Author: lstewart
Date: Tue Jul 13 06:49:34 2010
New Revision: 209978
URL: http://svn.freebsd.org/changeset/base/209978
Log:
- Rename DPCPU_SUM to DPCPU_VARSUM to better reflect the fact it operates on
member variables of a DPCPU struct.
- Add DPCPU_SUM which sums a DPCPU variable.
Sponsored by: FreeBSD Foundation
MFC after: 3 days
Modified:
head/sys/sys/pcpu.h
Modified: head/sys/sys/pcpu.h
==============================================================================
--- head/sys/sys/pcpu.h Tue Jul 13 06:42:47 2010 (r209977)
+++ head/sys/sys/pcpu.h Tue Jul 13 06:49:34 2010 (r209978)
@@ -109,7 +109,19 @@ extern uintptr_t dpcpu_off[];
/*
* Utility macros.
*/
-#define DPCPU_SUM(n, var) __extension__
\
+#define DPCPU_SUM(n) __extension__
\
+({ \
+ u_int _i; \
+ __typeof(DPCPU_PTR(n)) sum; \
+ \
+ sum = 0; \
+ CPU_FOREACH(_i) { \
+ sum += DPCPU_ID_PTR(_i, n); \
+ } \
+ sum; \
+})
+
+#define DPCPU_VARSUM(n, var) __extension__
\
({ \
u_int _i; \
__typeof((DPCPU_PTR(n))->var) sum; \
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