diff options
| author | Gary King <GKing@nvidia.com> | 2010-01-29 17:46:27 -0800 |
|---|---|---|
| committer | Gary King <GKing@nvidia.com> | 2010-02-02 10:52:45 -0800 |
| commit | 40c86b9c228b7b04300c52dd8955e9dc585ba881 (patch) | |
| tree | 88ceedf3d19c7abc1afb95863a3f193314fbfbf5 /arch/arm/mm/cache-v4wt.S | |
| parent | 8b8ffa33276fc5b2069a14724ce82cdeaf7e848c (diff) | |
[ARM] expose full data cache clean and flush DMA maintenance
drivers which perform DMA mapping can optimize necessary cache
maintenance by using a full-cache clean or flush rather than
looping over large regions line-by-line.
there was no previous full-cache operation other than
flush_kern_cache_all, and this operation both invalidates the
data cache (not always necessary) and invalidates the instruction
cache, both of which unnecessarily hurt performance on CPUs with
Harvard caches
Change-Id: If71015525457e9e7e481fc2afcdc76bc3fa8f8f4
Diffstat (limited to 'arch/arm/mm/cache-v4wt.S')
| -rw-r--r-- | arch/arm/mm/cache-v4wt.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S index c54fa2cc40e6..1dfe16103e42 100644 --- a/arch/arm/mm/cache-v4wt.S +++ b/arch/arm/mm/cache-v4wt.S @@ -184,4 +184,6 @@ ENTRY(v4wt_cache_fns) .long v4wt_dma_inv_range .long v4wt_dma_clean_range .long v4wt_dma_flush_range + .long v4wt_flush_kern_cache_all + .long v4wt_flush_kern_cache_all .size v4wt_cache_fns, . - v4wt_cache_fns |