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Linux ip-172-31-46-210 5.15.0-1033-aws #37~20.04.1-Ubuntu SMP Fri Mar 17 11:39:30 UTC 2023 x86_64
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irq_work.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_IRQ_WORK_H #define _LINUX_IRQ_WORK_H #include <linux/smp_types.h> /* * An entry can be in one of four states: * * free NULL, 0 -> {claimed} : free to be used * claimed NULL, 3 -> {pending} : claimed to be enqueued * pending next, 3 -> {busy} : queued, pending callback * busy NULL, 2 -> {free, claimed} : callback in progress, can be claimed */ struct irq_work { struct __call_single_node node; void (*func)(struct irq_work *); }; #define __IRQ_WORK_INIT(_func, _flags) (struct irq_work){ \ .node = { .u_flags = (_flags), }, \ .func = (_func), \ } #define IRQ_WORK_INIT(_func) __IRQ_WORK_INIT(_func, 0) #define IRQ_WORK_INIT_LAZY(_func) __IRQ_WORK_INIT(_func, IRQ_WORK_LAZY) #define IRQ_WORK_INIT_HARD(_func) __IRQ_WORK_INIT(_func, IRQ_WORK_HARD_IRQ) #define DEFINE_IRQ_WORK(name, _f) \ struct irq_work name = IRQ_WORK_INIT(_f) static inline void init_irq_work(struct irq_work *work, void (*func)(struct irq_work *)) { *work = IRQ_WORK_INIT(func); } static inline bool irq_work_is_pending(struct irq_work *work) { return atomic_read(&work->node.a_flags) & IRQ_WORK_PENDING; } static inline bool irq_work_is_busy(struct irq_work *work) { return atomic_read(&work->node.a_flags) & IRQ_WORK_BUSY; } bool irq_work_queue(struct irq_work *work); bool irq_work_queue_on(struct irq_work *work, int cpu); void irq_work_tick(void); void irq_work_sync(struct irq_work *work); #ifdef CONFIG_IRQ_WORK #include <asm/irq_work.h> void irq_work_run(void); bool irq_work_needs_cpu(void); void irq_work_single(void *arg); #else static inline bool irq_work_needs_cpu(void) { return false; } static inline void irq_work_run(void) { } static inline void irq_work_single(void *arg) { } #endif #endif /* _LINUX_IRQ_WORK_H */