Re: [PATCH v14 3/8] perf tests: Add testcase for auxiliary evlist

[Wangnan (F)]

On 2016/7/8 22:48, Jiri Olsa wrote:

On Thu, Jul 07, 2016 at 05:34:44AM +0000, Wang Nan wrote:

SNIP

        ret = TEST_FAIL;
-       err = do_test(evlist, opts.mmap_pages, &sample_count,
+       err = do_test(evlist, aux_evlist, opts.mmap_pages,
+                     &enter_sample_count, &exit_sample_count,
                      &comm_count);
        if (err != TEST_OK)
                goto out_delete_evlist;

- if ((sample_count != NR_ITERS) || (comm_count != NR_ITERS)) {

-               pr_err("Unexpected counter: sample_count=%d, comm_count=%d\n",
-                      sample_count, comm_count);
+       if (enter_sample_count != exit_sample_count) {
+               pr_err("Unexpected counter: enter_sample_count=%d, 
exit_sample_count=%d\n",
+                      enter_sample_count, exit_sample_count);
+               goto out_delete_evlist;
+       }
+
+       if ((exit_sample_count != NR_ITERS) || (comm_count != NR_ITERS)) {
+               pr_err("Unexpected counter: exit_sample_count=%d, 
comm_count=%d\n",
+                      exit_sample_count, comm_count);
                goto out_delete_evlist;
        }

- err = do_test(evlist, 1, &sample_count, &comm_count);

+       err = do_test(evlist, aux_evlist, 1, &dummy, &dummy, &dummy);

why dont you test numbers for 1 page mmap?  seems like the data would fit..
is the purpose just to check if we can map just 1 page?

Data won't fit. 1 page map make sure the buffer is overwritten.

Thank you.

thanks,
jirka