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Jacob Keller c0cf70a6fc i40e: don't add more vectors to num_lan_msix than number of CPUs
This is a solution to avoid adding too many queues to num_lan_msix.
A recent refactor of queue pairs accidentally added all remaining
vectors to the num_lan_msix which can have adverse performance issues,
due to enabling more queues than the number of CPU cores.

This patch removes the old calculation, and replaces it with a simple
algorithm.

1) add queue pairs up to num_online_cpus(), but capped at half of total
   vectors
2) then add alternative features such as flow directory and similar
3) finally, add the remaining vectors back to queue pairs, but capped
   such that the total number of queue pairs does not exceed
   num_online_cpus().

Change-ID: I668abf67d5011a1248866daba8885f4ff00cb8d9
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Harshitha Ramamurthy <harshitha.ramamurthy@intel.com>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-03-15 01:57:44 -07:00
arch Second batch of KVM changes for 4.11 merge window 2017-03-04 11:36:19 -08:00
block
certs
crypto
Documentation dt-bindings: net: update bcmgenet binding for GENETv5 2017-03-13 21:51:50 -07:00
drivers i40e: don't add more vectors to num_lan_msix than number of CPUs 2017-03-15 01:57:44 -07:00
firmware
fs
include qed*: Add support for QL41xxx adapters 2017-03-14 11:43:30 -07:00
init
ipc
kernel bpf: add get_next_key callback to LPM map 2017-03-05 17:55:29 -08:00
lib
mm
net lwtunnel: remove unused but set variable 2017-03-13 23:55:45 -07:00
samples
scripts
security
sound
tools tools: hv: Add clean up function for Ubuntu config 2017-03-06 17:10:40 -08:00
usr
virt Second batch of KVM changes for 4.11 merge window 2017-03-04 11:36:19 -08:00
.cocciconfig
.get_maintainer.ignore
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CREDITS
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MAINTAINERS net: dwc-xlgmac: Initial driver for DesignWare Enterprise Ethernet 2017-03-09 13:29:27 -08:00
Makefile
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.