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Date:   Fri, 3 Nov 2017 21:00:11 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>, acme@...nel.org
Cc:     jolsa@...nel.org, peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org,
        ak@...ux.intel.com, kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v5 2/6] perf record: Get the first sample time and last
 sample time



On 10/24/2017 3:16 PM, Jiri Olsa wrote:
> On Tue, Oct 24, 2017 at 10:03:05AM +0800, Jin, Yao wrote:
> 
> SNIP
> 
>>> hum, could you still unset the sample if there's no time given?
>>> and keep the speed in this case..
>>>
>>> jirka
>>>
>>
>> Hi Jiri,
>>
>> I check this question again. The '--time' option is for perf report but not
>> for perf record.
>>
>> For perf record, we have to always walk on all samples to get the time of
>> first sample and the time of last sample whatever buildid_all is enabled or
>> not enabled. So 'rec->tool.sample = NULL' is removed.
>>
>> Sorry, the previous mail was replied at midnight, I was drowsy. :(
>>
>> If my answer is correct, I will not send v6. If my understanding is still
>> not correct, please let me know.
> 
> right, I did not realize we store this unconditionaly.. then yes, it's ok
> 
> I think I've already acked this, anyway for the patchset:
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>
> 
> thanks,
> jirka
> 

Hi Arnaldo,

Is this patch-set OK for merging or anything I should improve?

Thanks
Jin Yao

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