[Bug 1321425] Re: irqbalance spams syslog about affinity_hint subset empty

[Jorge Niedbalski]

@arges,

I just re-applied the attached Trusty Patch into the current trusty-
updates version without issues.

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https://bugs.launchpad.net/bugs/1321425

Title:
  irqbalance spams syslog about affinity_hint subset empty

Status in irqbalance package in Ubuntu:
  Fix Released
Status in irqbalance source package in Trusty:
  In Progress
Status in irqbalance source package in Utopic:
  In Progress
Status in irqbalance source package in Vivid:
  In Progress

Bug description:
  [Environment]

  /var/log/syslog has repeating
  May 20 14:39:28 txsllabc7k001 /usr/sbin/irqbalance: irq 121 affinity_hint subset empty
  May 20 14:39:28 txsllabc7k001 /usr/sbin/irqbalance: irq 123 affinity_hint subset empty
  May 20 14:39:28 txsllabc7k001 /usr/sbin/irqbalance: irq 125 affinity_hint [Repeat]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: irqbalance 1.0.6-2
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.1
  Architecture: amd64
  Date: Tue May 20 14:19:32 2014
  ExecutablePath: /usr/sbin/irqbalance
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
  SourcePackage: irqbalance
  UpgradeStatus: No upgrade log present (probably fresh install)

  [Impact]

  Syslog writes a repeated set of affinity_hint entries, affecting logs
  visibility and potentially causing high disk usage.

  [Test]

  - Install irqbalance package.
  - Enable /etc/default/irqbalance
  #Configuration for the irqbalance daemon
  #Should irqbalance be enabled?
  ENABLED="1"
  - Start (service start irqbalance)

  [Regression Potential]

  - None is expected.

  [Other Info]

  The fix is to only warn once for affinity hint subset empty irqs.
  (See: https://github.com/Irqbalance/irqbalance/commit/c9e5f36fe91d2d04d013d96f1093419245585de7)

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