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Date: Tue, 19 Jan 2016 09:42:40 -0800
From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Wang Nan <wangnan0@huawei.com>
Cc: peterz@infradead.org, ast@kernel.org, linux-kernel@vger.kernel.org,
        He Kuang <hekuang@huawei.com>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
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        Jiri Olsa <jolsa@kernel.org>,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        Namhyung Kim <namhyung@kernel.org>, Zefan Li <lizefan@huawei.com>,
        pi3orama@163.com
Subject: Re: [PATCH 0/6] perf core: Read from overwrite ring buffer
Message-ID: <20160119174239.GA83683@ast-mbp.thefacebook.com>
References: <20160118120230.GP6357@twins.programming.kicks-ass.net>
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On Tue, Jan 19, 2016 at 11:16:44AM +0000, Wang Nan wrote:
> This patchset introduces two methods to support reading from overwrite.
> 
>  1) Tailsize: write the size of an event at the end of it
>  2) Backward writing: write the ring buffer from the end of it to the
>     beginning.

what happend with your other idea of moving the whole header to the end?
That felt better than either of these options.