From: Kevin Hao <haokexin@gmail.com>
Date: Sat, 23 Jul 2016 09:12:37 +0000 (+0530)
Subject: jump_label: Make it possible for arches to invoke jump_label_init() earlier
X-Git-Tag: v4.14-rc1~2706^2~35
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e3f91083facb792dc8d8fd0a59639e4d6e7c0c8f;p=platform%2Fkernel%2Flinux-rpi.git

jump_label: Make it possible for arches to invoke jump_label_init() earlier

Some arches (powerpc at least) would like to invoke jump_label_init()
much earlier in boot. So check static_key_initialized in order to make
sure this function runs only once.

LGTM-by: Ingo (http://marc.info/?l=linux-kernel&m=144049104329961&w=2)
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 0dbea88..2d693be 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -235,6 +235,9 @@ void __init jump_label_init(void)
 	struct static_key *key = NULL;
 	struct jump_entry *iter;
 
+	if (static_key_initialized)
+		return;
+
 	jump_label_lock();
 	jump_label_sort_entries(iter_start, iter_stop);