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[2/8] jump_label: make it possible for the archs to invoke jump_label_init() much earlier

Message ID 1440072876-8321-3-git-send-email-haokexin@gmail.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Kevin Hao Aug. 20, 2015, 12:14 p.m. UTC 
For some archs (such as powerpc) would want to invoke jump_label_init()
in a much earlier stage. So check static_key_initialized in order to
make sure this function run only once.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
---
 kernel/jump_label.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index df1a7fbe7cd5..fcae370f8794 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -205,6 +205,9 @@  void __init jump_label_init(void)
 	struct static_key *key = NULL;
 	struct jump_entry *iter;
 
+	if (static_key_initialized)
+		return;
+
 	jump_label_sort_entries(iter_start, iter_stop);
 
 	for (iter = iter_start; iter < iter_stop; iter++) {