oprofile and ARM A9 hardware counter

[stephane eranian]

Started afresh from:

90a4c0f uml: fix compile for x86-64

And added 3, 4, 5, 6:
603c316 arm: omap4: pmu: support runtime pm
4899fbd arm: omap4: support pmu
d737bb1 arm: omap4: create pmu device via hwmod
4e0259e arm: omap4: hwmod: introduce emu hwmod

Still no interrupts firing. I am using your .config file.

My HW:
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x1
CPU part	: 0xc09
CPU revision	: 2

Hardware	: OMAP4 Panda board
Revision	: 0020

There must be something I am missing here.



On Thu, Jan 19, 2012 at 6:07 PM, stephane eranian
<eranian at googlemail.com> wrote:
> 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