Quoting Stelian Pop <[EMAIL PROTECTED]>:
On Wed, Aug 31, 2005 at 07:37:33PM +0200, Philippe Gerum wrote:
>However, I had to modify the ADEOS_PREEMPT_RT definition to:
>+config ADEOS_PREEMPT_RT
>+ def_bool PREEMPT_VOLUNTARY || PREEMPT_DESKTOP || PREEMPT_RT
>+
>(removed the PREEMPT_NONE from the def_bool definition) in order to make
>it build on a regular, non PREEMPT_RT kernel (or else the compilation
>would fail on a raw_spinlock_t undefined error). I think this problem
>exists in the 2.6.12 patch as well.
>
Ok. Looks like time has come to upgrade the combined Adeos/PREEMPT_RT patch
to
-rt1 in order to fix the issues brought since 0.7.44, I guess.
How does this relate to the above ? I worked on the _plain_ adeos
patch, not the combo rt one. That being said, the plain adeos patch
does contain some PREEMPT_RT bits - and those are the ones causing the
problems.
This is exactely how this relates to the above: The PREEMPT_RT-aware bits are
out of date.
>The ppc patch was a bit more tricky, but I think I got all of it right.
>It works ok most of the time (RTAI fusion testsuite passes for example -
>on a G4 Powerbook), but it hangs the machine hard sometimes. I am not
>sure if the problem is due to the port or if it is present in the 2.6.10
>version as well.
>
I had a report about issues involving insufficiently protected
get_mmu_context/destroy_context calls on the RTAI mailing list with
2.6.10-r8c1; I'm currently checking the proposed fix that has been sent to
me
on a mpc8541. If this works, then maybe this would solve the issue you
mention
too; hopefully.
I suppose you're talking about:
https://mail.rtai.org/pipermail/rtai/2005-August/012841.html
Yes; Looking at the code a bit more, I think the issue was more
generally lying
in the unprotected use of activate_mm(), as called from the fs/exec stuff.
I'll try that patch too tomorrow and will let you know if it does
fix my hangs.
>The two patches are at:
> http://www.popies.net/tmp/adeos-linux-2.6.13-i386-r13c1.patch
> http://www.popies.net/tmp/adeos-linux-2.6.13-ppc-r8c2.patch
>
I've picked them; they likely won't reach the CVS or the DL area until
next week
since I'm temporarily behind some paranoid firewall though.
np.
Thanks.
Stelian.
--
Stelian Pop <[EMAIL PROTECTED]>
Alcove - http://www.alcove.com
