linux-kernel - [PATCH v2 2/3] Revert "locking/local_lock: Make the empty local_lock

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Date:   Mon, 28 Mar 2022 16:58:09 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     torvalds@...ux-foundation.org
Cc:     akpm@...ux-foundation.org, bigeasy@...utronix.de,
        boqun.feng@...il.com, bp@...en8.de, linux-kernel@...r.kernel.org,
        longman@...hat.com, mingo@...nel.org, peterz@...radead.org,
        tglx@...utronix.de, will@...nel.org,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>
Subject: [PATCH v2 2/3] Revert "locking/local_lock: Make the empty local_lock_*() function a macro."

With volatile removed from arch_raw_cpu_ptr() the compiler no longer
creates the per-CPU reference. The usage of the macro can be reverted
now.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 include/linux/local_lock_internal.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/local_lock_internal.h b/include/linux/local_lock_internal.h
index 6d635e8306d64..975e33b793a77 100644
--- a/include/linux/local_lock_internal.h
+++ b/include/linux/local_lock_internal.h
@@ -44,9 +44,9 @@ static inline void local_lock_debug_init(local_lock_t *l)
 }
 #else /* CONFIG_DEBUG_LOCK_ALLOC */
 # define LOCAL_LOCK_DEBUG_INIT(lockname)
-# define local_lock_acquire(__ll)  do { typecheck(local_lock_t *, __ll); } while (0)
-# define local_lock_release(__ll)  do { typecheck(local_lock_t *, __ll); } while (0)
-# define local_lock_debug_init(__ll)  do { typecheck(local_lock_t *, __ll); } while (0)
+static inline void local_lock_acquire(local_lock_t *l) { }
+static inline void local_lock_release(local_lock_t *l) { }
+static inline void local_lock_debug_init(local_lock_t *l) { }
 #endif /* !CONFIG_DEBUG_LOCK_ALLOC */
 
 #define INIT_LOCAL_LOCK(lockname)	{ LOCAL_LOCK_DEBUG_INIT(lockname) }
-- 
2.35.1