linux-kernel - Re: [PATCH] trace: Fix some checker warnings

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Message-Id: <20221206225923.342044429adb3aafe67400a7@kernel.org>
Date:   Tue, 6 Dec 2022 22:59:23 +0900
From:   Masami Hiramatsu (Google) <mhiramat@...nel.org>
To:     David Howells <dhowells@...hat.com>
Cc:     rostedt@...dmis.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] trace: Fix some checker warnings

On Mon, 05 Dec 2022 10:29:46 +0000
David Howells <dhowells@...hat.com> wrote:

> Btw, do you know how to deal with:
> 
> 	add_ftrace_export(struct trace_export **list, struct trace_export *export)
> 
> being called by:
> 
> 	add_ftrace_export(&ftrace_exports_list, export);
> 
> but ftrace_exports_list has an __rcu annotation, so the list argument in the
> former should have an __rcu annotation in it somewhere too.

Can't you just add __rcu to the 'list' argument?

> 
> OTOH - there's only one user of add_trace_export() and add_ftrace_export(), so
> can they be collapsed into register_ftrace_export()?

Steve, do you have any idea?

Thanks,

> 
> David
> 


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>