[git pull] RT scheduler updates for tip

From: Gregory Haskins
Date: Fri Dec 05 2008 - 09:21:37 EST

Hi Ingo,
FWIW, I have placed all my latest upstream-able scheduler patches into
a branch in my git tree (against tip/master).


Gregory Haskins (11):
sched: cleanup inc/dec_rt_tasks
sched: track the next-highest priority on each runqueue
sched: use highest_prio.curr for pull threshold
sched: use highest_prio.next to optimize pull operations
sched: only try to push a task on wakeup if it is migratable
sched: pull only one task during NEWIDLE balancing to limit
critical section
sched: make double-lock-balance fair
sched: add sched_class->needs_post_schedule() member
plist: fix PLIST_NODE_INIT to work with debug enabled
sched: create "pushable_tasks" list to limit pushing to one attempt
RT: fix push_rt_task() to handle dequeue_pushable properly

include/linux/init_task.h | 1 +
include/linux/plist.h | 9 +-
include/linux/sched.h | 2 +
kernel/sched.c | 89 +++++++++++--
kernel/sched_rt.c | 324
5 files changed, 312 insertions(+), 113 deletions(-)

These are built/booted on my quad-core/x86_64 and look good to me.

1) the first four are the "next-highest" v3 patches that I submitted
2) the last seven are patches that Steven has carried in 26-rt that have
not yet been pulled in to tip

I assume there is an implicit ACK from Steven on (2) since he pulled
them into -rt. We still await comment from Peter re: (1).


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