diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 15:59:13 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 15:59:13 -0700 |
commit | d09cc3659db494aca4b3bb2393c533fb4946b794 (patch) | |
tree | 158d1dd5fa5fddf1c99da677a193b8561c11274d /include | |
parent | 82e627eb5e07d7993216c9e63fb5550cf6ed25d7 (diff) | |
parent | c0ffa793994a7a69c37a96dabf38323eae1dffa6 (diff) | |
download | op-kernel-dev-d09cc3659db494aca4b3bb2393c533fb4946b794.zip op-kernel-dev-d09cc3659db494aca4b3bb2393c533fb4946b794.tar.gz |
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull core irq updates from Thomas Gleixner:
"The irq department delivers:
- Another tree wide update to get rid of the horrible create_irq
interface along with its even more horrible variants. That also
gets rid of the last leftovers of the initial sparse irq hackery.
arch/driver specific changes have been either acked or ignored.
- A fix for the spurious interrupt detection logic with threaded
interrupts.
- A new ARM SoC interrupt controller
- The usual pile of fixes and improvements all over the place"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
Documentation: brcmstb-l2: Add Broadcom STB Level-2 interrupt controller binding
irqchip: brcmstb-l2: Add Broadcom Set Top Box Level-2 interrupt controller
genirq: Improve documentation to match current implementation
ARM: iop13xx: fix msi support with sparse IRQ
genirq: Provide !SMP stub for irq_set_affinity_notifier()
irqchip: armada-370-xp: Move the devicetree binding documentation
irqchip: gic: Use mask field in GICC_IAR
genirq: Remove dynamic_irq mess
ia64: Use irq_init_desc
genirq: Replace dynamic_irq_init/cleanup
genirq: Remove irq_reserve_irq[s]
genirq: Replace reserve_irqs in core code
s390: Avoid call to irq_reserve_irqs()
s390: Remove pointless arch_show_interrupts()
s390: pci: Check return value of alloc_irq_desc() proper
sh: intc: Remove pointless irq_reserve_irqs() invocation
x86, irq: Remove pointless irq_reserve_irqs() call
genirq: Make create/destroy_irq() ia64 private
tile: Use SPARSE_IRQ
tile: pci: Use irq_alloc/free_hwirq()
...
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/interrupt.h | 46 | ||||
-rw-r--r-- | include/linux/irq.h | 38 | ||||
-rw-r--r-- | include/linux/irqchip/arm-gic.h | 2 | ||||
-rw-r--r-- | include/linux/irqdesc.h | 4 |
4 files changed, 48 insertions, 42 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index cb19f09..698ad05 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); @@ -289,6 +289,12 @@ 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 */ /* diff --git a/include/linux/irq.h b/include/linux/irq.h index 5c57efb..0d998d8 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -525,24 +525,6 @@ static inline void irq_set_percpu_devid_flags(unsigned int irq) IRQ_NOPROBE | IRQ_PER_CPU_DEVID); } -/* Handle dynamic irq creation and destruction */ -extern unsigned int create_irq_nr(unsigned int irq_want, int node); -extern unsigned int __create_irqs(unsigned int from, unsigned int count, - int node); -extern int create_irq(void); -extern void destroy_irq(unsigned int irq); -extern void destroy_irqs(unsigned int irq, unsigned int count); - -/* - * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and - * irq_free_desc instead. - */ -extern void dynamic_irq_cleanup(unsigned int irq); -static inline void dynamic_irq_init(unsigned int irq) -{ - dynamic_irq_cleanup(irq); -} - /* Set/get chip/data for an IRQ: */ extern int irq_set_chip(unsigned int irq, struct irq_chip *chip); extern int irq_set_handler_data(unsigned int irq, void *data); @@ -625,17 +607,29 @@ int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, irq_alloc_descs(-1, from, cnt, node) void irq_free_descs(unsigned int irq, unsigned int cnt); -int irq_reserve_irqs(unsigned int from, unsigned int cnt); - static inline void irq_free_desc(unsigned int irq) { irq_free_descs(irq, 1); } -static inline int irq_reserve_irq(unsigned int irq) +#ifdef CONFIG_GENERIC_IRQ_LEGACY_ALLOC_HWIRQ +unsigned int irq_alloc_hwirqs(int cnt, int node); +static inline unsigned int irq_alloc_hwirq(int node) +{ + return irq_alloc_hwirqs(1, node); +} +void irq_free_hwirqs(unsigned int from, int cnt); +static inline void irq_free_hwirq(unsigned int irq) { - return irq_reserve_irqs(irq, 1); + return irq_free_hwirqs(irq, 1); } +int arch_setup_hwirq(unsigned int irq, int node); +void arch_teardown_hwirq(unsigned int irq); +#endif + +#ifdef CONFIG_GENERIC_IRQ_LEGACY +void irq_init_desc(unsigned int irq); +#endif #ifndef irq_reg_writel # define irq_reg_writel(val, addr) writel(val, addr) diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index 7ed92d0..45e2d8c 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -21,6 +21,8 @@ #define GIC_CPU_ACTIVEPRIO 0xd0 #define GIC_CPU_IDENT 0xfc +#define GICC_IAR_INT_ID_MASK 0x3ff + #define GIC_DIST_CTRL 0x000 #define GIC_DIST_CTR 0x004 #define GIC_DIST_IGROUP 0x080 diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 26e2661..472c021 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -27,6 +27,8 @@ struct irq_desc; * @irq_count: stats field to detect stalled irqs * @last_unhandled: aging timer for unhandled count * @irqs_unhandled: stats field for spurious unhandled interrupts + * @threads_handled: stats field for deferred spurious detection of threaded handlers + * @threads_handled_last: comparator field for deferred spurious detection of theraded handlers * @lock: locking for SMP * @affinity_hint: hint to user space for preferred irq affinity * @affinity_notify: context for notification of affinity changes @@ -52,6 +54,8 @@ struct irq_desc { unsigned int irq_count; /* For detecting broken IRQs */ unsigned long last_unhandled; /* Aging timer for unhandled count */ unsigned int irqs_unhandled; + atomic_t threads_handled; + int threads_handled_last; raw_spinlock_t lock; struct cpumask *percpu_enabled; #ifdef CONFIG_SMP |