Author: kib
Date: Fri Aug 30 07:43:34 2013
New Revision: 255059
URL: http://svnweb.freebsd.org/changeset/base/255059
Log:
Add BIT_AND_ATOMIC() and CPU_AND_ATOMIC().
Sponsored by: The FreeBSD Foundation
Reviewed by: alc
Tested by: pho, bf
Modified:
head/sys/sys/bitset.h
head/sys/sys/cpuset.h
Modified: head/sys/sys/bitset.h
==============================================================================
--- head/sys/sys/bitset.h Fri Aug 30 07:42:38 2013 (r255058)
+++ head/sys/sys/bitset.h Fri Aug 30 07:43:34 2013 (r255059)
@@ -135,7 +135,14 @@
atomic_set_long(&(p)->__bits[__bitset_word(_s, n)], \
__bitset_mask((_s), n))
-/* Convenience functions catering special cases. */
+/* Convenience functions catering special cases. */
+#define BIT_AND_ATOMIC(_s, d, s) do {
\
+ __size_t __i; \
+ for (__i = 0; __i < __bitset_words((_s)); __i++) \
+ atomic_clear_long(&(d)->__bits[__i], \
+ ~(s)->__bits[__i]); \
+} while (0)
+
#define BIT_OR_ATOMIC(_s, d, s) do {
\
__size_t __i; \
for (__i = 0; __i < __bitset_words((_s)); __i++) \
Modified: head/sys/sys/cpuset.h
==============================================================================
--- head/sys/sys/cpuset.h Fri Aug 30 07:42:38 2013 (r255058)
+++ head/sys/sys/cpuset.h Fri Aug 30 07:43:34 2013 (r255059)
@@ -55,6 +55,7 @@
#define CPU_NAND(d, s) BIT_NAND(CPU_SETSIZE, d, s)
#define CPU_CLR_ATOMIC(n, p) BIT_CLR_ATOMIC(CPU_SETSIZE, n,
p)
#define CPU_SET_ATOMIC(n, p) BIT_SET_ATOMIC(CPU_SETSIZE, n,
p)
+#define CPU_AND_ATOMIC(n, p) BIT_AND_ATOMIC(CPU_SETSIZE, n,
p)
#define CPU_OR_ATOMIC(d, s) BIT_OR_ATOMIC(CPU_SETSIZE, d, s)
#define CPU_COPY_STORE_REL(f, t) BIT_COPY_STORE_REL(CPU_SETSIZE,
f, t)
#define CPU_FFS(p) BIT_FFS(CPU_SETSIZE, p)
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