From: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Date: Tue, 7 Feb 2017 19:54:14 +0000 (+0530)
Subject: kprobes: Introduce weak variant of kprobe_exceptions_notify()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=fc62d0207ae0ebc9d19df68394c0dc925b4a92d1;p=openwrt%2Fstaging%2Fblogic.git

kprobes: Introduce weak variant of kprobe_exceptions_notify()

kprobe_exceptions_notify() is not used on some of the architectures such
as arm[64] and powerpc anymore. Introduce a weak variant for such
architectures.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 43460104f119..60a702a05684 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1705,6 +1705,12 @@ void unregister_kprobes(struct kprobe **kps, int num)
 }
 EXPORT_SYMBOL_GPL(unregister_kprobes);
 
+int __weak __kprobes kprobe_exceptions_notify(struct notifier_block *self,
+					      unsigned long val, void *data)
+{
+	return NOTIFY_DONE;
+}
+
 static struct notifier_block kprobe_exceptions_nb = {
 	.notifier_call = kprobe_exceptions_notify,
 	.priority = 0x7fffffff /* we need to be notified first */