Re: [ath9k-devel] ath9k: massive unexplained latency in 2.6.27 (rc5, rc6, probably others)

Steven Rostedt
2008-09-27T01:23:32Z

I hate trips where my email box becomes filled. I skip over a lot of
emails that I should not have.

On Fri, 19 Sep 2008, Ingo Molnar wrote:
>
> What is needed is to set kernel/trace/trace.c's tracing_disabled
> variable to 0. I've Cc:-ed Steve Rostedt - Steve, why is there no easy
> ad-hoc way to trigger a stop-tracing event without elaborate changes?

I think I added a way to do this. Hmm, I think it was in -rt that I added
it, and have not gotten around to sending you the updates.

Yes, we need an easy way to disable the tracer. I think we have
ftrace_disable() function. Perhaps that only disables tracing that checks
the tracing_disabled variable.

Anyway, I made sure the new ring_buffer code has an easy way to disable
it.

-- Steve