svn commit: r279828 - head/sys/dev/cadence

[Scott Long]

> On Mar 9, 2015, at 4:39 PM, Ian Lepore <ian at FreeBSD.org> wrote:
> 
> Author: ian
> Date: Mon Mar  9 22:39:58 2015
> New Revision: 279828
> URL: https://svnweb.freebsd.org/changeset/base/279828
> 
> Log:
>  Use the new ifnet API.  Also, allocate bus_dma_maps as needed instead of
>  pre-allocating them all at start-up.  Also fix a bug in cgem_stop(); before,
>  it wasn't properly unloading dma maps due to a cut-and-paste error.
> 

It’s generally a very bad idea to create and destroy maps for every transaction.  If the map
results in being non-NULL, then you’re allocating and freeing memory on every transaction,
and possibly allocating and freeing large chunks of memory for bounce buffers.  Is there
a reason why you’ve made this change?

Thanks,
Scott