** Tags removed: verification-needed-focal-linux-aws-5.15 
verification-needed-jammy-linux verification-needed-jammy-linux-aws-fips
** Tags added: verification-passed-focal-linux-aws-5.15 
verification-passed-jammy-linux verification-passed-jammy-linux-aws-fips

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https://bugs.launchpad.net/bugs/2052827

Title:
  performance: mm/memcontrol.c: remove the redundant updating of
  stats_flush_threshold

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Fix Committed

Bug description:
  This is a public version of https://bugs.launchpad.net/bugs/2034981

  Backport upstream commit:
     
      873f64b791a2 mm/memcontrol.c: remove the redundant updating of 
stats_flush_threshold

  to jammy.

  
  [Impact]

  
    Remove the redundant updating of stats_flush_threshold. If the global var 
stats_flush_threshold has exceeded the trigger value for 
__mem_cgroup_flush_stats, further increment is unnecessary.

  This is targeting Sapphire Rapids platforms.

  
  [Fix]

  Upstream commit 873f64b791a2 fixes this issue.  The fix involves not
  updating the status after a certain threshold has been hit as it is
  unnecessary.

  [Test Plan]

  I have tested the changes, and hit no regressions.

  [Where problems could occur]

  As the change has been upstream since 6.0-rc1, and is reducing a stats
  update which isn't needed, the change for regressions should be
  minimal.

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