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    Subject[PATCH 03/21] x86/timer: Don't inline __const_udelay
    Date
    From: Andi Kleen <ak@linux.intel.com>

    __const_udelay is marked inline, and LTO will happily inline it everywhere
    Dropping the inline saves ~44k text in a LTO build.

    13999560 1740864 1499136 17239560 1070e08 vmlinux-with-udelay-inline
    13954764 1736768 1499136 17190668 1064f0c vmlinux-wo-udelay-inline

    Even without LTO I believe marking it noinline documents it correctly.

    Signed-off-by: Andi Kleen <ak@linux.intel.com>
    ---
    arch/x86/lib/delay.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c
    index 553f8fd23cc4..09c83b2f80d2 100644
    --- a/arch/x86/lib/delay.c
    +++ b/arch/x86/lib/delay.c
    @@ -162,7 +162,7 @@ void __delay(unsigned long loops)
    }
    EXPORT_SYMBOL(__delay);

    -inline void __const_udelay(unsigned long xloops)
    +void __const_udelay(unsigned long xloops)
    {
    unsigned long lpj = this_cpu_read(cpu_info.loops_per_jiffy) ? : loops_per_jiffy;
    int d0;
    --
    2.13.6
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