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    SubjectRe: x86: A fast way to check capabilities of the current cpu
    On Wed, 15 Dec 2010 14:07:39 -0600 (CST)
    Christoph Lameter <cl@linux.com> wrote:

    > +#define cpu_has(c, bit) \
    > + (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \
    > test_cpu_cap(c, bit))
    >
    > +#define this_cpu_has(bit) \
    > + (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \
    > + this_cpu_test_bit(bit, (unsigned long *)&cpu_info.x86_capability))
    > +

    Isn't

    a ? 1 : b

    a complex way of writing

    a || b

    ?


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