netdev - Re: [RFC net-next 21/22] selftests: drv-net: add helper/wrapper for bpftrace

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Message-ID: <aFvqWpnkGaDazk3D@gmail.com>
Date: Wed, 25 Jun 2025 05:23:54 -0700
From: Breno Leitao <leitao@...ian.org>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
	pabeni@...hat.com, andrew+netdev@...n.ch, horms@...nel.org,
	donald.hunter@...il.com, sdf@...ichev.me, almasrymina@...gle.com,
	dw@...idwei.uk, asml.silence@...il.com, ap420073@...il.com,
	jdamato@...tly.com, dtatulea@...dia.com, michael.chan@...adcom.com
Subject: Re: [RFC net-next 21/22] selftests: drv-net: add helper/wrapper for
 bpftrace

On Mon, Apr 21, 2025 at 03:28:26PM -0700, Jakub Kicinski wrote:
> bpftrace is very useful for low level driver testing. perf or trace-cmd
> would also do for collecting data from tracepoints, but they require
> much more post-processing.
> 
> Add a wrapper for running bpftrace and sanitizing its output.
> bpftrace has JSON output, which is great, but it prints loose objects
> and in a slightly inconvenient format. We have to read the objects
> line by line, and while at it return them indexed by the map name.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

FYI: I've stolen this patch and send as part of my netpoll test patchset:

https://lore.kernel.org/all/20250625-netpoll_test-v2-1-47d27775222c@debian.org/