linux-kernel - Re: Why sparse does not support context tracking?

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Message-ID: <1430746737.2013.22.camel@sipsolutions.net>
Date:	Mon, 04 May 2015 15:38:57 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Alexander Riesen <alexander.riesen@...itec.com>
Cc:	linux-sparse@...r.kernel.org, linux-kernel@...r.kernel.org,
	Josh Triplett <josh@...edesktop.org>,
	Christopher Li <sparse@...isli.org>
Subject: Re: Why sparse does not support context tracking?

On Mon, 2015-05-04 at 13:05 +0200, Alexander Riesen wrote:
> Hi,
> 
> I tried to instrument my code (a kernel driver) with __must_hold hints
> and noticed that they don't really work: a definitely broken code caused
> no errors from sparse.

>      Revert the context tracking code

> So it seems that the code has problems with different contexts. Still, it seems
> a bit heavy-handed to remove it completely (assuming it worked, of course).

It didn't really work. It had a lot of issues that were too big for my
little wireless-focused brain :)

johannes

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