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From: Luigi Rizzo <rizzo@iet.unipi.it>
To: bpf@vger.kernel.org, Daniel Borkmann <daniel@iogearbox.net>
Subject: arch_prepare_bpf_trampoline() for arm ?
Date: Wed, 24 Feb 2021 20:54:37 +0100	[thread overview]
Message-ID: <CA+hQ2+hhDG2JprNLaUdX4xgcihvchEda1aJuQN3jtJ3hYucDcQ@mail.gmail.com> (raw)

I prepared a BPF version of kstats[1]
https://github.com/luigirizzo/lr-cstats
that uses fentry/fexit hooks to monitor the execution time
of a kernel function.

I hoped to have it working on ARM64 too, but it looks like
arch_prepare_bpf_trampoline() only exists for x86.

Is there any outstanding patch for this function on ARM64,
or any similar function I could look at to implement it myself ?

thanks
luigi


[1] kstats is an in-kernel also in the above repo and previously
discussed at https://lwn.net/Articles/813303/

-- 
-----------------------------------------+-------------------------------
 Prof. Luigi RIZZO, rizzo@iet.unipi.it  . Dip. di Ing. dell'Informazione
 http://www.iet.unipi.it/~luigi/        . Universita` di Pisa
 TEL      +39-050-2217533               . via Diotisalvi 2
 Mobile   +39-338-6809875               . 56122 PISA (Italy)
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             reply	other threads:[~2021-02-24 19:57 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-24 19:54 Luigi Rizzo [this message]
2021-02-24 21:01 ` arch_prepare_bpf_trampoline() for arm ? Daniel Borkmann
2021-02-24 21:25   ` Toke Høiland-Jørgensen
2021-02-25  7:59     ` Jean-Philippe Brucker
2021-02-24 21:30   ` KP Singh
2021-02-24 22:27     ` Daniel Borkmann

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