Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH 1/6] x86/timer: Don't inline __const_udelay | Date | Thu, 21 Dec 2017 16:18:16 -0800 |
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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 4846eff7e4c8..f5b7f1b3b6d7 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; -- 2.15.0
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