1 files changed, 107 insertions, 0 deletions
diff --git a/include/linux/local_lock.h b/include/linux/local_lock.h
new file mode 100644
index 000000000000..b0e6ab329b00
--- /dev/null
+++ b/include/linux/local_lock.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_LOCAL_LOCK_H
+#define _LINUX_LOCAL_LOCK_H
+
+#include <linux/local_lock_internal.h>
+
+/**
+ * local_lock_init - Runtime initialize a lock instance
+ * @lock:	The lock variable
+ */
+#define local_lock_init(lock)		__local_lock_init(lock)
+
+/**
+ * local_lock - Acquire a per CPU local lock
+ * @lock:	The lock variable
+ */
+#define local_lock(lock)		__local_lock(this_cpu_ptr(lock))
+
+/**
+ * local_lock_irq - Acquire a per CPU local lock and disable interrupts
+ * @lock:	The lock variable
+ */
+#define local_lock_irq(lock)		__local_lock_irq(this_cpu_ptr(lock))
+
+/**
+ * local_lock_irqsave - Acquire a per CPU local lock, save and disable
+ *			 interrupts
+ * @lock:	The lock variable
+ * @flags:	Storage for interrupt flags
+ */
+#define local_lock_irqsave(lock, flags)				\
+	__local_lock_irqsave(this_cpu_ptr(lock), flags)
+
+/**
+ * local_unlock - Release a per CPU local lock
+ * @lock:	The lock variable
+ */
+#define local_unlock(lock)		__local_unlock(this_cpu_ptr(lock))
+
+/**
+ * local_unlock_irq - Release a per CPU local lock and enable interrupts
+ * @lock:	The lock variable
+ */
+#define local_unlock_irq(lock)		__local_unlock_irq(this_cpu_ptr(lock))
+
+/**
+ * local_unlock_irqrestore - Release a per CPU local lock and restore
+ *			      interrupt flags
+ * @lock:	The lock variable
+ * @flags:      Interrupt flags to restore
+ */
+#define local_unlock_irqrestore(lock, flags)			\
+	__local_unlock_irqrestore(this_cpu_ptr(lock), flags)
+
+/**
+ * local_trylock_init - Runtime initialize a lock instance
+ * @lock:	The lock variable
+ */
+#define local_trylock_init(lock)	__local_trylock_init(lock)
+
+/**
+ * local_trylock - Try to acquire a per CPU local lock
+ * @lock:	The lock variable
+ *
+ * The function can be used in any context such as NMI or HARDIRQ. Due to
+ * locking constrains it will _always_ fail to acquire the lock in NMI or
+ * HARDIRQ context on PREEMPT_RT.
+ */
+#define local_trylock(lock)		__local_trylock(this_cpu_ptr(lock))
+
+#define local_lock_is_locked(lock)	__local_lock_is_locked(lock)
+
+/**
+ * local_trylock_irqsave - Try to acquire a per CPU local lock, save and disable
+ *			   interrupts if acquired
+ * @lock:	The lock variable
+ * @flags:	Storage for interrupt flags
+ *
+ * The function can be used in any context such as NMI or HARDIRQ. Due to
+ * locking constrains it will _always_ fail to acquire the lock in NMI or
+ * HARDIRQ context on PREEMPT_RT.
+ */
+#define local_trylock_irqsave(lock, flags)			\
+	__local_trylock_irqsave(this_cpu_ptr(lock), flags)
+
+DEFINE_GUARD(local_lock, local_lock_t __percpu*,
+	     local_lock(_T),
+	     local_unlock(_T))
+DEFINE_GUARD(local_lock_irq, local_lock_t __percpu*,
+	     local_lock_irq(_T),
+	     local_unlock_irq(_T))
+DEFINE_LOCK_GUARD_1(local_lock_irqsave, local_lock_t __percpu,
+		    local_lock_irqsave(_T->lock, _T->flags),
+		    local_unlock_irqrestore(_T->lock, _T->flags),
+		    unsigned long flags)
+
+#define local_lock_nested_bh(_lock)				\
+	__local_lock_nested_bh(this_cpu_ptr(_lock))
+
+#define local_unlock_nested_bh(_lock)				\
+	__local_unlock_nested_bh(this_cpu_ptr(_lock))
+
+DEFINE_GUARD(local_lock_nested_bh, local_lock_t __percpu*,
+	     local_lock_nested_bh(_T),
+	     local_unlock_nested_bh(_T))
+
+#endif