From: "Wangnan (F)" <wangnan0@huawei.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: <acme@kernel.org>, <lizefan@huawei.com>,
<linux-kernel@vger.kernel.org>, <pi3orama@163.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Jiri Olsa <jolsa@kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Nilay Vaish <nilayvaish@gmail.com>, He Kuang <hekuang@huawei.com>
Subject: Re: [PATCH v14 3/8] perf tests: Add testcase for auxiliary evlist
Date: Mon, 11 Jul 2016 11:20:03 +0800 [thread overview]
Message-ID: <57831063.9020901@huawei.com> (raw)
In-Reply-To: <20160708144845.GF31763@krava>
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
next prev parent reply other threads:[~2016-07-11 3:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-07 5:34 [PATCH v14 0/8] perf tools: Support overwritable ring buffer Wang Nan
2016-07-07 5:34 ` [PATCH v14 1/8] perf tools: Drop redundant evsel->overwrite indicator Wang Nan
2016-07-07 5:34 ` [PATCH v14 2/8] perf evlist: Introduce aux evlist Wang Nan
2016-07-07 5:34 ` [PATCH v14 3/8] perf tests: Add testcase for auxiliary evlist Wang Nan
2016-07-08 14:48 ` Jiri Olsa
2016-07-08 14:48 ` Jiri Olsa
2016-07-08 14:48 ` Jiri Olsa
2016-07-11 3:20 ` Wangnan (F) [this message]
2016-07-07 5:34 ` [PATCH v14 4/8] perf record: Introduce rec->overwrite_evlist for overwritable events Wang Nan
2016-07-08 14:48 ` Jiri Olsa
2016-07-08 14:48 ` Jiri Olsa
2016-07-07 5:34 ` [PATCH v14 5/8] perf record: Read from overwritable ring buffer Wang Nan
2016-07-07 5:34 ` [PATCH v14 6/8] perf tools: Enable overwrite settings Wang Nan
2016-07-07 5:34 ` [PATCH v14 7/8] perf tools: Don't warn about out of order event if write_backward is used Wang Nan
2016-07-07 5:34 ` [PATCH v14 8/8] perf tools: Add --tail-synthesize option Wang Nan
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