linux-kernel - Re: [RFC PATCH 0/1] sample: bpf: introduce irqlat

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Message-ID: <ac371d36-2624-cdd8-0c15-62ccf53bed81@189.cn>
Date:   Thu, 14 Apr 2022 19:25:22 +0800
From:   Song Chen <chensong_2000@....cn>
To:     Daniel Borkmann <daniel@...earbox.net>, ast@...nel.org,
        andrii@...nel.org, kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/1] sample: bpf: introduce irqlat

hi Daniel,

Thanks for liking the idea.

My target is embedded devices, that's why i get started from ebpf C.bcc 
and bpftrace is a good idea, but i prefer taking one thing at a time, 
what's more, i'm not familiar with python, it might take longer.

Once C code is accepted, i will move myself to bcc and bpftrace. Is it 
ok for you?

BR

Song


在 2022/4/14 17:47, Daniel Borkmann 写道:
> On 4/14/22 11:07 AM, Song Chen wrote:
>> I'm planning to implement a couple of ebpf tools for preempt rt,
>> including irq latency, preempt latency and so on, how does it sound
>> to you?
> 
> Sounds great, thanks! Please add these tools for upstream inclusion 
> either to bpftrace [0] or
> bcc [1], then a wider range of users would be able to benefit from them 
> as well as they are
> also shipped as distro packages and generally more widely used compared 
> to kernel samples.
> 
> Thanks Song!
> 
>    [0] https://github.com/iovisor/bpftrace/tree/master/tools
>    [1] https://github.com/iovisor/bcc/tree/master/libbpf-tools
> 
>> Song Chen (1):
>>    sample: bpf: introduce irqlat
>>
>>   samples/bpf/.gitignore    |   1 +
>>   samples/bpf/Makefile      |   5 ++
>>   samples/bpf/irqlat_kern.c |  81 ++++++++++++++++++++++++++++++
>>   samples/bpf/irqlat_user.c | 100 ++++++++++++++++++++++++++++++++++++++
>>   4 files changed, 187 insertions(+)
>>   create mode 100644 samples/bpf/irqlat_kern.c
>>   create mode 100644 samples/bpf/irqlat_user.c
>>
> 
>