Hi!
> +/**
> + * register_poweroff_handler_simple - Register function to be called to
> power off
> + * the system
> + * @handler: Function to be called to power off the system
> + * @priority: Handler priority. For priority guidelines see
> + * register_poweroff_handler.
> + *
> + * This is a simplified version of register_poweroff_handler. It does not
> + * take a notifier as argument, but a function pointer. The function
> + * registers a poweroff handler with specified priority. Poweroff
> + * handlers registered with this function can not be unregistered,
> + * and only a single poweroff handler can be installed using it.
> + *
> + * This function must not be called from modules and is therefore
> + * not exported.
> + *
> + * Returns -EBUSY if a poweroff handler has already been registered
> + * using register_poweroff_handler_simple. Otherwise returns zero,
> + * since atomic_notifier_chain_register() currently always returns zero.
> + */
> +int register_poweroff_handler_simple(void (*handler)(void), int priority)
> +{
> + char symname[KSYM_NAME_LEN];
> +
> + if (poweroff_handler_data.handler) {
> + lookup_symbol_name((unsigned long)poweroff_handler_data.handler,
> + symname);
> + pr_warn("Poweroff function already registered (%s)", symname);
> + lookup_symbol_name((unsigned long)handler, symname);
> + pr_cont(", cannot register %s\n", symname);
> + return -EBUSY;
> + }
Dunno, are you maybe overdoing the debugging infrastructure a bit?
This is not going to happen in production, and if it does happen,
developer can look the symbol name himself.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
------------------------------------------------------------------------------
Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer
Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports
Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper
Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer
http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk
_______________________________________________
User-mode-linux-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
