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[Bug 1048056] Missing required logs.


This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1048056

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: precise

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  perf_event_open syscall fails for HW counters on Pandaboard

Status in Linaro Texas Instruments Landing Team:
Status in “linux” package in Ubuntu:

Bug description:
  On Pandaboard perf_event_open syscall fails with errno = 19 (ENODEV)
  when trying to open perf counter with type PERF_TYPE_HARDWARE.

  The code to reproduce the error is attached. I checked that it runs
  successfully on Beagleboard, Sandy Bridge, Bulldozer systems, and even
  on Pandaboard if I request software events (e.g. type =

  Linux Kernel (uname -a): Linux pandaboard 3.2.0-1418-omap4 #25-Ubuntu SMP PREEMPT Fri Aug 31 18:41:31 UTC 2012 armv7l armv7l armv7l GNU/Linux
  Distribution: Ubuntu Server 12.04
  Loaded kernel modules (lsmod): cpufreq_powersave, cpufreq_conservative, cpufreq_userspace, cpufreq_ondemand, dm_crypt, wl12xx_sdio, wl12xx, mac80211, twl6040_vibra, ff_memless, cfg80211, leds_gpio
  Kernel log (dmesg): contains message "hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available"
  /proc/cpuinfo content:
  Processor	: ARMv7 Processor rev 10 (v7l)
  processor	: 0
  BogoMIPS	: 696.39

  processor	: 1
  BogoMIPS	: 681.68

  Features	: swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls 
  CPU implementer	: 0x41
  CPU architecture: 7
  CPU variant	: 0x2
  CPU part	: 0xc09
  CPU revision	: 10

  Hardware	: OMAP4 Panda board
  Revision	: 0020
  Serial		: 0000000000000000

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