Messages in this thread | | | Subject | Re: [RFC][PATCH 1/5] [PATCH 1/5] events: Add EVENT_FS the event filesystem | From | Peter Zijlstra <> | Date | Wed, 17 Nov 2010 16:16:49 +0100 |
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On Wed, 2010-11-17 at 16:03 +0100, Ingo Molnar wrote: > I think Arjan's complaints at the KS stemmed from prior sporadic declarations on > lkml that there is no tracepoint ABI _at all_, and that powertop/latencytop could > break anytime.
And it will, afaik Arjan refused to even parse the format file which is part of the tracepoint abi and I'll be changing those for the scheduler.
I really object to not being able to make sane changes just because some tool is too lazy to even implement the full ABI that was exposed.
> I think Arjan's complaints at the KS stemmed from prior sporadic declarations on > lkml that there is no tracepoint ABI _at all_, and that powertop/latencytop could > break anytime.
I fully intent to break powertop/latencytop if they refuse to use the format file, deal with it.
Also, in the unlikely event we need to re-order the task->state bits I'll do so without a moments hesitation, regardless of who consumes them through the scheduler tracepoints, that's simply not stuff that should be tied down.
The same for anything that tries to interpret task->prio through the tracepoints.
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