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

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Message-ID: <2e6ee265-903c-2b5c-aefd-ec24f930c999@iogearbox.net>
Date:   Thu, 14 Apr 2022 11:47:45 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Song Chen <chensong_2000@....cn>, 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

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
>