While this macro is defined in terms of "is_power_of_2" and is therefore functionally equivalent, the visual semantics are sometimes more appropriate for what is actually being tested.
Signed-off-by: Robert P. J. Day <[EMAIL PROTECTED]> --- diff --git a/include/linux/log2.h b/include/linux/log2.h index c8cf5e8..d0d324e 100644 --- a/include/linux/log2.h +++ b/include/linux/log2.h @@ -55,6 +55,12 @@ bool is_power_of_2(unsigned long n) } /* + * And for folks who want slightly different semantics ... + */ + +#define exactly_one_bit_set is_power_of_2 + +/* * round up to nearest power of two */ static inline __attribute__((const)) -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry Waterloo, Ontario, CANADA http://crashcourse.ca ======================================================================== - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
