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Bug#517449: linux-image-2.6.26-1-amd64: SCHED_IDLE issues (tasks blocked for more than 120 seconds)



Hai Zaar wrote:
On Wed, Jun 3, 2009 at 5:12 AM, Ben Hutchings<ben@decadent.org.uk> wrote:
You found some scheduling changes made post-2.6.28 which seemed to deal
with this bug.  However, that cannot be the full story because they are
modifying code which was added after 2.6.26.

The attached patch combines a bug fix made between 2.6.26 and .28 with
most of the changes you identified.  Based on my reading of commit
messages and discussion, I think this makes a coherent set of changes.
However there have been many other changes to the scheduler in this time
and I cannot say for sure whether any of those are also required as I do
not have any great knowledge of it.

Please try rebuilding the "lenny" kernel (linux-source-2.6.26) with this
patch applied and report whether it fixes the bug for you.
Thank you for response!
I've applied the patch to most recent lenny kernel and booted it. If
in two weeks the problem does not occur, I will assume that the bug is
gone (I will let you know).

Thanks again!

Is this for Dom0?

I have two systems suffering this pain...and the silence on the Debian kernel lists to my offers to help test the patch is deafening. ;-)

There are some patches mentioned here for 2.6.26 and also mention of 2.6.29.

I am sorry because I can not get Google to tell me how Debian Xen
kernels are patched and built :-(

How does one build something like
xen-linux-system-2.6.26-custom-xen-amd64 with those patches?

Also assuming the fixes are already included in 2.6.29....how should I
build a Debian xen-linux-system-2.6.29-custom-xen-amd64?

I am familiar with make-kpkg...

Berni



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