From: Lendacky, Thomas <Thomas.Lendacky@amd.com>
Date: Wed, 2 Jul 2014 18:04:46 +0000 (-0500)
Subject: amd-xgbe: Performance enhancements
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~149^2~216^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9867e8fb2c45888cc594457914dcbba599f086c8;p=pandora-kernel.git

amd-xgbe: Performance enhancements

This patch provides some general performance enhancements for the
driver:
  - Modify the default coalescing settings (reduce usec, increase frames)
  - Change the AXI burst length to 256 bytes (default was 16 bytes which
    was smaller than a cache line)
  - Change the AXI cache settings to write-back/write-allocate which
    allocate cache entries for received packets during the DMA since the
    packet will be processed soon afterwards
  - Combine ioread/iowrite when disabling both the Tx and Rx interrupts
  - Change to processing the Tx/Rx channels in pairs
  - Only recycle the Rx descriptors when a threshold of dirty descriptors
    is reached

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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