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Commit a6967caf authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq: Remove desc->status when GENERIC_HARDIRQS_NO_COMPAT=y 



If everything uses the right accessors, then enabling
GENERIC_HARDIRQS_NO_COMPAT should just work. If not it will tell you.

Don't be lazy and use the trick which I use in the core code!

git grep status_use_accessors

will unearth it in a split second. Offenders are tracked down and not
slapped with stinking trouts. This time we use frozen shark for a
better educational value.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent e1ef8241

include/linux/irqdesc.h

+6 −0
Original line number Diff line number Diff line
@@ -64,7 +64,11 @@ struct irq_desc { 
	unsigned int __percpu	*kstat_irqs;

	irq_flow_handler_t	handle_irq;

	struct irqaction	*action;	/* IRQ action list */

#ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT

	unsigned int		status_use_accessors;

#else

	unsigned int		status;		/* IRQ status */

#endif

	unsigned int		core_internal_state__do_not_mess_with_it;

	unsigned int		depth;		/* nested irq disables */

	unsigned int		wake_depth;	/* nested wake enables */
@@ -164,6 +168,7 @@ static inline int irq_has_action(unsigned int irq) 
	return desc->action != NULL;

}



#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT

static inline int irq_balancing_disabled(unsigned int irq)

{

	struct irq_desc *desc;
@@ -171,6 +176,7 @@ static inline int irq_balancing_disabled(unsigned int irq) 
	desc = irq_to_desc(irq);

	return desc->status & IRQ_NO_BALANCING_MASK;

}

#endif



/* caller has locked the irq_desc and both params are valid */

static inline void __set_irq_handler_unlocked(int irq,

kernel/irq/internals.h

+4 −0
Original line number Diff line number Diff line
@@ -15,6 +15,10 @@ 


#define istate core_internal_state__do_not_mess_with_it



#ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT

# define status status_use_accessors

#endif



extern int noirqdebug;



/*

kernel/irq/settings.h

+1 −0
Original line number Diff line number Diff line
@@ -134,4 +134,5 @@ static inline bool irq_settings_is_nested_thread(struct irq_desc *desc) 
}



/* Nothing should touch desc->status from now on */

#undef status

#define status		USE_THE_PROPER_WRAPPERS_YOU_MORON