[alsa-devel] [PATCH 1/2 v2] ASoC: soc-cache: block based rbtree compression

Takashi Iwai tiwai at suse.de
Tue May 3 17:30:44 CEST 2011

At Tue, 3 May 2011 16:24:05 +0100,
Mark Brown wrote:
> On Tue, May 03, 2011 at 05:22:12PM +0200, Takashi Iwai wrote:
> > This is what I don't understand.  The sync loop is anyway done in the
> > sorted order in rb-tree.  How can the contiguous array helps to change
> > the I/O pattern...?
> You don't need to retransmit the I2C device address or the register
> address for every single register.

Is this behavior achieved really by these patches?  As far as I read
these two patches, they change how values are stored in the rb-tree.
Now it'll be partially an array instead of one-value-per-node.  But,
this doesn't change how snd_soc_read() / snd_soc_write() are called.

Could you give an example which driver would be influenced actually?


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