From: gregkh@suse.de (Greg KH)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/5] DMA: reduce the number of memory allocations
Date: Thu, 19 Aug 2010 09:02:55 -0700 [thread overview]
Message-ID: <20100819160255.GA3948@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.1008191744560.26145@axis700.grange>
On Thu, Aug 19, 2010 at 05:46:38PM +0200, Guennadi Liakhovetski wrote:
> On Thu, 19 Aug 2010, Greg KH wrote:
>
> > On Thu, Aug 19, 2010 at 04:40:15PM +0200, Guennadi Liakhovetski wrote:
> > > Allocate the bitmap in dma_declare_coherent_memory() together with the struct
> > > dma_coherent_mem object.
> >
> > You describe what you did, but _why_ are you doing it?
>
> Well, to me the subject "_reduce_ the number..." is already a reason
> enough - the fewer kmalloc's of 20 bytes - the better, I think. But if you
> like, I can update the description too.
Yes, as I missed that, others might as well :)
thanks,
greg k-h
next prev parent reply other threads:[~2010-08-19 16:02 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-19 14:39 [PATCH 0/5] Add API for DMA memory reservation for devices Guennadi Liakhovetski
2010-08-19 14:40 ` [PATCH 1/5] DMA: Remove unneeded "extern" from function declarations Guennadi Liakhovetski
2010-08-19 14:40 ` [PATCH 2/5] DMA: dma_declare_coherent_memory() should return an error if unsupported Guennadi Liakhovetski
2010-08-19 14:40 ` [PATCH 3/5] DMA: reduce the number of memory allocations Guennadi Liakhovetski
2010-08-19 15:35 ` Greg KH
2010-08-19 15:46 ` Guennadi Liakhovetski
2010-08-19 16:02 ` Greg KH [this message]
2010-09-14 8:52 ` Paul Mundt
2010-09-15 7:23 ` Guennadi Liakhovetski
2010-09-16 2:58 ` FUJITA Tomonori
2010-09-16 7:04 ` Russell King - ARM Linux
2010-09-16 7:08 ` FUJITA Tomonori
2010-09-16 4:22 ` Paul Mundt
2010-08-20 1:15 ` Michał Nazarewicz
2010-08-19 14:40 ` [PATCH 4/5] DMA: Add functions to preallocate DMA memory dor devices Guennadi Liakhovetski
2010-09-02 10:50 ` Russell King - ARM Linux
2010-09-15 7:28 ` Uwe Kleine-König
2010-08-19 14:40 ` [PATCH 5/5] SH: use dma_preallocate_coherent_memory() for platform device memory Guennadi Liakhovetski
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