linux-kernel - Re: [PATCH 4/4] compat: add some tracing backport work

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Date:	Mon, 26 Mar 2012 10:49:28 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	"Luis R. Rodriguez" <mcgrof@...jolero.org>
Cc:	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	lf_driver_backport@...ts.linux-foundation.org
Subject: Re: [PATCH 4/4] compat: add some tracing backport work

On Wed, 2012-03-21 at 21:29 -0700, Luis R. Rodriguez wrote:

> But no dice. I then figured it may be my kernel with
> CONFIG_TRACEPOINTS=y and indeed that is the case -- so we have to
> consider the case where the target kernel may have tracing enabled and
> we have to disable it somehow. Undef'ing CONFIG_TRACEPOINTS and
> DECLARE_TRACE doesn't really do it.

Oh, ok, yuck. So I guess we can't easily disable tracing if it's enabled
in the base kernel ...

> We may need to redefine each macro to some COMPAT_TRACE_ macro, not sure yet.

That would require patches again though, no fun either.

johannes

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