I believe that no ifdefs are worth several bytes of code expansion...
Index: arch/i386/kernel/head.S
===================================================================
RCS file: /home/cvs/Repository/linux/arch/i386/kernel/head.S,v
retrieving revision 1.1.1.1
diff -u -u -r1.1.1.1 head.S
--- arch/i386/kernel/head.S 2000/09/04 16:54:43 1.1.1.1
+++ arch/i386/kernel/head.S 2001/02/13 13:44:48
@@ -169,9 +169,7 @@
rep
movsl
1:
-#ifdef CONFIG_SMP
checkCPUtype:
-#endif
movl $-1,X86_CPUID # -1 for no CPUID initially
@@ -244,9 +242,7 @@
orl $2,%eax # set MP
2: movl %eax,%cr0
call check_x87
-#ifdef CONFIG_SMP
incb ready
-#endif
lgdt gdt_descr
lidt idt_descr
ljmp $(__KERNEL_CS),$1f
@@ -278,9 +274,7 @@
jmp L6 # main should never return here, but
# just in case, we know what happens.
-#ifdef CONFIG_SMP
ready: .byte 0
-#endif
/*
* We depend on ET to be correct. This checks for 287/387.
-- I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/