[src/riastradh-drm2]: src/sys/external/bsd/drm2/include/linux Implement atomi...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7d3bc7b650b0
branches:  riastradh-drm2
changeset: 787995:7d3bc7b650b0
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Jul 24 00:48:34 2013 +0000

description:
Implement atomic_t and atomic_read in drm2's <linux/atomic.h> shim.

diffstat:

 sys/external/bsd/drm2/include/linux/atomic.h |  12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)

diffs (24 lines):

diff -r 2feda408db65 -r 7d3bc7b650b0 sys/external/bsd/drm2/include/linux/atomic.h
--- a/sys/external/bsd/drm2/include/linux/atomic.h      Wed Jul 24 00:48:20 2013 +0000
+++ b/sys/external/bsd/drm2/include/linux/atomic.h      Wed Jul 24 00:48:34 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: atomic.h,v 1.1.2.1 2013/07/24 00:33:12 riastradh Exp $ */
+/*     $NetBSD: atomic.h,v 1.1.2.2 2013/07/24 00:48:34 riastradh Exp $ */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -32,4 +32,14 @@
 #ifndef _LINUX_ATOMIC_H_
 #define _LINUX_ATOMIC_H_
 
+typedef struct {
+       int atomic_value;
+} atomic_t;
+
+static inline int
+atomic_read(atomic_t *atomic)
+{
+       return *(volatile int *)&atomic->atomic_value;
+}
+
 #endif  /* _LINUX_ATOMIC_H_ */