oprofile and ARM A9 hardware counter

[stephane eranian]

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
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.

> 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,
>  };
>
>  static struct clockdomain l3_dma_44xx_clkdm = {