Module Name: src
Committed By: riastradh
Date: Sun Dec 19 11:16:00 UTC 2021
Modified Files:
src/sys/external/bsd/drm2/include/linux: atomic.h
Log Message:
drm/linux: atomic_fetch_add/inc
To generate a diff of this commit:
cvs rdiff -u -r1.36 -r1.37 src/sys/external/bsd/drm2/include/linux/atomic.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/include/linux/atomic.h
diff -u src/sys/external/bsd/drm2/include/linux/atomic.h:1.36 src/sys/external/bsd/drm2/include/linux/atomic.h:1.37
--- src/sys/external/bsd/drm2/include/linux/atomic.h:1.36 Sun Dec 19 11:14:56 2021
+++ src/sys/external/bsd/drm2/include/linux/atomic.h Sun Dec 19 11:16:00 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: atomic.h,v 1.36 2021/12/19 11:14:56 riastradh Exp $ */
+/* $NetBSD: atomic.h,v 1.37 2021/12/19 11:16:00 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -201,6 +201,27 @@ atomic_andnot(int value, atomic_t *atomi
}
static inline int
+atomic_fetch_add(int value, atomic_t *atomic)
+{
+ unsigned old, new;
+
+ smp_mb__before_atomic();
+ do {
+ old = atomic->a_u.au_uint;
+ new = old + value;
+ } while (atomic_cas_uint(&atomic->a_u.au_uint, old, new) != old);
+ smp_mb__after_atomic();
+
+ return old;
+}
+
+static inline int
+atomic_fetch_inc(atomic_t *atomic)
+{
+ return atomic_fetch_add(1, atomic);
+}
+
+static inline int
atomic_fetch_xor(int value, atomic_t *atomic)
{
unsigned old, new;
