Commit-ID: f0ba3d05c9c647ab42ed6a0dbdfdeae42bfbd6de Gitweb: http://git.kernel.org/tip/f0ba3d05c9c647ab42ed6a0dbdfdeae42bfbd6de Author: Eyal Perry <eya...@mellanox.com> AuthorDate: Tue, 20 May 2014 17:57:00 +0300 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Wed, 21 May 2014 11:31:51 +0900
genirq: Provide !SMP stub for irq_set_affinity_notifier() Instead of requiring each consumer of the IRQ affinity notifier to have themselves be explicitly dependent on CONFIG_SMP, make the definition of struct irq_affinity_notify to exist independently of that config option and introduce a stub for irq_set_affinity_notifier() under non SMP configuration. Fixes: 2eacc23 ("net/mlx4_core: Enforce irq affinity changes immediatly") Signed-off-by: Eyal Perry <eya...@mellanox.com> Signed-off-by: Amir Vadai <am...@mellanox.com> Cc: Ben Hutchings <bhutchi...@solarflare.com> Cc: Yevgeny Petrilin <yevge...@mellanox.com> Cc: Or Gerlitz <ogerl...@mellanox.com> Cc: David S. Miller <da...@davemloft.net> Link: http://lkml.kernel.org/r/1400597820-30685-1-git-send-email-am...@mellanox.com Signed-off-by: Thomas Gleixner <t...@linutronix.de> --- include/linux/interrupt.h | 46 ++++++++++++++++++++++++++-------------------- 1 file changed, 26 insertions(+), 20 deletions(-) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 97ac926..3f74c059 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -199,6 +199,26 @@ extern int check_wakeup_irqs(void); static inline int check_wakeup_irqs(void) { return 0; } #endif +/** + * struct irq_affinity_notify - context for notification of IRQ affinity changes + * @irq: Interrupt to which notification applies + * @kref: Reference count, for internal use + * @work: Work item, for internal use + * @notify: Function to be called on change. This will be + * called in process context. + * @release: Function to be called on release. This will be + * called in process context. Once registered, the + * structure must only be freed when this function is + * called or later. + */ +struct irq_affinity_notify { + unsigned int irq; + struct kref kref; + struct work_struct work; + void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask); + void (*release)(struct kref *ref); +}; + #if defined(CONFIG_SMP) extern cpumask_var_t irq_default_affinity; @@ -242,26 +262,6 @@ extern int irq_select_affinity(unsigned int irq); extern int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m); -/** - * struct irq_affinity_notify - context for notification of IRQ affinity changes - * @irq: Interrupt to which notification applies - * @kref: Reference count, for internal use - * @work: Work item, for internal use - * @notify: Function to be called on change. This will be - * called in process context. - * @release: Function to be called on release. This will be - * called in process context. Once registered, the - * structure must only be freed when this function is - * called or later. - */ -struct irq_affinity_notify { - unsigned int irq; - struct kref kref; - struct work_struct work; - void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask); - void (*release)(struct kref *ref); -}; - extern int irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify); @@ -284,6 +284,12 @@ static inline int irq_set_affinity_hint(unsigned int irq, { return -EINVAL; } + +static inline int +irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify) +{ + return 0; +} #endif /* CONFIG_SMP */ /* -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/