Dear Dave and Turgis,
Thanks for your replying.
I have run oprofile on OMAP4460, but there are many problems.
My test env is:
oprofile version: 0.9.7
Android ver: ICS
kernel ver: 3.0
CPU: OMAP4460
Oprofile ran abnormally after I patched the kernel with a patch from
http://omappedia.org/wiki/Android_Debugging#OProfile_on_OMAP4; .
Step1:
# opcontrol --setup
Step2:
# opcontrol --vmlinux=/vmlinux --kernel-range 0xc0046000,0xc009a000
--event CPU_CYCLES:25000000
I analysed the log after send the command "dmesg", found that the PMU
interrupt enable control bit has been modified,
the oprofile can not work in PMU mode.
But when I patch the kernel with a patch from
http://ssvb.github.com/2011/08/23/yet-another-oprofile-tutorial.html.
The oprofile can work in hrtimer mode.
Could you share some suggestions?
--------------
zachary6626
>Hi Dave,
>
>By the way, in
>http://lists.linaro.org/pipermail/linaro-dev/2011-September/thread.html#7560,
>we discussed about oprofile timer mode granularity for platforms, which had
>the PMU bug that loses PMU interrupts (4430, 4460 and maybe 4470).
>Was this timer granularity proposed/introduced ? Is it in fact part of perf
>infrastructure (don't know if perf relies directly on oprofile
>drivers/oprofile infrastructuret) ?
>
>Regards
>Fred
>
>OMAP Platform Business Unit - OMAP System Engineering - Platform Enablement -
>System Multimedia
>
>>
>Texas Instruments France SA, 821 Avenue Jack Kilby, 06270 Villeneuve Loubet.
>036 420 040 R.C.S Antibes. Capital de EUR 753.920
>
>-----Original Message-----
>> From: linaro-dev-boun...@lists.linaro.org
>> [mailto:linaro-dev-boun...@lists.linaro.org] On Behalf Of
>> Dave Martin
>> Sent: Thursday, March 01, 2012 9:57 AM
>> To: zachary6626
>> Cc: linaro-dev
>> Subject: Re: Do ARM Cortex-A9 PMU supoort oprofile
>>
>> On Wed, Feb 29, 2012 at 11:21:58PM +0800, zachary6626 wrote:
>> > Sorry disturbing you!
>> >
>> > I have ask google for do ARM Cortex-A9 PMU supoort oprofile, but it do not
>> > have a answer definitely
>> .
>> >
>> > So i ask you do ARM Cortex-A9 PMU supoort oprofile.
>> >
>> > Can u help me?
>>
>> In general, yes it does work. But board support is needed in addition
>> to the CPU PMU support.
>>
>> If you're trying to work on omap4 (panda) you may need some extra
>> patches:
>>
>>
>> For more information on this, take a look at the following thread where
>> this issue was discussed recently:
>>
>> http://lists.linaro.org/pipermail/linaro-dev/2012-February/010326.html
>>
>> Cheers
>> ---Dave
>>
>> _______________________________________________
>> linaro-dev mailing list
>> linaro-dev@lists.linaro.org
>> http://lists.linaro.org/mailman/listinfo/linaro-dev
>
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