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[Michael Heuberger <michael.heuberger@xxxxxxxxxxxxxxxxx>]

Public bug reported:

In the dmesg output for my Ubuntu 14.04 kernel I see these lines, saying
that bus cycles are unavailabe:

[    0.198024] Performance Events: PEBS fmt1+, 16-deep LBR, Nehalem events, Intel PMU driver.
[    0.198029] perf_event_intel: CPU erratum AAJ80 worked around
[    0.198031] perf_event_intel: CPUID marked event: 'bus cycles' unavailable
[    0.198033] ... version:                3
[    0.198034] ... bit width:              48
[    0.198035] ... generic registers:      4
[    0.198036] ... value mask:             0000ffffffffffff
[    0.198037] ... max period:             000000007fffffff
[    0.198038] ... fixed-purpose events:   3
[    0.198039] ... event mask:             000000070000000f

Any ideas how I can make them available?

Thanks
Michael

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1353913

Title:
  perf_event_intel: CPUID marked event: 'bus cycles' unavailable

Status in “linux” package in Ubuntu:
  New

Bug description:
  In the dmesg output for my Ubuntu 14.04 kernel I see these lines,
  saying that bus cycles are unavailabe:

  [    0.198024] Performance Events: PEBS fmt1+, 16-deep LBR, Nehalem events, Intel PMU driver.
  [    0.198029] perf_event_intel: CPU erratum AAJ80 worked around
  [    0.198031] perf_event_intel: CPUID marked event: 'bus cycles' unavailable
  [    0.198033] ... version:                3
  [    0.198034] ... bit width:              48
  [    0.198035] ... generic registers:      4
  [    0.198036] ... value mask:             0000ffffffffffff
  [    0.198037] ... max period:             000000007fffffff
  [    0.198038] ... fixed-purpose events:   3
  [    0.198039] ... event mask:             000000070000000f

  Any ideas how I can make them available?

  Thanks
  Michael

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