diff options
| author | Eyal Perry <eyalpe@mellanox.com> | 2014-05-20 17:57:00 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-05-21 11:31:51 +0900 |
| commit | f0ba3d05c9c647ab42ed6a0dbdfdeae42bfbd6de (patch) | |
| tree | a4f21b235e5e1032230f2a640170cda56fec7afd /include/linux/interrupt.h | |
| parent | d6d211db37e75de2ddc3a4f979038c40df7cc79c (diff) | |
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 <eyalpe@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: Yevgeny Petrilin <yevgenyp@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/1400597820-30685-1-git-send-email-amirv@mellanox.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/interrupt.h')
| -rw-r--r-- | include/linux/interrupt.h | 46 |
1 files changed, 26 insertions, 20 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 97ac926c78a7..3f74c0593171 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 */ /* |