ColdFire/68K Microcontrollers and ProcessorsのトピックRunning oprofile on mcf5445x platforms

Running oprofile on mcf5445x platforms

mjlear — Tue, 12 May 2009 23:07:41 GMT

Hello all - I have an mcf54455 evb and I'm trying to run oprofile. I'm running 2.6.23 and 2.6.25 kernels (the former from ltib-mcf5445x-20071214, the latter obtained from the gpp). However, both kernels are missing the config options to enable profiling. It seems, to all intents and purposes, that profiling just isn't supported in the coldfire kernels. Is this correct?

Has anybody actually got oprofile running and working successfully on coldfire? I have had a dig around the forum and found various postings but nothing I can glean any information from.

Any feedback would be much appreciated.

Thanks.

Re: Running oprofile on mcf5445x platforms

fsl_linux_spt — Sat, 16 May 2009 03:26:50 GMT

Oprofile is not supported. I looked around on the internet and it does not look like this is supported on any coldfire processor.

Looking in the kernel source this option is dependent on HAVE_OPROFILE. There are several arch/<specific_arch>/Kconfig files that "select HAVE_OPROFILE" but the m68k and m68knommu do not.

Re: Running oprofile on mcf5445x platforms

mjlear — Mon, 18 May 2009 18:22:41 GMT

Apart from readprofile & /proc/profile (standard kernel profiling infrastructure), what profiling environment is supported on coldfire (if any)?