Re: [PATCH 4/7] tracing: timer: Add deferrable flag to timer_start
From: Ingo Molnar
Date: Sun May 24 2015 - 02:21:19 EST
* Ingo Molnar <mingo@xxxxxxxxxx> 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
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