What is the recommended way to access the Linux command line from a kernel module? I need to pass some info from the bootloader to my module. I see that /proc/cmdline (proc_misc.c) includes and accesses "saved_command_line" directly but when I try the same I get

Unknown symbol saved_command_line

That makes sense since I don't see that symbol exported for my architecture but I don't see how /proc/cmdline is able to see it.


linux$ grep -r 'EXPORT_SYMBOL(saved_command_line)' *
arch/sparc/kernel/sparc_ksyms.c:EXPORT_SYMBOL(saved_command_line);
arch/sparc64/kernel/sparc64_ksyms.c:EXPORT_SYMBOL(saved_command_line);