From: Peter Zijlstra <pet...@infradead.org>
commit cb538267ea1e9e025ec692577c9ae75797261889 upstream.
Weirdly we seem to have forgotten this...
Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Ingo Molnar <mi...@kernel.org>
Signed-off-by: Will McVicker <willmcvic...@google.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
kernel/jump_label.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -83,6 +83,7 @@ void static_key_slow_inc_cpuslocked(stru
int v, v1;
STATIC_KEY_CHECK_USE(key);
+ lockdep_assert_cpus_held();
/*
* Careful if we get concurrent static_key_slow_inc() calls;
@@ -128,6 +129,7 @@ EXPORT_SYMBOL_GPL(static_key_slow_inc);
void static_key_enable_cpuslocked(struct static_key *key)
{
STATIC_KEY_CHECK_USE(key);
+ lockdep_assert_cpus_held();
if (atomic_read(&key->enabled) > 0) {
WARN_ON_ONCE(atomic_read(&key->enabled) != 1);
@@ -158,6 +160,7 @@ EXPORT_SYMBOL_GPL(static_key_enable);
void static_key_disable_cpuslocked(struct static_key *key)
{
STATIC_KEY_CHECK_USE(key);
+ lockdep_assert_cpus_held();
if (atomic_read(&key->enabled) != 1) {
WARN_ON_ONCE(atomic_read(&key->enabled) != 0);
@@ -183,6 +186,8 @@ static void __static_key_slow_dec_cpuslo
unsigned long rate_limit,
struct delayed_work *work)
{
+ lockdep_assert_cpus_held();
+
/*
* The negative count check is valid even when a negative
* key->enabled is in use by static_key_slow_inc(); a
