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


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