[PATCH] dma-mapping: bypass indirect calls for dma-direct

Thu Dec 6 17:40:27 UTC 2018

On Thu,  6 Dec 2018 07:37:20 -0800
Christoph Hellwig <hch at lst.de> wrote:

> Avoid expensive indirect calls in the fast path DMA mapping
> operations by directly calling the dma_direct_* ops if we are using
> the directly mapped DMA operations.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---
>  include/linux/dma-direct.h  |  17 -----
>  include/linux/dma-mapping.h | 138 +++++++++++++++++++++++++++++++-----
>  kernel/dma/direct.c         |  13 ++--
>  3 files changed, 127 insertions(+), 41 deletions(-)

Hi Christoph,

Is this patch to be applied on top of the other (41) patches I just
tested with my XDP forward workload?

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer