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Re: [PATCH v9 1/8] perf evlist: Introduce aux evlist

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On 22 June 2016 at 04:08, Wang Nan <wangnan0@huawei.com> wrote:

> @@ -1916,3 +1922,24 @@ perf_evlist__find_evsel_by_str(struct perf_evlist *evlist,
>
>         return NULL;
>  }
> +
> +struct perf_evlist *perf_evlist__new_aux(struct perf_evlist *parent)
> +{
> +       struct perf_evlist *evlist;
> +
> +       if (perf_evlist__is_aux(parent)) {
> +               pr_err("Internal error: create aux evlist from another aux evlist\n");
> +               return NULL;
> +       }
> +
> +       evlist = zalloc(sizeof(*evlist));
> +       if (!evlist)
> +               return NULL;
> +
> +       perf_evlist__init(evlist, parent->cpus, parent->threads);
> +       evlist->parent = parent->parent;

A very minor suggestion.  I think evlist->parent  should be set to
'parent' and not 'parent->parent'.  I agree the two values are equal,
but setting to parent->parent just does not seem right.

--
Nilay

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[PATCH v9 0/8] perf tools: Support overwritable ring buffer Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:10 +0200
  [PATCH v9 7/8] perf tools: Don't warn about out of order event if write_backward is used Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:10 +0200
  [PATCH v9 4/8] perf record: Introduce rec->overwrite_evlist for overwritable events Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
  [PATCH v9 2/8] perf tests: Add testcase for auxiliary evlist Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
  [PATCH v9 5/8] perf record: Toggle overwrite ring buffer for reading Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
    Re: [PATCH v9 5/8] perf record: Toggle overwrite ring buffer for reading Nilay Vaish <nilayvaish@gmail.com> - 2016-06-22 16:40 +0200
      Re: [PATCH v9 5/8] perf record: Toggle overwrite ring buffer for  reading "Wangnan (F)" <wangnan0@huawei.com> - 2016-06-23 03:30 +0200
  [PATCH v9 3/8] perf record: Extract perf_evlist__mmap_ex() processing to a new function Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
  [PATCH v9 6/8] perf tools: Enable overwrite settings Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
  [PATCH v9 8/8] perf tools: Add --tail-synthesize option Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
  [PATCH v9 1/8] perf evlist: Introduce aux evlist Wang Nan <wangnan0@huawei.com> - 2016-06-22 11:20 +0200
    Re: [PATCH v9 1/8] perf evlist: Introduce aux evlist Nilay Vaish <nilayvaish@gmail.com> - 2016-06-22 15:20 +0200
      Re: [PATCH v9 1/8] perf evlist: Introduce aux evlist Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-06-22 15:50 +0200
        Re: [PATCH v9 1/8] perf evlist: Introduce aux evlist "Wangnan (F)" <wangnan0@huawei.com> - 2016-06-23 03:40 +0200
    [PATCH v9.1] perf evlist: Introduce aux evlist Wang Nan <wangnan0@huawei.com> - 2016-06-23 04:20 +0200

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