[Suspend2][ 04/13] [Suspend2] Notify userspace of a new message.

[Nigel Cunningham <nigel@suspend2.net>]

Wake up a userspace process when we have a new netlink message for it to
process.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/netlink.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/kernel/power/netlink.c b/kernel/power/netlink.c
index 82a9f6d..c8c543a 100644
--- a/kernel/power/netlink.c
+++ b/kernel/power/netlink.c
@@ -65,3 +65,17 @@ static void put_skb(struct user_helper_d
 		kfree_skb(skb);
 }
 
+
+static void suspend_notify_userspace(void* data)
+{
+	struct task_struct *t;
+	struct user_helper_data *uhd = (struct user_helper_data *) data;
+
+	BUG_ON(!uhd);
+
+	read_lock(&tasklist_lock);
+	if ((t = find_task_by_pid(uhd->pid)))
+		wake_up_process(t);
+	read_unlock(&tasklist_lock);
+}
+

--
Nigel Cunningham		nigel at suspend2 dot net