From: Dhaval Giani <dhaval@linux.vnet.ibm.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Balbir Singh <balbir@in.ibm.com>,
Bharata B Rao <bharata@linux.vnet.ibm.com>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"Serge E. Hallyn" <serue@us.ibm.com>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: sched: Add USER_SCHED to feature removal list
Date: Wed, 4 Nov 2009 03:15:44 +0530 [thread overview]
Message-ID: <20091103214544.GI5495@linux.vnet.ibm.com> (raw)
sched: Add USER_SCHED to feature removal list
Peter Zijlstra suggested that we remove USER_SCHED at
http://lkml.org/lkml/2009/3/21/67 . Removing USER_SCHED removes a
lot of code from the scheduler and simplifies the code.
We already have the ability to do user based classification which
is tightened using PAM in userspace.
Schedule USER_SCHED for removal in 2.6.34
Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
---
Documentation/feature-removal-schedule.txt | 15 +++++++++++++++
1 file changed, 15 insertions(+)
Index: linux-2.6/Documentation/feature-removal-schedule.txt
===================================================================
--- linux-2.6.orig/Documentation/feature-removal-schedule.txt
+++ linux-2.6/Documentation/feature-removal-schedule.txt
@@ -6,6 +6,21 @@ be removed from this file.
---------------------------
+What: USER_SCHED
+When: 2.6.34
+
+Why: USER_SCHED was implemented as a proof of concept for group scheduling.
+ The effect of USER_SCHED can already be achieved from userspace with
+ the help of libcgroup. The removal of USER_SCHED will also simplify
+ the scheduler code with the removal of one major ifdef. There are also
+ issues USER_SCHED has with USER_NS. A decision was taken not to fix
+ those and instead remove USER_SCHED. Also new group scheduling
+ features will not be implemented for USER_SCHED.
+
+Who: Dhaval Giani <dhaval@linux.vnet.ibm.com>
+
+---------------------------
+
What: PRISM54
When: 2.6.34
--
regards,
Dhaval
next reply other threads:[~2009-11-03 21:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-03 21:45 Dhaval Giani [this message]
2009-11-04 15:24 ` [tip:sched/core] " tip-bot for Dhaval Giani
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