Re: rt-preempt: problem compiling rt-preempt 2.6.23.1-rt11 on MIPS

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To: Thomas Gleixner <tglx@...>
Cc: Tim Bird <tim.bird@...>, linux kernel <linux-kernel@...>, Ingo Molnar <mingo@...>, Steven Rostedt <rostedt@...>, john cooper <john.cooper@...>
Date: Wednesday, November 14, 2007 - 10:24 pm

Thomas Gleixner wrote:


I'm not actively working on it but AFAIK I may have been
the last one to touch it when I did the mips version back
at Timesys.  Although I was able to get a functional port
of the work there were gremlins I never had sufficient
time to address.  That is a relatively minor issue.

The more daunting problem stems from limitations in the MIPS
ABI which makes the latency trace support problematic.
Rather than rehash the issue:

     http://lists.linuxcoding.com/kernel/2005-q4/msg10163.html

Until we have a usable instrumentation solution in place,
characterization, debug, and support of PREEMPT_RT for MIPS
is going to be a challenge.

-john

-- 
john.cooper@third-harmonic.com
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Messages in current thread:
Re: rt-preempt: problem compiling rt-preempt 2.6.23.1-rt11 o..., john cooper, (Wed Nov 14, 10:24 pm)
MIPS RT debug support, Tim Bird, (Thu Nov 15, 7:31 pm)
Re: MIPS RT debug support, Steven Rostedt, (Thu Nov 15, 9:00 pm)
Re: MIPS RT debug support, john cooper, (Thu Nov 15, 9:55 pm)
Re: MIPS RT debug support, Steven Rostedt, (Thu Nov 15, 10:25 pm)
Re: MIPS RT debug support, john cooper, (Fri Nov 16, 7:56 am)