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    SubjectRe: [PATCH] cpumask 5/10 rewrite cpumask.h - single bitmap based implementation
    Andrew Morton <akpm@osdl.org> wrote:
    >
    > > +typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t;
    > >
    >
    > We avoided doing this because in some situations the compiler will not pass
    > such a cpumask_t in a register, ever. An efficiency problem on sparc64,
    > apparently.

    Although for some reason your patches shrink my sparc64 build from

    text data bss dec hex filename
    3508730 895000 302656 4706386 47d052 vmlinux
    to 3507586 895080 302656 4705322 47cc2a vmlinux

    so we can probably evade the wrath-of-davem.

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