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[PATCH 00/23] RT balance v7

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From: Gregory Haskins <ghaskins@...>
To: <mingo@...>
Cc: <rostedt@...>, <ghaskins@...>, <linux-rt-users@...>, <linux-kernel@...>
Subject: [PATCH 00/23] RT balance v7
Date: Tuesday, December 4, 2007 - 4:44 pm

Ingo,

This series applies on GIT commit 2254c2e0184c603f92fc9b81016ff4bb53da622d
(2.6.24-rc4 (ish) git HEAD)

These patches replace v6 + v6b announced here:

http://lkml.org/lkml/2007/11/20/613

 and

http://lkml.org/lkml/2007/11/21/226

The series is a collaborative effort between myself and Steven Rostedt.

Changes since v6:

*) cleaned up patch headers
*) fixed some checkpatch errors
*) incorporated v6<x> add-ons to one unified series

Synopsis:
---------------------

Most people don't care about RT tasks, but some of us do, and this series
helps us fix a problem with the current design.  We designed carefully to have
negligible impact on non RT code paths, and we believe we have achieved this
goal.

These tests against a 64-way SMP architecture show that the series doesn't
hurt those that don't care about RT tasks, but it helps out those that do.

http://people.redhat.com/srostedt/rt-benchmarks/

you can find a tarball of the entire series for your convenience here:

ftp://ftp.novell.com/dev/ghaskins/rt-balance-v7.tar.bz2

also, most of these patches have been incorporated into the later versions of
-rt which you can find in patch form here:

http://www.kernel.org/pub/linux/kernel/projects/rt/

or in prebuilt form here from opensuse-factory:

http://download.opensuse.org/distribution/SL-OSS-factory/inst-source/suse/x86_64/kerne...

Please consider for inclusion in the next convenient merge window.

Regards,
-Steven Rostedt, and Gregory Haskins
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Messages in current thread:
[PATCH 00/23] RT balance v7, Gregory Haskins, (Tue Dec 4, 4:44 pm)
Re: [PATCH 00/23] RT balance v7, Ingo Molnar, (Tue Dec 4, 5:27 pm)
[PATCH 0/3] RT balance v7a, Gregory Haskins, (Tue Dec 4, 10:55 pm)
[PATCH 3/3] Subject: SCHED - Use a 2-d bitmap for searching ..., Gregory Haskins, (Tue Dec 4, 10:55 pm)
Re: [PATCH 3/3] Subject: SCHED - Use a 2-d bitmap for search..., Ingo Molnar, (Wed Dec 5, 5:34 am)
Re: [PATCH 3/3] Subject: SCHED - Use a 2-d bitmap for search..., Gregory Haskins, (Wed Dec 5, 6:19 am)
Re: [PATCH 3/3] Subject: SCHED - Use a 2-d bitmap for search..., Ingo Molnar, (Wed Dec 5, 7:44 am)
Re: [PATCH 3/3] Subject: SCHED - Use a 2-d bitmap for search..., Gregory Haskins, (Wed Dec 5, 9:41 am)
[PATCH 2/3] Subject: SCHED - Only balance our RT tasks withi..., Gregory Haskins, (Tue Dec 4, 10:55 pm)
[PATCH 1/3] Subject: SCHED - Add sched-domain roots, Gregory Haskins, (Tue Dec 4, 10:55 pm)
Re: [PATCH 00/23] RT balance v7, Gregory Haskins, (Tue Dec 4, 5:35 pm)
[PATCH 23/23] Subject: SCHED - Use a 2-d bitmap for searchin..., Gregory Haskins, (Tue Dec 4, 4:46 pm)
[PATCH 22/23] Subject: SCHED - Only balance our RT tasks wit..., Gregory Haskins, (Tue Dec 4, 4:46 pm)
[PATCH 21/23] Subject: SCHED - Add sched-domain roots, Gregory Haskins, (Tue Dec 4, 4:46 pm)
[PATCH 20/23] Subject: SCHED - balance RT tasks no new wake up, Gregory Haskins, (Tue Dec 4, 4:46 pm)
[PATCH 16/23] Subject: SCHED - Avoid overload, Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 14/23] Subject: SCHED - Optimize our cpu selection ba..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 19/23] Subject: SCHED - Optimize out cpu_clears, Gregory Haskins, (Tue Dec 4, 4:46 pm)
[PATCH 18/23] Subject: SCHED - Optimize cpu search with hamm..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 15/23] Subject: SCHED - Optimize rebalancing, Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 17/23] Subject: SCHED - restore the migratable condit..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 13/23] Subject: SCHED - Pre-route RT tasks on wakeup, Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 10/23] Subject: SCHED - Remove some CFS specific code..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 12/23] Subject: SCHED - Allow current_cpu to be inclu..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 11/23] Subject: SCHED - Break out the search function, Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 09/23] Subject: SCHED - Consistency cleanup for this_..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 08/23] Subject: SCHED - Cache cpus_allowed weight for..., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 03/23] Subject: SCHED - push RT tasks, Gregory Haskins, (Tue Dec 4, 4:44 pm)
[PATCH 06/23] Subject: SCHED - wake up balance RT, Gregory Haskins, (Tue Dec 4, 4:44 pm)
[PATCH 07/23] Subject: SCHED - disable CFS RT load balancing., Gregory Haskins, (Tue Dec 4, 4:45 pm)
[PATCH 05/23] Subject: SCHED - pull RT tasks, Gregory Haskins, (Tue Dec 4, 4:44 pm)
[PATCH 04/23] Subject: SCHED - RT overloaded runqueues accou..., Gregory Haskins, (Tue Dec 4, 4:44 pm)
[PATCH 02/23] Subject: SCHED - track highest prio queued on ..., Gregory Haskins, (Tue Dec 4, 4:44 pm)
[PATCH 01/23] Subject: SCHED - Add rt_nr_running accounting, Gregory Haskins, (Tue Dec 4, 4:44 pm)