I just posted unifdef.c to comp.unix.programmer. It extracts #ifdef'ed
code. It's hardwired to "#ifdef CONFIG_SMP". It doesn't do #ifndef, and it
gets a bit over a meg of SMP out of 2.4, with suitable sh/grep wrapping.
It's 2 hours work, running entirely on bugs.
The end of the output I got with a bit of wrapping looked like this....
linux/arch/s390/kernel/time.c
#ifdef CONFIG_SMP
extern __u16 boot_cpu_addr;
#endif
#ifdef CONFIG_SMP
if(S390_lowcore.cpu_data.cpu_addr==boot_cpu_addr) {
write_lock(&xtime_lock);
last_timer_cc = S390_lowcore.jiffy_timer_cc;
}
#else
#ifdef CONFIG_SMP
/* when SMP, do smp_local_timer_interrupt for *all* CPUs,
but only do the rest for the boot CPU */
smp_local_timer_interrupt(regs);
#else
#ifdef CONFIG_SMP
if(S390_lowcore.cpu_data.cpu_addr==boot_cpu_addr)
#endif
#ifdef CONFIG_SMP
write_unlock(&xtime_lock);
#endif
linux/arch/s390/lib/delay.c
#ifdef CONFIG_SMP
#include <asm/smp.h>
#endif
linux/Documentation/Configure.help
linux/Documentation/smp.txt
linux/Documentation/kbuild/config-language.txt
linux/Documentation/DocBook/kernel-locking.tmpl
linux/Documentation/DocBook/kernel-locking.tmpl
*snip*
Apologies to l-k if recent cpp's have this.
Rick Hohensee
rick@clienux.com
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