linux-kernel - Re: [RFC/PATCH] lib/vsprintf: Add support to store cpumask

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Message-ID: <87mvm5gezg.fsf@rasmusvillemoes.dk>
Date:	Tue, 28 Jun 2016 23:50:27 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Jiri Olsa <jolsa@...nel.org>, Lai Jiangshan <laijs@...fujitsu.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [RFC/PATCH] lib/vsprintf: Add support to store cpumask

On Tue, Jun 28 2016, Steven Rostedt <rostedt@...dmis.org> wrote:

> But people don't usually run "make smatch" on debug kernels.
> trace_printk() currently is not allowed to be used in the kernel. When
> it is used, a big ugly banner is posted on boot up saying that the
> kernel is in "debug mode" and is "unstable" (even though it isn't) just
> to scare people enough to never compile with a trace_printk() in their
> code. If they need a permanent trace_printk() then they need to use
> tracepoints.

But don't tracepoints also pass through vbin_printf? IOW, are there no
print-like function calls in the kernel where a static checker warning
for %pX would be worthwhile?

Rasmus