handle.c (5234ffb9f74cfa8993d174782bc861dd9b7b5bfb) handle.c (7140ea1980f2fae9c7aaeac5f6b35317e1389ee6)
1/*
2 * linux/kernel/irq/handle.c
3 *
4 * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
5 * Copyright (C) 2005-2006, Thomas Gleixner, Russell King
6 *
7 * This file contains the core interrupt handling code.
8 *

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105 *
106 * So either the thread waits for us to clear IRQS_INPROGRESS
107 * or we are waiting in the flow handler for desc->lock to be
108 * released before we reach this point. The thread also checks
109 * IRQTF_RUNTHREAD under desc->lock. If set it leaves
110 * threads_oneshot untouched and runs the thread another time.
111 */
112 desc->threads_oneshot |= action->thread_mask;
1/*
2 * linux/kernel/irq/handle.c
3 *
4 * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
5 * Copyright (C) 2005-2006, Thomas Gleixner, Russell King
6 *
7 * This file contains the core interrupt handling code.
8 *

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105 *
106 * So either the thread waits for us to clear IRQS_INPROGRESS
107 * or we are waiting in the flow handler for desc->lock to be
108 * released before we reach this point. The thread also checks
109 * IRQTF_RUNTHREAD under desc->lock. If set it leaves
110 * threads_oneshot untouched and runs the thread another time.
111 */
112 desc->threads_oneshot |= action->thread_mask;
113
114 /*
115 * We increment the threads_active counter in case we wake up
116 * the irq thread. The irq thread decrements the counter when
117 * it returns from the handler or in the exit path and wakes
118 * up waiters which are stuck in synchronize_irq() when the
119 * active count becomes zero. synchronize_irq() is serialized
120 * against this code (hard irq handler) via IRQS_INPROGRESS
121 * like the finalize_oneshot() code. See comment above.
122 */
123 atomic_inc(&desc->threads_active);
124
113 wake_up_process(action->thread);
114}
115
116irqreturn_t
117handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
118{
119 irqreturn_t retval = IRQ_NONE;
120 unsigned int random = 0, irq = desc->irq_data.irq;

--- 61 unchanged lines hidden --- 		125 wake_up_process(action->thread);
126}
127
128irqreturn_t
129handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
130{
131 irqreturn_t retval = IRQ_NONE;
132 unsigned int random = 0, irq = desc->irq_data.irq;

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