Re: [RFC PATCH v3 1/4] STM trace event: Adding generic buffer interface driver

From: Alexander Shishkin
Date: Wed Jul 08 2015 - 09:09:43 EST


Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:

> On Tue, Jul 07, 2015 at 06:10:40PM +0800, Chunyan Zhang wrote:
>> +config STM_TRACE_EVENT
>> + tristate "Redirect/copy the output from kernel trace event to STM engine"
>
> How does tristate make sense here? You're using it unconditionally for
> in-kernel tracepoints. This must be bool, which in turn makes the whole
> STM thing bool afaiu.

That would make the whole STM thing a bool. I'd rather we used stm
output *conditionally* by somehow plugging into tracepoint output, say
with a jump label or something. Haven't had time to think about it yet.

Regards,
--
Alex
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