wrapper/irqdesc.h

   1 /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
   2  *
   3  * wrapper/irqdesc.h
   4  *
   5  * wrapper around irq_to_desc. Using KALLSYMS to get its address when
   6  * available, else we need to have a kernel that exports this function to GPL
   7  * modules.
   8  *
   9  * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  10  */
  11
  12 #ifndef _LTTNG_WRAPPER_IRQDESC_H
  13 #define _LTTNG_WRAPPER_IRQDESC_H
  14
  15 #include <linux/interrupt.h>
  16 #include <linux/irqnr.h>
  17
  18 struct irq_desc *wrapper_irq_to_desc(unsigned int irq);
  19
  20 /*
  21  * Canary function to check for 'irq_to_desc()' at compile time.
  22  *
  23  * From 'include/linux/irqnr.h':
  24  *
  25  *   extern struct irq_desc *irq_to_desc(unsigned int irq);
  26  */
  27 static inline
  28 struct irq_desc *__canary__irq_to_desc(unsigned int irq)
  29 {
  30         return irq_to_desc(irq);
  31 }
  32
  33 #endif /* _LTTNG_WRAPPER_IRQDESC_H */