linux-kernel - Re: [RFC PATCH 0/7] perf tools: Config BPF maps through perf cmdline

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Date:	Sun, 18 Oct 2015 07:58:34 +0800
From:	"Wangnan (F)" <wangnan0@...wei.com>
To:	Alexei Starovoitov <ast@...mgrid.com>, <acme@...nel.org>,
	<brendan.d.gregg@...il.com>
CC:	<a.p.zijlstra@...llo.nl>, <daniel@...earbox.net>,
	<dsahern@...il.com>, <hekuang@...wei.com>, <jolsa@...nel.org>,
	<lizefan@...wei.com>, <masami.hiramatsu.pt@...achi.com>,
	<namhyung@...nel.org>, <paulus@...ba.org>,
	<linux-kernel@...r.kernel.org>, <pi3orama@....com>,
	<xiakaixu@...wei.com>
Subject: Re: [RFC PATCH 0/7] perf tools: Config BPF maps through perf cmdline



On 2015/10/18 4:35, Alexei Starovoitov wrote:
> On 10/17/15 3:48 AM, Wang Nan wrote:
>> In these 7 patches:
>>
>>   1. perf is able to put values into map:
>>    # perf record -e mybpf.c/maps.values.value=1234/ ...
>>
>>   2. perf is able to control different slots in a map separately:
>>    # perf record -e 
>> mybpf.c/maps.values.value[1,4-6]=1234,maps.values.value[0,2-3]=5678/ ...
>>
>>   3. The second syntax can be applied to perf event also:
>>    # perf record -v -a -e evt=cycles -e 
>> mybpf.c/maps.pmu_map.event[0]=evt/ ...
>>
>>   4. Compatible with the old syntax:
>>    # perf record -v -a -e evt=cycles -e 
>> mybpf.c/maps.pmu_map.event=evt/ ...
>
> The concept looks good and solves real need.
> No opinion on implementation.
>
Can I translate these words into an acked-by?

And what's your PERF_COUNT_SW_BPF_OUTPUT going on? I think based on this
patchset you can test it with perf now.

Thank you.

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