Re: [patch 0/3] j_state_lock, j_list_lock, remove-bitlocks

Steven Rostedt
2005-03-17T07:15:37Z

On Wed, 16 Mar 2005, Lee Revell wrote:

> I am a bit confused, big surprise. Does this thread still have anything
> to do with this trace from my "Latency regressions" bug report?

Don't worry, I've been in a state of confusion for a long time now ;-)

>
> http://www.alsa-project.org/~rlrevell/2912us
>
> The problem only is apparent with PREEMPT_DESKTOP and "data=ordered".
>
> PREEMPT_RT has always worked perfectly.
>

I'm surprise that PREEMPT_RT does work. I'm no longer sure that this does
affect your latency anymore. It probably does indirectly somehow. I
still think it has to do with the bitspinlocks. But I'm not sure. Just
let me know if you want to be taken off this thread and I'll remove you
from my CC list. Until then, I'll keep you on.

-- Steve