linux-kernel - Re: [PATCH v4 2/4] ftrace: Add support for function argument to graph tracer

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Message-ID: <9dafc156-1272-4039-a9c0-3448a1bd6d1f@sirena.org.uk>
Date: Fri, 11 Apr 2025 19:16:29 +0100
From: Mark Brown <broonie@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	bpf@...r.kernel.org, Masami Hiramatsu <mhiramat@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sven Schnelle <svens@...ux.ibm.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Guo Ren <guoren@...nel.org>,
	Donglin Peng <dolinux.peng@...il.com>,
	Zheng Yejian <zhengyejian@...weicloud.com>, Aishwarya.TCV@....com
Subject: Re: [PATCH v4 2/4] ftrace: Add support for function argument to
 graph tracer

On Fri, Apr 11, 2025 at 06:39:12PM +0100, Mark Brown wrote:
> On Fri, Apr 11, 2025 at 01:12:54PM -0400, Steven Rostedt wrote:
> > Mark Brown <broonie@...nel.org> wrote:

> > > # not ok 25 Checking dynamic events limitations

> > > which isn't flagged as a regression (there's some other UNRESOLVED ones).

> > Hmm, don't know about that one.

...

> which smells a bit of a shell incompatibility issue.  I'll try to find
> time to have a look.

Yeah, if I bodge ftracetest to be a bash script then the test runs fine
so it'll be a bashism.  We're running the tests in a Debian rootfs so
/bin/sh will be dash.

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