lkml.org 
[lkml]   [2005]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24
On Tue, 28 Jun 2005, Chuck Harding wrote:

> On Tue, 28 Jun 2005, Ingo Molnar wrote:
>
>>
>> * Ingo Molnar <mingo@elte.hu> wrote:
>>
>>> * Steven Rostedt <rostedt@goodmis.org> wrote:
>>>
>>>> Although turning off apm works, this is a fix to the symptom and not a
>>>> cure. Has someone already taken a look at this code? Since
>>>> apm_bios_call_simple calls local_save_flags and afterwards
>>>> raw_lock_irq_restore is then called. Shouldn't that have been
>>>> raw_local_save_flags?
>>>
>>> ah, indeed. I fixed this bug and have uploaded the -50-26 patch.
>>> Chuck, does this fix the APM problems for you?
>>
>> i've also uploaded -50-27 in which i've improved the irq-flags debugging
>> code. They are activated if CONFIG_DEBUG_PREEMPT is enabled, and can
>> come in two variants of kernel messages:
>>
>> BUG: bad raw irq-flag value 80000000, test/3810!
>> BUG: bad soft irq-flag value 00000202, test/3810!
>>
>> so we should now be able to detect mismatches of irq flags right where
>> they occur.
>>
>> Ingo
>
> Ack!! I didn't have that enabled so I am rebuilding again. One thing I've
> noticed is that sox seems to be hanging when it is trying to play a .wav
> file (for system beeps) and there aren't any error messages about what
> might be going on.
>
>

More info - sox is locked up so tight that no kill can stop it. I'm not
seeing any of the BUG messages either even though I enabled
CONFIG_DEBUG_PREEMPT.

--
Charles D. (Chuck) Harding <charding@llnl.gov> Voice: 925-423-8879
Senior Computer Associate ICCD Fax: 925-423-6961
Lawrence Livermore National Laboratory Computation Directorate
Livermore, CA USA http://www.llnl.gov GPG Public Key ID: B9EB6601
------------------ http://tinyurl.com/5w5ey -----------------------
-- LISP: To call a spade a thpade. --
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-06-29 02:59    [W:0.094 / U:2.736 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site