From: Thomas Gleixner Date: Tue, 21 Jul 2009 22:34:14 +0200 Subject: rt: local_irq_* variants depending on RT/!RT Add local_irq_*_(no)rt variant which are mainly used to break interrupt disabled sections on PREEMPT_RT or to explicitely disable interrupts on PREEMPT_RT. Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 2 +- include/linux/irqflags.h | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+), 1 deletion(-) --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -207,7 +207,7 @@ extern void devm_free_irq(struct device #ifdef CONFIG_LOCKDEP # define local_irq_enable_in_hardirq() do { } while (0) #else -# define local_irq_enable_in_hardirq() local_irq_enable() +# define local_irq_enable_in_hardirq() local_irq_enable_nort() #endif extern void disable_irq_nosync(unsigned int irq); --- a/include/linux/irqflags.h +++ b/include/linux/irqflags.h @@ -165,4 +165,23 @@ do { \ #define irqs_disabled_flags(flags) raw_irqs_disabled_flags(flags) +/* + * local_irq* variants depending on RT/!RT + */ +#ifdef CONFIG_PREEMPT_RT_FULL +# define local_irq_disable_nort() do { } while (0) +# define local_irq_enable_nort() do { } while (0) +# define local_irq_save_nort(flags) local_save_flags(flags) +# define local_irq_restore_nort(flags) (void)(flags) +# define local_irq_disable_rt() local_irq_disable() +# define local_irq_enable_rt() local_irq_enable() +#else +# define local_irq_disable_nort() local_irq_disable() +# define local_irq_enable_nort() local_irq_enable() +# define local_irq_save_nort(flags) local_irq_save(flags) +# define local_irq_restore_nort(flags) local_irq_restore(flags) +# define local_irq_disable_rt() do { } while (0) +# define local_irq_enable_rt() do { } while (0) +#endif + #endif