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Groups > linux.kernel > #1406020
| From | Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] dma: rcar-dmac: use list_add() on rcar_dmac_desc_put() |
| Date | 2016-05-24 12:00 +0200 |
| Message-ID | <rChi2-1AN-31@gated-at.bofh.it> (permalink) |
| References | <ruiuB-Vd-7@gated-at.bofh.it> <ruiuB-Vd-15@gated-at.bofh.it> <ryCEq-4qo-23@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Vinod, On Saturday 14 May 2016 13:27:31 Vinod Koul wrote: > On Fri, Apr 22, 2016 at 01:50:04AM +0000, Kuninori Morimoto wrote: > > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > > > > Current rcar_dmac_desc_put() is using list_add_tail() in order to > > push used descriptor to list of free descriptors, and next DMA transfer > > try to reuse it from this list. But because it is using *_tail(), > > this reuse effect can't be obtained without using all of them. > > For a longer-term solution, we should allocate hardware descriptors > > using GFP_KERNEL instead of GFP_NOWAIT, but it is difficult today. > > This patch uses list_add() instead of list_add_tail() for short-term > > solution. > > Applied, thanks Thanks, but where did you apply it to ? I can't find it in your tree. -- Regards, Laurent Pinchart
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Re: [PATCH] dma: rcar-dmac: use list_add() on rcar_dmac_desc_put() Vinod Koul <vinod.koul@intel.com> - 2016-05-14 10:00 +0200
Re: [PATCH] dma: rcar-dmac: use list_add() on rcar_dmac_desc_put() Laurent Pinchart <laurent.pinchart@ideasonboard.com> - 2016-05-24 12:00 +0200
Re: [PATCH] dma: rcar-dmac: use list_add() on rcar_dmac_desc_put() Vinod Koul <vinod.koul@intel.com> - 2016-05-26 17:30 +0200
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