Changeset 4777e02 in mainline for kernel/generic/include/synch/spinlock.h

Timestamp:

2023-02-12T22:25:23Z (15 months ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c7326f21

Parents:

111b9b9

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-12 22:11:54)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-12 22:25:23)

Message:

Make spinlock functions inlineable in non-SMP case

By popular demand.

File:

• kernel/generic/include/synch/spinlock.h (modified) (2 diffs)

kernel/generic/include/synch/spinlock.h

@@ -117 +117 @@
         SPINLOCK_STATIC_INITIALIZE_NAME(lock_name, #lock_name)
 
+#ifdef CONFIG_SMP
+
 extern void spinlock_initialize(spinlock_t *, const char *);
 extern bool spinlock_trylock(spinlock_t *);
@@ -122 +124 @@
 extern void spinlock_unlock(spinlock_t *);
 extern bool spinlock_locked(spinlock_t *);
+
+#else
+
+#include <preemption.h>
+
+static inline void spinlock_initialize(spinlock_t *l, const char *name)
+{
+}
+
+static inline bool spinlock_trylock(spinlock_t *l)
+{
+        return true;
+}
+
+static inline void spinlock_lock(spinlock_t *l)
+{
+        preemption_disable();
+}
+
+static inline void spinlock_unlock(spinlock_t *l)
+{
+        preemption_enable();
+}
+
+static inline bool spinlock_locked(spinlock_t *l)
+{
+        return true;
+}
+
+#endif
 
 typedef struct {