linux-kernel - Hint needed : how to debug sempahore's problem

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Message-ID: <20070902194031.GA24800@ingate.macqel.be>
Date:	Sun, 2 Sep 2007 21:40:31 +0200
From:	Philippe De Muyter <phdm@...qel.be>
To:	linux-kernel@...r.kernel.org
Cc:	uclinux-dev@...inux.org
Subject: Hint needed : how to debug sempahore's problem

Hi all,

Can someone give me some hint or link for the following question :

I have several processes blocked in 'D' state, and I surmise they are
waiting for a semaphore (in the `down' routine).  How is it possible :
- to verify the processes are really blocked on a semaphore,
- to see which semaphore they are waiting on,
- to find out which process/driver/whatever holds those semaphores.

If that matters, I work on a m68k board.

Thanks in advance

Philippe
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