[PATCH 1/8] jump_label: no need to acquire the jump_label_mutex in jump_lable_init()
From: Kevin Hao <hidden>
Date: 2015-08-20 12:14:58
Also in:
lkml
Subsystem:
static branch/call, the rest · Maintainers:
Peter Zijlstra, Josh Poimboeuf, Jason Baron, Alice Ryhl, Linus Torvalds
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 <redacted> --- 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