linux-kernel - Re: [PATCH 1/3] dmatest: make module parameters writable

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Date:	Fri, 2 Aug 2013 18:03:29 +0000
From:	Dan Williams <djbw@...com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Dave Jiang <dave.jiang@...el.com>,
	"Blin, Jerome" <jerome.blin@...el.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 1/3] dmatest: make module parameters writable



On 8/2/13 10:56 AM, "Steven Rostedt" <rostedt@...dmis.org> wrote:

>On Fri, 2013-08-02 at 17:49 +0000, Dan Williams wrote:
>
>> However, unless I missed it, I don¹t see this support[1] upstream yet.
>> 
>> 
>> --
>> Dan
>> 
>> [1]: https://lwn.net/Articles/432186/
>
>IIRC, there was some push back from doing this. I don't really remember
>who? Rusty maybe?
>
>Or maybe not, it seems he had some comments on it in that thread:
>
>http://thread.gmane.org/gmane.linux.kernel/1110481
>
>Perhaps I got busy and dropped it :-/
>
>Anyway, if there's a demand for it, we can always revisit the idea.

Dmatest has infrastructure to collect a list of test result messages and
output them on-demand when reading a debugfs file.  I figure we might as
well trace them but would want to enable the tracepoints when the module
is loaded.