Re: [PATCH v2 09/18] perf test: Add named_threads workload

On Tue, Jun 02, 2026 at 03:26:51PM +0100, James Clark wrote:

+#define DEFINE_THREAD(n) \ +noinline void *named_threads_thread##n(void *arg __maybe_unused) \ +{ \

• pthread_setname_np(pthread_self(), "thread" #n); \
• for (int i = 0; i < iterations; i++) \

• named_threads_work *= 3;				\
  

• 							\
  

• return NULL; \

+}

+static int named_threads(int argc, const char **argv) +{

• pthread_t threads[MAX_THREADS];
• int nr_threads = 1;
• int err = 0;
• if (argc > 0)

• nr_threads = atoi(argv[0]);
  

• if (nr_threads <= 0 || nr_threads > MAX_THREADS) {

• fprintf(stderr, "Error: num threads must be 1 - %d\n", MAX_THREADS);
  

• return 1;
  

• }
• if (argc > 1)

• iterations = atoi(argv[1]);
  

• if (iterations < 0) {

• fprintf(stderr, "Error: iterations must be non-negative\n");
  

• return 1;
  

• }
• for (int i = 0; i < nr_threads; i++) {

• int ret;
  

• ret = pthread_create(&threads[i], NULL, thread_fns[i], NULL);
  

Just curious this can be simplified to a thread function, like:

noinline void *named_thread(void *arg) { char name[16];

snprintf(name, sizeof(name), "thread%d", int(arg));

pthread_setname_np(pthread_self(), name); ... return NULL; }

Thanks, Leo