Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable DMA on Quark

From	Bryan O'Donoghue <pure.logic@nexus-software.ie>
Newsgroups	linux.kernel
Subject	Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable DMA on Quark
Date	2016-05-26 18:20 +0200
Message-ID	<rD6aS-ac-9@gated-at.bofh.it> (permalink)
References	<rvPHP-7CY-5@gated-at.bofh.it> <ry0ps-8tw-17@gated-at.bofh.it> <rAkN3-1lh-5@gated-at.bofh.it> <rCotc-6fG-15@gated-at.bofh.it>
Organization	Nexus Software

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On Tue, 2016-05-24 at 20:37 +0300, Andy Shevchenko wrote:
> Below results doesn't show DMA case (by the way, how did you disable
> DMA
> in 3.8.7?) for stock kernel.

The stock kernel on SPI flash for my early Gen1 is a non-DMA 8250
driver, so nothing needs to be done to that, it's basically just the
3.8.7 8250 in PIO mode.

> Anyway, I added preliminary support to change DMA mode run-time.
> Check
> my today topic/dw/qrk branch. It would be nice to see all 4 cases:
> DMA
> vs non-DMA on stock kernel (Yocto) and mine.

I'll have another look at your latest branch and run the same tests.

> 
> P.S. What is the point to test arbitrary tip branch?

Just tip-of-tree, we can benchmark against the 4.6 tag if you prefer.

---
bod

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Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-05-12 17:10 +0200
  Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Vinod Koul <vinod.koul@intel.com> - 2016-05-12 18:00 +0200
  Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-05-19 03:20 +0200
    Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-05-24 19:40 +0200
      Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-05-24 20:10 +0200
        Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-05-26 18:40 +0200
      Re: [PATCH v5 00/11] serial: 8250: split LPSS to 8250_lpss, enable  DMA on Quark Bryan O'Donoghue <pure.logic@nexus-software.ie> - 2016-05-26 18:20 +0200

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