ARM A9 oprofile

[Andrey Konovalov]

Hi Dmitry,

On 02/22/2012 07:17 PM, Dave Martin wrote:
> On Wed, Feb 22, 2012 at 06:41:22PM +0400, Dmitry Antipov wrote:
>> On 02/22/2012 05:59 PM, Dave Martin wrote:
>>
>>> However, the way that the performance counter interrupts are routed is
>>> dependent on the SoC.  OMAP4 and later have an unusual way of doing this,
>>> which is why perf doesn't currently work upstream for these platforms.
>>
>> But will it work on Panda board with linux-linaro-3.3-rc3-2012.02-1 at least?

WRT perf, the linux-linaro-3.3-rc3-2012.02-1 kernel shouldn't be 
different from the mainline v3.3-rc3. It has the following stuff
(about 50 commits) on top of v3.3-rc3:
   * samsung_cpuidle_l2_retention patch set from the power management WG
   * thermal_cpu_cooling patch set from the power management WG
   * irq_domain patch set from Grant L. (cherry-picked from linux-next)
   * Fix for https://bugs.launchpad.net/bugs/918412
   * Basic device tree board support for supported ARM boards
     (comes from linux-linaro-3.1)
   * sched: Ensure cpu_power periodic update (Vincent G.)
   * ARM: kprobes: work around build errors (Arnd B.)
   * usb: ehci: make HC see up-to-date qh/qtd descriptors ASAP (Ming L.)
   * Perf: Fallback to /bin/more if less is not found for perf pager 
(Avik S.)

A full change log against the 3.3-rc3 release is available at:
 
http://launchpad.net/linux-linaro/3.3/3.3-rc3-2012.02/+download/CHANGELOG-linux-linaro-3.3-rc3-2012.02-1


If there is something specific in the kernel for Panda, you could
also try the most recent release of TI Landing Team's kernel:
http://launchpad.net/linaro-landing-team-ti/trunk/2012.01/+download/linux-release-2012-01.tar.bz2
referenced as linux-linaro-lt-ti (version 3.2-2012.01) from 
http://www.linaro.org/downloads
LEB and LT kernels have much more board specific code then 
linux-linaro-3.3-rc3-2012.02-1.

Thanks,
Andrey

> Hopefully one of the other guys has the answer... I don't know,
> unfortunately.
>
> Cheers
> ---Dave
>
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