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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>
This commit is contained in:
parent
d6d211db37
commit
f0ba3d05c9
1 changed files with 26 additions and 20 deletions
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@ -199,6 +199,26 @@ extern int check_wakeup_irqs(void);
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static inline int check_wakeup_irqs(void) { return 0; }
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static inline int check_wakeup_irqs(void) { return 0; }
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#endif
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#endif
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/**
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* struct irq_affinity_notify - context for notification of IRQ affinity changes
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* @irq: Interrupt to which notification applies
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* @kref: Reference count, for internal use
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* @work: Work item, for internal use
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* @notify: Function to be called on change. This will be
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* called in process context.
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* @release: Function to be called on release. This will be
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* called in process context. Once registered, the
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* structure must only be freed when this function is
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* called or later.
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*/
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struct irq_affinity_notify {
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unsigned int irq;
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struct kref kref;
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struct work_struct work;
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void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask);
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void (*release)(struct kref *ref);
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};
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#if defined(CONFIG_SMP)
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#if defined(CONFIG_SMP)
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extern cpumask_var_t irq_default_affinity;
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extern cpumask_var_t irq_default_affinity;
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@ -242,26 +262,6 @@ extern int irq_select_affinity(unsigned int irq);
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extern int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m);
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extern int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m);
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/**
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* struct irq_affinity_notify - context for notification of IRQ affinity changes
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* @irq: Interrupt to which notification applies
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* @kref: Reference count, for internal use
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* @work: Work item, for internal use
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* @notify: Function to be called on change. This will be
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* called in process context.
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* @release: Function to be called on release. This will be
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* called in process context. Once registered, the
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* structure must only be freed when this function is
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* called or later.
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*/
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struct irq_affinity_notify {
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unsigned int irq;
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struct kref kref;
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struct work_struct work;
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void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask);
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void (*release)(struct kref *ref);
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};
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extern int
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extern int
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irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify);
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irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify);
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@ -284,6 +284,12 @@ static inline int irq_set_affinity_hint(unsigned int irq,
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{
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{
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return -EINVAL;
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return -EINVAL;
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}
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}
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static inline int
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irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify)
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{
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return 0;
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}
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#endif /* CONFIG_SMP */
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#endif /* CONFIG_SMP */
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/*
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/*
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