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    x86, bitops: select the generic bitmap search functions · 19870def
    Alexander van Heukelum 提交于
    Introduce GENERIC_FIND_FIRST_BIT and GENERIC_FIND_NEXT_BIT in
    lib/Kconfig, defaulting to off. An arch that wants to use the
    generic implementation now only has to use a select statement
    to include them.
    
    I added an always-y option (X86_CPU) to arch/x86/Kconfig.cpu
    and used that to select the generic search functions. This
    way ARCH=um SUBARCH=i386 automatically picks up the change
    too, and arch/um/Kconfig.i386 can therefore be simplified a
    bit. ARCH=um SUBARCH=x86_64 does things differently, but
    still compiles fine. It seems that a "def_bool y" always
    wins over a "def_bool n"?
    Signed-off-by: NAlexander van Heukelum <heukelum@fastmail.fm>
    Signed-off-by: NIngo Molnar <mingo@elte.hu>
    19870def
Kconfig 2.9 KB