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    SubjectRe: [PATCH][2.6] Allow x86_64 to reenable interrupts on contention
    Zwane Mwaikambo <zwane@linuxpower.ca> wrote:
    >
    > On Tue, 27 Jul 2004, Andi Kleen wrote:
    >
    > > On Tue, 27 Jul 2004 05:29:10 -0400 (EDT)
    > > Zwane Mwaikambo <zwane@linuxpower.ca> wrote:
    > >
    > > > This is a follow up to the previous patches for ia64 and i386, it will
    > > > allow x86_64 to reenable interrupts during contested locks depending on
    > > > previous interrupt enable status. It has been runtime and compile tested
    > > > on UP and 2x SMP Linux-tiny/x86_64.
    > >
    > > This will likely increase code size. Do you have numbers by how much? And is it
    > > really worth it?
    >
    > Yes there is a growth;
    >
    > text data bss dec hex filename
    > 3655358 1340511 486128 5481997 53a60d vmlinux-after
    > 3648445 1340511 486128 5475084 538b0c vmlinux-before

    The growth is all in the out-of-line section, so there should be no
    significant additional icache pressure.

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