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x86: only compile setup_percpu.o on SMP

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Impact: Minor build optimization

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Brian Gerst 2009-01-27 12:56:47 +09:00 committed by Tejun Heo
parent ec70de8b04
commit 996db817e3
2 changed files with 2 additions and 7 deletions
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3
arch/x86/kernel/Makefile
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@ -28,7 +28,7 @@ CFLAGS_paravirt.o := $(nostackp)
obj-y := process_$(BITS).o signal.o entry_$(BITS).o
obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
obj-y += time_$(BITS).o ioport.o ldt.o dumpstack.o
obj-y += setup.o i8259.o irqinit_$(BITS).o setup_percpu.o
obj-y += setup.o i8259.o irqinit_$(BITS).o
obj-$(CONFIG_X86_VISWS) += visws_quirks.o
obj-$(CONFIG_X86_32) += probe_roms_32.o
obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
@ -59,6 +59,7 @@ apm-y := apm_32.o
obj-$(CONFIG_APM) += apm.o
obj-$(CONFIG_X86_SMP) += smp.o
obj-$(CONFIG_X86_SMP) += smpboot.o tsc_sync.o ipi.o
obj-$(CONFIG_SMP) += setup_percpu.o
obj-$(CONFIG_X86_32_SMP) += smpcommon.o
obj-$(CONFIG_X86_64_SMP) += tsc_sync.o smpcommon.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline_$(BITS).o

6
arch/x86/kernel/setup_percpu.c
View File

@ -22,14 +22,8 @@
# define DBG(x...)
#endif
/*
* Could be inside CONFIG_HAVE_SETUP_PER_CPU_AREA with other stuff but
* voyager wants cpu_number too.
*/
#ifdef CONFIG_SMP
DEFINE_PER_CPU(int, cpu_number);
EXPORT_PER_CPU_SYMBOL(cpu_number);
#endif
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA