Re: [PATCH 4/7] tracing: timer: Add deferrable flag to timer_start

Ingo Molnar
2015-05-24T06:20:49Z

* Ingo Molnar <mingo@kernel.org> wrote:

> > [...] So the field size is available for the tool. If the tool
> > blindly applies the format string, it's hardly a fault of the
> > kernel. And there is no point to bloat 32bit tracing with 64bit
> > entries just because some random tool might be stupid.
>
> Yeah, in a perfect world and so we could define arbitrarily complex
> interfaces and expect tooling to follow it.

OTOH, on a second thought, libtraceevent handles this correctly, so
the chance for tooling to get this wrong is much smaller than for
other ABIs.

Plus the advantages on 32-bit systems you mentioned are real as well -
so I concur with you.

Thanks,

Ingo