+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
- *
- * wrapper/irqdesc.c
- *
- * wrapper around irq_to_desc. Using KALLSYMS to get its address when
- * available, else we need to have a kernel that exports this function to GPL
- * modules. This export was added to the 3.4 kernels.
- *
- * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#include <lttng-kernel-version.h>
-
-#if (defined(CONFIG_KALLSYMS) \
- && (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)))
-
-#include <linux/kallsyms.h>
-#include <linux/interrupt.h>
-#include <linux/irqnr.h>
-#include <wrapper/kallsyms.h>
-#include <wrapper/irqdesc.h>
-
-static
-struct irq_desc *(*irq_to_desc_sym)(unsigned int irq);
-
-struct irq_desc *wrapper_irq_to_desc(unsigned int irq)
-{
- if (!irq_to_desc_sym)
- irq_to_desc_sym = (void *) kallsyms_lookup_funcptr("irq_to_desc");
- if (irq_to_desc_sym) {
- return irq_to_desc_sym(irq);
- } else {
- printk_once(KERN_WARNING "LTTng: irq_to_desc symbol lookup failed.\n");
- return NULL;
- }
-}
-
-#else
-
-#include <linux/interrupt.h>
-#include <linux/irqnr.h>
-
-struct irq_desc *wrapper_irq_to_desc(unsigned int irq)
-{
- return irq_to_desc(irq);
-}
-
-#endif