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Date: Wed, 20 Jan 2016 09:37:42 +0800
From: "Wangnan (F)" <wangnan0@huawei.com>
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To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
CC: <peterz@infradead.org>, <ast@kernel.org>, <linux-kernel@vger.kernel.org>,
        He Kuang <hekuang@huawei.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
References: <20160118120230.GP6357@twins.programming.kicks-ass.net> <1453202210-134429-1-git-send-email-wangnan0@huawei.com> <20160119174239.GA83683@ast-mbp.thefacebook.com>
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On 2016/1/20 1:42, Alexei Starovoitov wrote:
> 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.

I'll try it today. However, putting all of the three together is
not as easy as this patchset.

Thank you.