[PATCH 0/2] [GIT PULL] sched: fixes for rt-migration-test failures

From: Steven Rostedt
Date: Wed Jul 29 2009 - 00:25:46 EST



Ingo,

We've been experiencing rt-migration-test failures

http://rostedt.homelinux.com/code/rt-migrate-test.c

Gregory Haskins and myself have been debugging this for several days.
We found three bugs so far in the code that causes the failure
of this test. The failure is that an RT task may not migrate
properly and may wait behind a lower RT prio task for the migration.

These two patches solve two of the bugs. There's also a bug that
is triggered with RT_GROUP scheduling that we will look at later.

The test can still fail after a long time running and we are still
looking into other issues. But for now this solves two of those
issues.

Please pull the latest update tree, which can be found at:

git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
update


Steven Rostedt (2):
sched: check for pushing rt tasks after all scheduling
sched: add new prio to cpupri before removing old prio

----
kernel/sched.c | 38 +++++++++++++++++++++++++++-----------
kernel/sched_cpupri.c | 30 ++++++++++++++++--------------
2 files changed, 43 insertions(+), 25 deletions(-)
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