Re: [PATCH] sched: Provide iowait counters

[Arjan van de Ven]

Peter Zijlstra wrote:
> It might be nice to put a tracepoint there as well, now if there was a
> way to specify perf counter attributes in the TRACE_EVENT() magic so
> that we can feed stuff into perf_tpcounter_event().
>
> TP_perf_addr()  -- defaults to 0 when not specified
> TP_perf_count() -- defaults to 1 when not specified.
>
> Steve, Frederic, is there any way to make that happen?
>
> Failing that we could put an actual swcounter in there I suppose.
>
> That way we could profile applications based on IO-wait, which would be
> cool.

it'd be nice if this was also a perfcounter event, no doubt about that
(I already have some usages in mind).... but that'd be a separate patch.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/