[alsa-devel] change kmalloc into vmalloc for large memory allocations

[Wang, Yalin]

Hi  


Yeah,  
Dma buffer must be allocated by kmalloc,

But the modules I list should can all be changed to use
vmalloc, because the buffer is only used by software,
Not by any hardware .


Thanks

-----Original Message-----
From: Huang Shijie [mailto:b32955 at freescale.com] 
Sent: Friday, February 28, 2014 4:55 PM
To: Wang, Yalin
Cc: 'linux-kernel at vger.kernel.org'; 'linux-arm-msm at vger.kernel.org'; 'linux-arm-kernel at lists.infradead.org'; 'linux-input at vger.kernel.org'; 'balbi at ti.com'; 'gregkh at linuxfoundation.org'; 'lrg at ti.com'; 'broonie at opensource.wolfsonmicro.com'; 'perex at perex.cz'; 'tiwai at suse.de'; 'pablo at netfilter.org'; 'kaber at trash.net'; 'davem at davemloft.net'; 'rostedt at goodmis.org'; 'fweisbec at gmail.com'; 'mingo at redhat.com'; 'dmitry.torokhov at gmail.com'; 'rydberg at euromail.se'; 'linux-usb at vger.kernel.org'; 'alsa-devel at alsa-project.org'; 'netfilter-devel at vger.kernel.org'; 'netfilter at vger.kernel.org'; 'coreteam at netfilter.org'; 'netdev at vger.kernel.org'
Subject: Re: change kmalloc into vmalloc for large memory allocations

于 2014年02月28日 16:15, Wang, Yalin 写道:
> could this module change the memory allocation into vmalloc ?
the buffer allocated by vmalloc can not be used for the DMA.

I think that's why drivers use the kmalloc.

thanks
Huang Shijie