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x86/timer: Don't inline __const_udelay() 

LTO will happily inline __const_udelay() everywhere it is used.  Forcing it
noinline 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 this function should never be inlined.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190330004743.29541-4-andi@firstfloor.org
This commit is contained in:
Andi Kleen 2019-03-29 17:47:38 -07:00 committed by Thomas Gleixner
parent 0f0b7e1cc7
commit 81423c3741
1 changed files with 1 additions and 1 deletions
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2
arch/x86/lib/delay.c
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@ -162,7 +162,7 @@ void __delay(unsigned long loops)
} }
EXPORT_SYMBOL(__delay); EXPORT_SYMBOL(__delay);
void __const_udelay(unsigned long xloops) noinline void __const_udelay(unsigned long xloops)
{ {
unsigned long lpj = this_cpu_read(cpu_info.loops_per_jiffy) ? : loops_per_jiffy; unsigned long lpj = this_cpu_read(cpu_info.loops_per_jiffy) ? : loops_per_jiffy;
int d0; int d0;