• Linus Torvalds's avatar
    Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · f5709176
    Linus Torvalds authored
    Pull x86 cache quality monitoring update from Thomas Gleixner:
     "This update provides a complete rewrite of the Cache Quality
      Monitoring (CQM) facility.
    
      The existing CQM support was duct taped into perf with a lot of issues
      and the attempts to fix those turned out to be incomplete and
      horrible.
    
      After lengthy discussions it was decided to integrate the CQM support
      into the Resource Director Technology (RDT) facility, which is the
      obvious choise as in hardware CQM is part of RDT. This allowed to add
      Memory Bandwidth Monitoring support on top.
    
      As a result the mechanisms for allocating cache/memory bandwidth and
      the corresponding monitoring mechanisms are integrated into a single
      management facility with a consistent user interface"
    
    * 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
      x86/intel_rdt: Turn off most RDT features on Skylake
      x86/intel_rdt: Add command line options for resource director technology
      x86/intel_rdt: Move special case code for Haswell to a quirk function
      x86/intel_rdt: Remove redundant ternary operator on return
      x86/intel_rdt/cqm: Improve limbo list processing
      x86/intel_rdt/mbm: Fix MBM overflow handler during CPU hotplug
      x86/intel_rdt: Modify the intel_pqr_state for better performance
      x86/intel_rdt/cqm: Clear the default RMID during hotcpu
      x86/intel_rdt: Show bitmask of shareable resource with other executing units
      x86/intel_rdt/mbm: Handle counter overflow
      x86/intel_rdt/mbm: Add mbm counter initialization
      x86/intel_rdt/mbm: Basic counting of MBM events (total and local)
      x86/intel_rdt/cqm: Add CPU hotplug support
      x86/intel_rdt/cqm: Add sched_in support
      x86/intel_rdt: Introduce rdt_enable_key for scheduling
      x86/intel_rdt/cqm: Add mount,umount support
      x86/intel_rdt/cqm: Add rmdir support
      x86/intel_rdt: Separate the ctrl bits from rmdir
      x86/intel_rdt/cqm: Add mon_data
      x86/intel_rdt: Prepare for RDT monitor data support
      ...
    f5709176
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