PERFORCE change 43333 for review
Peter Wemm
peter at FreeBSD.org
Tue Dec 2 17:24:49 PST 2003
http://perforce.freebsd.org/chv.cgi?CH=43333
Change 43333 by peter at peter_overcee on 2003/12/02 17:23:51
add 64 bit versions of ffs()/fls() (ffsl,flsl). I want to use
this in the runq stuff.
Affected files ...
.. //depot/projects/hammer/sys/amd64/include/cpufunc.h#14 edit
Differences ...
==== //depot/projects/hammer/sys/amd64/include/cpufunc.h#14 (text+ko) ====
@@ -143,6 +143,14 @@
#endif
}
+#define HAVE_INLINE_FFSL
+
+static __inline int
+ffsl(long mask)
+{
+ return (mask == 0 ? mask : (int)bsfq((u_long)mask) + 1);
+}
+
#define HAVE_INLINE_FLS
static __inline int
@@ -151,6 +159,14 @@
return (mask == 0 ? mask : (int)bsrl((u_int)mask) + 1);
}
+#define HAVE_INLINE_FLSL
+
+static __inline int
+flsl(long mask)
+{
+ return (mask == 0 ? mask : (int)bsrq((u_long)mask) + 1);
+}
+
static __inline void
halt(void)
{
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