Cleanup: Move lib/ringbuffer/ headers to include/ringbuffer/

[lttng-modules.git] / lib / ringbuffer / vatomic.h

diff --git a/lib/ringbuffer/vatomic.h b/lib/ringbuffer/vatomic.h
deleted file mode 100644 (file)
index 6fdc4d1..0000000
--- a/lib/ringbuffer/vatomic.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/* SPDX-License-Identifier: (GPL-2.0-only OR LGPL-2.1-only)
- *
- * lib/ringbuffer/vatomic.h
- *
- * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#ifndef _LIB_RING_BUFFER_VATOMIC_H
-#define _LIB_RING_BUFFER_VATOMIC_H
-
-#include <asm/atomic.h>
-#include <asm/local.h>
-
-/*
- * Same data type (long) accessed differently depending on configuration.
- * v field is for non-atomic access (protected by mutual exclusion).
- * In the fast-path, the ring_buffer_config structure is constant, so the
- * compiler can statically select the appropriate branch.
- * local_t is used for per-cpu and per-thread buffers.
- * atomic_long_t is used for globally shared buffers.
- */
-union v_atomic {
-       local_t l;
-       atomic_long_t a;
-       long v;
-};
-
-static inline
-long v_read(const struct lib_ring_buffer_config *config, union v_atomic *v_a)
-{
-       if (config->sync == RING_BUFFER_SYNC_PER_CPU)
-               return local_read(&v_a->l);
-       else
-               return atomic_long_read(&v_a->a);
-}
-
-static inline
-void v_set(const struct lib_ring_buffer_config *config, union v_atomic *v_a,
-          long v)
-{
-       if (config->sync == RING_BUFFER_SYNC_PER_CPU)
-               local_set(&v_a->l, v);
-       else
-               atomic_long_set(&v_a->a, v);
-}
-
-static inline
-void v_add(const struct lib_ring_buffer_config *config, long v, union v_atomic *v_a)
-{
-       if (config->sync == RING_BUFFER_SYNC_PER_CPU)
-               local_add(v, &v_a->l);
-       else
-               atomic_long_add(v, &v_a->a);
-}
-
-static inline
-void v_inc(const struct lib_ring_buffer_config *config, union v_atomic *v_a)
-{
-       if (config->sync == RING_BUFFER_SYNC_PER_CPU)
-               local_inc(&v_a->l);
-       else
-               atomic_long_inc(&v_a->a);
-}
-
-/*
- * Non-atomic decrement. Only used by reader, apply to reader-owned subbuffer.
- */
-static inline
-void _v_dec(const struct lib_ring_buffer_config *config, union v_atomic *v_a)
-{
-       --v_a->v;
-}
-
-static inline
-long v_cmpxchg(const struct lib_ring_buffer_config *config, union v_atomic *v_a,
-              long old, long _new)
-{
-       if (config->sync == RING_BUFFER_SYNC_PER_CPU)
-               return local_cmpxchg(&v_a->l, old, _new);
-       else
-               return atomic_long_cmpxchg(&v_a->a, old, _new);
-}
-
-#endif /* _LIB_RING_BUFFER_VATOMIC_H */