Hi,
I am struggling to run perf tool on u8500 as hwpacks for 2.6.35 kernel are still not out. Can someone help me know if anyone is using perf on arm-based board such as panda, beagle etc.
Ideally, I would like to start a firefox application, and run command 'perf stat -p <pid_of_firefox> -e cycles sleep 1'
Regards, Sudip
On Wed, Feb 2, 2011 at 4:32 AM, Sudip Jain sudip.jain@linaro.org wrote:
Hi, I am struggling to run perf tool on u8500 as hwpacks for 2.6.35 kernel are still not out. Can someone help me know if anyone is using perf on arm-based board such as panda, beagle etc. Ideally, I would like to start a firefox application, and run command 'perf stat -p <pid_of_firefox> -e cycles sleep 1' Regards, Sudip
I have seen perf work on beagle, though I've not tried it for a while, and I've not tried it on Panda.
What's the exact problem you're having? Is perf not working at all, or does it appear to work but not count any events?
Cheers ---Dave
On Wed, Feb 2, 2011 at 10:31 AM, Dave Martin dave.martin@linaro.org wrote:
On Wed, Feb 2, 2011 at 4:32 AM, Sudip Jain sudip.jain@linaro.org wrote:
Hi, I am struggling to run perf tool on u8500 as hwpacks for 2.6.35 kernel are still not out. Can someone help me know if anyone is using perf on arm-based
I also just had a chat with Will--- it sounds like getting perf working on u8500 still needs some effort, because of the way the PMU interrupts are wired up on this particular platform.
See this thread: http://thread.gmane.org/gmane.linux.ports.arm.kernel/103108/
I believe that Lee and Linus are more closely involved and may be able to comment on this.
Cheers ---Dave
On 02/02/11 11:20, Dave Martin wrote:
On Wed, Feb 2, 2011 at 10:31 AM, Dave Martin dave.martin@linaro.org wrote:
On Wed, Feb 2, 2011 at 4:32 AM, Sudip Jain sudip.jain@linaro.org wrote:
Hi, I am struggling to run perf tool on u8500 as hwpacks for 2.6.35 kernel are still not out. Can someone help me know if anyone is using perf on arm-based
I also just had a chat with Will--- it sounds like getting perf working on u8500 still needs some effort, because of the way the PMU interrupts are wired up on this particular platform.
See this thread: http://thread.gmane.org/gmane.linux.ports.arm.kernel/103108/
I believe that Lee and Linus are more closely involved and may be able to comment on this.
I'd like to address this issue soon.
Before I do so, I'd like Russel's blessing, as my time is too valuable to waste.
On Wed, 2 Feb 2011, Lee Jones wrote:
On 02/02/11 11:20, Dave Martin wrote:
On Wed, Feb 2, 2011 at 10:31 AM, Dave Martin dave.martin@linaro.org wrote:
On Wed, Feb 2, 2011 at 4:32 AM, Sudip Jain sudip.jain@linaro.org wrote:
Hi, I am struggling to run perf tool on u8500 as hwpacks for 2.6.35 kernel are still not out. Can someone help me know if anyone is using perf on arm-based
I also just had a chat with Will--- it sounds like getting perf working on u8500 still needs some effort, because of the way the PMU interrupts are wired up on this particular platform.
See this thread: http://thread.gmane.org/gmane.linux.ports.arm.kernel/103108/
I believe that Lee and Linus are more closely involved and may be able to comment on this.
I'd like to address this issue soon.
Before I do so, I'd like Russel's blessing, as my time is too valuable to waste.
You might waste more time waiting for it. Your best bet is probably to come up with an actual patch for the discussion to start. And that's typical of many people not only Russell.
Nicolas
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Dave Martin -
Lee Jones -
Nicolas Pitre -
Sudip Jain