staging: vc04_services: add vchiq_pagelist_info structure

The current dma_map_sg based implementation for bulk messages
computes many offsets into a single allocation multiple times in
both the create and free code paths.  This is inefficient,
error prone and in fact still has a few lingering issues
with arm64.

This change replaces a small portion of that inplementation with
new code that uses a new struct vchiq_pagelist_info to store the
needed information rather then complex offset calculations.

This improved implementation should be more efficient and easier
to understand and maintain.

Tests Run(Both Pass):
vchiq_test -p 1
vchiq_test -f 10

Signed-off-by: Michael Zoran <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions