tree 64a52ffcfb4107bd240bbf67a783c0d0dcd508b2
parent b9f6ed2bab0b087bdff870b7173f1d89efd96e54
author Alexander Duyck <alexander.h.duyck@intel.com> 1328687399 +0000
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1331610768 -0700

ixgbe: Allocate rings as part of the q_vector

This patch makes the rings a part of the q_vector directly instead of
indirectly.  Specifically on x86 systems this helps to avoid any cache
set conflicts between the q_vector, the tx_rings, and the rx_rings as the
critical stride is 4K and in order to cross that boundary you would need to
have over 15 rings on a single q_vector.

In addition this allows for smarter allocations when Flow Director is
enabled.  Previously Flow Director would set the irq_affinity hints based
on the CPU and was still using a node interleaving approach which on some
systems would end up with the two values mismatched.  With the new approach
we can set the affinity for the irq_vector and use the CPU for that
affinity to determine the node value for the node and the rings.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>