Re: [PATCH 3/6] dmatest: move printing to its own routine

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On Wed, May 21, 2025 at 03:41:38PM +0100, Robin Murphy wrote:
> On 2025-05-20 11:39 pm, Luis Chamberlain wrote:
> > Move statistics printing to its own routine, and while at it, put
> > the test counters into the struct dmatest_thread for the streaming DMA
> > API to allow us to later add IOVA DMA API support and be able to
> > differentiate.
> > 
> > While at it, use a mutex to serialize output so we don't get garbled
> > messages between different threads.
> > 
> > This makes no functional changes other than serializing the output
> > and prepping us for IOVA DMA API support.
> 
> Um, what about subtly changing the test timing and total runtime
> calculation, and significantly changing the output format enough to almost
> certainly break any scripts parsing it? What definition of "functional" are
> we using here, exactly? :/

Sure, we can keep the old format if that is the preference.

> Also the
> mutex doesn't prevent *other* kernel messages from being interspersed, so
> multi-line output still isn't really stable.

*other* sure -- but for this test it makes things legible, otherwise its
quite re-ordered.

  Luis




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