From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Mon, 15 May 2006 16:43:58 +0000 (-0700)
Subject: [PATCH] RCU: introduce rcu_needs_cpu() interface
X-Git-Tag: v2.6.17-rc5~149
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=986733e01d258c26107f1da9d8d47c718349ad2f;p=pandora-kernel.git

[PATCH] RCU: introduce rcu_needs_cpu() interface

With "Paul E. McKenney" <paulmck@us.ibm.com>

Introduce rcu_needs_cpu() interface.  This can be used to tell if there
will be a new rcu batch on a cpu soon by looking at the curlist pointer.
This can be used to avoid to enter a tickless idle state where the cpu
would miss that a new batch is ready when rcu_start_batch would be called
on a different cpu.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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