oprofile and ARM A9 hardware counter

[stephane eranian]

Just did a fresh clone of Linus' tree:

$ git log --oneline | fgrep 'allow platform specific'
e0516a6 arm: pmu: allow platform specific irq enable/disable handling

$ git log --oneline | fgrep 'cross trigger'
14eec97 arm: introduce cross trigger interface helpers

Unless you were referring to a different pair of patches.


On Thu, Jan 19, 2012 at 2:51 PM, Ming Lei <ming.lei at canonical.com> wrote:
> Hi,
>
> On Thu, Jan 19, 2012 at 9:32 PM, stephane eranian
> <eranian at googlemail.com> wrote:
>> On Thu, Jan 19, 2012 at 2:26 PM, Ming Lei <ming.lei at canonical.com> wrote:
>>> Hi,
>>>
>>> On Thu, Jan 19, 2012 at 9:14 PM, Ming Lei <ming.lei at canonical.com> wrote:
>>>> On Thu, Jan 19, 2012 at 8:51 PM, stephane eranian
>>>> <eranian at googlemail.com> wrote:
>>>>> On Thu, Jan 19, 2012 at 1:45 PM, Ming Lei <ming.lei at canonical.com> wrote:
>>>>>> Hi,
>>>>>>
>>>>>> On Thu, Jan 19, 2012 at 7:34 PM, stephane eranian
>>>>>> <eranian at googlemail.com> wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> Ok some update on this.
>>>>>>> With your .config file + 3.2.0 (Linus) + patch 3, 4, 5, 6, I get a kernel that
>>>>>>
>>>>>> You forget patch 1 and patch 2?
>>>>>>
>>>>> They are already in 3.2.0. Unless I am mistaken.
>>>>
>>>> Sorry, I just found that they have been merged to 3.2.
>>>
>>> After a double check, the two patches are not merged to 3.2, but have
>>> been merged to the latest linus tree and can be seen in 3.3-rc1.
>>>
>>> Also the commit 3c50729b(ARM: OMAP4: PM: Initialise all the clockdomains
>>> to supported states) has been merged to linus tree too.
>>>
>>> So if you just tested the latest linus tree simply, you need to apply
>>> the patch[1]
>>> (I have mentioned the problem in the thread.)
>>>
>>
>> Changing LMO, u-boot.bin did not help. Even with perf top I get no
>> interrupts.
>>
>> My Linus tree is at commit fa1952b:
>>
>> [6] 11891e1 arm: omap4: pmu: support runtime pm
>> [5] 25fab8a arm: omap4: support pmu
>> [4] fddef77 arm: omap4: create pmu device via hwmod
>>
>> fa1952b ARM: OMAP4: hwmod data: Add support for the debug modules
>
> Sorry, there is no commit fa1952b in linus[1] tree at all, so you are
> not testing
> linus tree...
>
> If you'd like to follow my instructions, I can help you further.
>
>> ccb19d2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
>> c3b5003 tg3: Fix single-vector MSI-X code
>>
>> I think [1] had conflicts when applying it to the tree.
>
> It is only one line(one character) change, you can do it manually.
>
>>
>>> thanks,
>>> --
>>> Ming Lei
>>>
>>> [1],
>>> diff --git a/arch/arm/mach-omap2/clockdomains44xx_data.c
>>> b/arch/arm/mach-omap2/clockdomains44xx_data.c
>>> index 9299ac2..41d2260 100644
>>> --- a/arch/arm/mach-omap2/clockdomains44xx_data.c
>>> +++ b/arch/arm/mach-omap2/clockdomains44xx_data.c
>>> @@ -390,7 +390,7 @@ static struct clockdomain emu_sys_44xx_clkdm = {
>>>       .prcm_partition   = OMAP4430_PRM_PARTITION,
>>>       .cm_inst          = OMAP4430_PRM_EMU_CM_INST,
>>>       .clkdm_offs       = OMAP4430_PRM_EMU_CM_EMU_CDOFFS,
>>> -       .flags            = CLKDM_CAN_HWSUP,
>>> +       .flags            = CLKDM_CAN_SWSUP,
>>>  };
>>>
>
> [1], http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=summary
>
> thanks,
> --
> Ming Lei