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authorTodd Poynor <toddpoynor@google.com>2011-06-15 17:21:57 -0700
committerDan Willemsen <dwillemsen@nvidia.com>2011-11-30 21:38:50 -0800
commitf65de758b3d84a085bfe3fc769c4650bcf62ffa4 (patch)
treea62fef65227cbd27e1332e300996ec6ede51d726 /kernel
parent761f7c709ed7c3afad269613e06df03d023d8d1c (diff)
Move x86_64 idle notifiers to generic
Move the x86_64 idle notifiers originally by Andi Kleen and Venkatesh Pallipadi to generic. Change-Id: Idf29cda15be151f494ff245933c12462643388d5 Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Todd Poynor <toddpoynor@google.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cpu.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 12b7458f23b1..404770761a4e 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -594,3 +594,23 @@ void init_cpu_online(const struct cpumask *src)
{
cpumask_copy(to_cpumask(cpu_online_bits), src);
}
+
+static ATOMIC_NOTIFIER_HEAD(idle_notifier);
+
+void idle_notifier_register(struct notifier_block *n)
+{
+ atomic_notifier_chain_register(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_register);
+
+void idle_notifier_unregister(struct notifier_block *n)
+{
+ atomic_notifier_chain_unregister(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_unregister);
+
+void idle_notifier_call_chain(unsigned long val)
+{
+ atomic_notifier_call_chain(&idle_notifier, val, NULL);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_call_chain);