From ef0da55a84a345f323ceddda3b6c78b25de90435 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 5 Sep 2016 18:25:47 +0100 Subject: jump_labels: Allow array initialisers The static key API is currently designed around single variable definitions. There are cases where an array of static keys is desirable, so extend the API to allow this rather than using the internal static key implementation directly. Cc: Jason Baron Cc: Jonathan Corbet Acked-by: Peter Zijlstra (Intel) Suggested-by: Dave P Martin Signed-off-by: Catalin Marinas Signed-off-by: Will Deacon --- Documentation/static-keys.txt | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'Documentation/static-keys.txt') diff --git a/Documentation/static-keys.txt b/Documentation/static-keys.txt index 477927becacb..ea8d7b4e53f0 100644 --- a/Documentation/static-keys.txt +++ b/Documentation/static-keys.txt @@ -15,6 +15,8 @@ The updated API replacements are: DEFINE_STATIC_KEY_TRUE(key); DEFINE_STATIC_KEY_FALSE(key); +DEFINE_STATIC_KEY_ARRAY_TRUE(keys, count); +DEFINE_STATIC_KEY_ARRAY_FALSE(keys, count); static_branch_likely() static_branch_unlikely() @@ -140,6 +142,13 @@ static_branch_inc(), will change the branch back to true. Likewise, if the key is initialized false, a 'static_branch_inc()', will change the branch to true. And then a 'static_branch_dec()', will again make the branch false. +Where an array of keys is required, it can be defined as: + + DEFINE_STATIC_KEY_ARRAY_TRUE(keys, count); + +or: + + DEFINE_STATIC_KEY_ARRAY_FALSE(keys, count); 4) Architecture level code patching interface, 'jump labels' -- cgit v1.2.3