Re: Removal of events for unsupported architectures or processor models

On Wed, Jul 23, 2014 at 09:17:43AM -0500, Maynard Johnson wrote:
> Not a stupid question at all. Right now, timer mode is
> supported only with the "legacy" opcontrol-based profiler.
> The operf profiler could, theoretically, support a timer-like option
> (e.g., configuring perf_events with PERF_COUNT_SW_CPU_CLOCK). I've not
> been motivated to add this myself, but would certainly review patches
> if anyone would like to contribute such support (after 1.0 is released).
> But that may not help for your OMAP case anyway if perf_events is not
> supported at all for that processor type.

Ok, thanks, I will try look into this at some point. I'm not yet too
familiar with the perf world, but I think OMAP should support perf_events
in general, but it's just some chip revisions where the HW counters
could not be used / did not work.

> So, as I mentioned already, for those architectures or specific
> processor types that are not supported by perf_events, users should use
> opcontrol with oprofile release 0.9.9.

Right, but I would also like to stick with a single SW version / source
tree for all my platforms. :)

A.

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