From: Vinod Koul <vkoul@kernel.org>
To: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: dan.j.williams@intel.com, dmaengine@vger.kernel.org,
grygorii.strashko@ti.com
Subject: [RFC,1/5] dmaengine: Add support for reporting DMA cached data amount
Date: Tue, 9 Oct 2018 17:11:05 +0530 [thread overview]
Message-ID: <20181009114105.GM2372@vkoul-mobl> (raw)
On 09-10-18, 14:05, Peter Ujfalusi wrote:
>
>
> On 2018-10-09 13:47, Vinod wrote:
> > On 24-09-18, 16:00, Peter Ujfalusi wrote:
> >> A DMA hardware can have big cache or FIFO and the amount of data sitting in
> >> the DMA fabric can be an interest for the clients.
> >>
> >> For example in audio we want to know the delay in the data flow and in case
> >> the DMA have significantly large FIFO/cache, it can affect the latenc/delay
> >
> > this looks okay to me, but not really up for 'cached', better
> > alternates?
>
> It is after all the amount of bytes cached within the DMA fabric, but I
> agree it is a bit awkward.
>
> Recently I tried to come up with something better, but did not went too
> far...
> dma_cached_bytes?
> dma_held_bytes?
> in_flight_bytes?
> not_in_source_but_not_yet_in_destination_bytes :D ?
yeah_that_sounds_good :D, i think in_flight would be apt here..
next reply other threads:[~2018-10-09 11:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 11:41 Vinod Koul [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-10-09 11:05 [RFC,1/5] dmaengine: Add support for reporting DMA cached data amount Peter Ujfalusi
2018-10-09 10:47 Vinod Koul
2018-09-24 13:00 Peter Ujfalusi
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