linux-kernel - Re: [RFC PATCH] Multi-threaded device probing

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Message-ID: <44C6B269.4080607@s5r6.in-berlin.de>
Date:	Wed, 26 Jul 2006 02:08:09 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	James Courtier-Dutton <James@...erbug.co.uk>
CC:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	greg@...ah.com
Subject: Re: [RFC PATCH] Multi-threaded device probing

James Courtier-Dutton wrote:
> What happens about the logging?
> Surely one would want the output from one probe to be output into the
> log as a block, and not mix the output from multiple simultaneous probes.

Use single-line printks were possible, or mutex-protected multiline 
blocks where you really can't do without multiple lines of printks that 
really cannot be separated. (Don't perform time consuming functions 
within those mutexes; that would defeat the multithreaded probing...)

To adjust printks is only the beginning of what is to be done to adapt 
single-threaded bus probes to multithreaded ones. There may be hidden 
assumptions that rely on single-threaded execution.
-- 
Stefan Richter
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http://arcgraph.de/sr/
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