From: Paul Turner <pjt@google.com>
Date: Thu, 16 Dec 2010 03:10:17 +0000 (-0800)
Subject: sched: Move periodic share updates to entity_tick()
X-Git-Tag: v2.6.38-rc1~489^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43365bd7ff37979d2afdccbe953299ed64a4649b;p=pandora-kernel.git

sched: Move periodic share updates to entity_tick()

Long running entities that do not block (dequeue) require periodic updates to
maintain accurate share values.  (Note: group entities with several threads are
quite likely to be non-blocking in many circumstances).

By virtue of being long-running however, we will see entity ticks (otherwise
the required update occurs in dequeue/put and we are done).  Thus we can move
the detection (and associated work) for these updates into the periodic path.

This restores the 'atomicity' of update_curr() with respect to accounting.

Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20101216031038.067028969@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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