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| author |   Andi Kleen <ak@linux.intel.com> | 2019-03-29 17:47:38 -0700 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2019-04-19 17:49:47 +0200 |
| commit | 81423c37415fe45057d64196ae0ce8e17a9c7148 (patch) | |
| tree | 2116ac1b83b7cc904a294bfa1ae9cb4c6287e51f | |
| parent | x86/tsc: Add option to disable tsc clocksource watchdog (diff) | |
| download | linux-dev-81423c37415fe45057d64196ae0ce8e17a9c7148.tar.xz linux-dev-81423c37415fe45057d64196ae0ce8e17a9c7148.zip | |
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
| -rw-r--r-- | arch/x86/lib/delay.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/lib/delay.c b/arch/x86/lib/delay.c index f5b7f1b3b6d7..b7375dc6898f 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); -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; int d0; |