linux-kernel - Re: [PATCH] dynamic_debug: allow to set dynamic debug flags right at module load time

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Message-ID: <201005270705.44179.roman.fietze@telemotive.de>
Date:	Thu, 27 May 2010 07:05:43 +0200
From:	Roman Fietze <roman.fietze@...emotive.de>
To:	Jason Baron <jbaron@...hat.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dynamic_debug: allow to set dynamic debug flags right at module load time

Hello Jason,

On Wednesday 26 May 2010 20:35:59 Jason Baron wrote:

> ... we want this to be runtime configurable.
> That is, we probably want this implemented as a module parameter, not as
> a compile time thing. something like: modprobe module verbose=1

Kind of

#define dynamic_pr_debug(fmt, ...) do {					\
	...
		DEBUG_HASH2, __LINE__,					\
		verbose ? _DPRINTK_FLAGS_PRINT : _DPRINTK_FLAGS_DEFAULT}; \
	...

But what if verbose isn't there?

Or something smarter inside dynamic_debug_setup() or
ddebug_add_module() looking for a module symbol or parameter with that
name?

If you'll give me a hint I could probably implement a proposal.


Roman

-- 
Roman Fietze                Telemotive AG Büro Mühlhausen
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