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Groups > linux.kernel > #1210459

[PATCH 1/8] jump_label: no need to acquire the jump_label_mutex in jump_lable_init()

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The jump_label_init() run in a very early stage, even before the
sched_init(). So there is no chance for concurrent access of the
jump label table.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
---
 kernel/jump_label.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index f7dd15d537f9..df1a7fbe7cd5 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -205,7 +205,6 @@ void __init jump_label_init(void)
 	struct static_key *key = NULL;
 	struct jump_entry *iter;
 
-	jump_label_lock();
 	jump_label_sort_entries(iter_start, iter_stop);
 
 	for (iter = iter_start; iter < iter_stop; iter++) {
@@ -229,7 +228,6 @@ void __init jump_label_init(void)
 #endif
 	}
 	static_key_initialized = true;
-	jump_label_unlock();
 }
 
 #ifdef CONFIG_MODULES
-- 
2.1.0

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[PATCH 1/8] jump_label: no need to acquire the jump_label_mutex in jump_lable_init() Kevin Hao <haokexin@gmail.com> - 2015-08-20 14:20 +0200
  Re: [PATCH 1/8] jump_label: no need to acquire the jump_label_mutex  in jump_lable_init() Peter Zijlstra <peterz@infradead.org> - 2015-08-20 20:30 +0200
    Re: [PATCH 1/8] jump_label: no need to acquire the jump_label_mutex  in jump_lable_init() Kevin Hao <haokexin@gmail.com> - 2015-08-21 05:20 +0200

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