Apparently nobody else likes testing and debugging GEM coherency issues.
However, this also means that QA is skipping these vital tests. Split
out a set of canaries into igt/gem_concurrent_blit and keep the rest in
igt/gem_concurrent_all.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89497
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

lib/igt_core.c

@@ -248,6 +248,11 @@ static struct {
 } log_buffer;
 static pthread_mutex_t log_buffer_mutex = PTHREAD_MUTEX_INITIALIZER;
 
+const char *igt_test_name(void)
+{
+	return command_str;
+}
+
 static void _igt_log_buffer_append(char *line)
 {
 	pthread_mutex_lock(&log_buffer_mutex);

lib/igt_core.h

@@ -202,6 +202,7 @@ bool igt_only_list_subtests(void);
 	static void igt_tokencat(__real_main, __LINE__)(void) \
 
 
+const char *igt_test_name(void);
 void igt_simple_init_parse_opts(int *argc, char **argv,
 				const char *extra_short_opts,
 				struct option *extra_long_opts,