From the coLinux Linux kernel patch:
diff -urN linux/arch/i386/kernel/entry.S linux/arch/i386/kernel/entry.S --- linux/arch/i386/kernel/entry.S 2004-02-02 22:53:38.000000000 +0200 +++ linux/arch/i386/kernel/entry.S 2003-12-17 19:07:36.000000000 +0200 @@ -207,6 +207,28 @@ jne tracesys cmpl $(NR_syscalls),%eax jae badsys +#ifdef CONFIG_COOPERATIVE +#if (0) + jmp printk_colxm_after +printk_colxm: + .asciz "syscall: %d\n" +printk_colxm_after: + /* mini-mini-mini version of syscalltrack, hey muli */ <---- + cmp $3, %eax + jbe after_print + cmp $240, %eax + jb print_it + jmp after_print