Re: status of: tasklet_unlock_wait() causes soft lockup with -rtand ieee1394 audio

From: Pieter Palmers
Date: Sat Jan 27 2007 - 05:21:57 EST


Ingo Molnar wrote:
* Pieter Palmers <pieterp@xxxxxxx> wrote:

Dear all,

What is the status with respect to this problem? I see that in the current -rt patch the problematic code piece is different. I personally haven't tried to reproduce this myself on a more recent kernel, but I just got a report from one of our users who experienced the same problem with 2.6.19-rt15 and RT preemption (desktop preemption works fine).

Should the latest -rt patches be fixed with respect to this issue? If so I'll try and test them, otherwise I omit the effort.

it's not fixed yet. Could you try the patch below?

I just compiled & installed 2.6.20-rc6-rt2, and I saw that this patch was in the -rt2 patch, so I gave real-time preemption a shot. It seems to work, I don't experience lockups anymore.

Thanks for the fix,

Pieter
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