oprofile on OMAP2: ARM11 PMU interrupts?
Is anyone using oprofile on OMAP2?
A quick test of the current code in current git doesn't seem to work. I see the PMU being configured, IRQ3 being registered but no interrupts ever fire on that IRQ, and thus no data is collected.
I tested on a 2420/H4 and 2430SDP with same results. In both cases, the IRQ is configured to IRQ3, which in the TRM says 'BENCH MPU emulation'.
I have no idea what that means, but it doesn't sound like the ARM11 PMU
interrupt to me though.
Any ideas?
Kevin
Hi Kevin,
Yes, several people are using it locally on SDP2430 for measurements. It is pretty neat.
Yes IRQ3 is correct I believe.
There is a patch around which makes it work on ML4.1 which someone did a while back. Last comment I saw was Russell's base patch had a few mistakes when needed fixing.
I'll take a look for the path and send you a copy. Perhaps you can push out fixes as your currently interested.
Regards,
Richard W.
Quoted 18 lines
Is anyone using oprofile on OMAP2?
A quick test of the current code in current git doesn't seem to work. I see the PMU being configured, IRQ3 being registered but no interrupts ever fire on that IRQ, and thus no data is collected.
I tested on a 2420/H4 and 2430SDP with same results. In both cases, the IRQ is configured to IRQ3, which in the TRM says 'BENCH MPU emulation'.
I have no idea what that means, but it doesn't sound like the ARM11 PMU
interrupt to me though.Any ideas?
Kevin
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FYI: Refer to the following article
http://blog.gustavobarbieri.com.br/2007/05/22/oprofile-and-maemo-n800/
I saw this article a month ago, but I also don't test it. It needs the Oprofile modification.
Thank you,
Kyungmin Park
Quoted 44 lines
-----Original Message-----
From: [email protected] [mailto:linux-omap-open-source- [email protected]] On Behalf Of Woodruff, Richard
Sent: Saturday, October 27, 2007 5:53 AM
To: Kevin Hilman; Linux OMAP
Subject: RE: oprofile on OMAP2: ARM11 PMU interrupts?Hi Kevin,
Yes, several people are using it locally on SDP2430 for measurements. It is pretty neat.
Yes IRQ3 is correct I believe.
There is a patch around which makes it work on ML4.1 which someone did a while back. Last comment I saw was Russell's base patch had a few mistakes when needed fixing.
I'll take a look for the path and send you a copy. Perhaps you can push out fixes as your currently interested.
Regards,
Richard W.Quoted 11 lines
Is anyone using oprofile on OMAP2?
A quick test of the current code in current git doesn't seem to work. I see the PMU being configured, IRQ3 being registered but no interrupts ever fire on that IRQ, and thus no data is collected.
I tested on a 2420/H4 and 2430SDP with same results. In both cases, the IRQ is configured to IRQ3, which in the TRM says 'BENCH MPU emulation'.
I have no idea what that means, but it doesn't sound like the ARM11 PMU
interrupt to me though.Quoted 7 lines
Any ideas?
Kevin
_______________________________________________
Linux-omap-open-source mailing list
[email protected]
http://linux.omap.com/mailman/listinfo/linux-omap-open-source_______________________________________________
Linux-omap-open-source mailing list
[email protected]
http://linux.omap.com/mailman/listinfo/linux-omap-open-source
Quoted 7 lines · Kyungmin Park
FYI: Refer to the following article
http://blog.gustavobarbieri.com.br/2007/05/22/oprofile-and-maemo-n800/
I saw this article a month ago, but I also don't test it. It needs the Oprofile modification.
Yeah, I've seen various patches to the oprofile tools floating around for ARMv6 support, but from what I can see so far, these are incoporated into oprofile 0.9.3, which I still haven't got working on my 2430.
Kevin