From: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Date: Sun, 5 Nov 2006 20:42:20 +0000 (+0100)
Subject: IB/ehca: Activate scaling code by default
X-Git-Tag: v2.6.19-rc6~24^2~3
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2c238a0c5e155acd49752c5fb93fb8d8534232b;p=linux-2.6

IB/ehca: Activate scaling code by default

Change ehca's Kconfig to activates scaling code as default.  After
several measurements we saw that this feature prevents dropped packets
(UD) in stress situation. Thus, enabling it helps to improve ehca's
bandwidth through IPoIB.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/ehca/Kconfig b/drivers/infiniband/hw/ehca/Kconfig
index 922389b643..727b10d896 100644
--- a/drivers/infiniband/hw/ehca/Kconfig
+++ b/drivers/infiniband/hw/ehca/Kconfig
@@ -10,6 +10,7 @@ config INFINIBAND_EHCA
 config INFINIBAND_EHCA_SCALING
 	bool "Scaling support (EXPERIMENTAL)"
 	depends on IBMEBUS && INFINIBAND_EHCA && HOTPLUG_CPU && EXPERIMENTAL
+	default y
 	---help---
 	eHCA scaling support schedules the CQ callbacks to different CPUs.