X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=wrapper%2Firqdesc.c;h=018065640e22410e9390d53c46d19e51afaa6755;hb=0bbde2720b0d4af2a3d2596956262431df2a1e79;hp=a71981e74a4fdd74c4dc61b35d6563309df96eba;hpb=c337ddc219f608d4d35f461bdc9d2246324d6708;p=lttng-modules.git

diff --git a/wrapper/irqdesc.c b/wrapper/irqdesc.c
index a71981e7..01806564 100644
--- a/wrapper/irqdesc.c
+++ b/wrapper/irqdesc.c
@@ -1,20 +1,24 @@
-/*
- * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
+/* 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.
+ * modules. This export was added to the 3.4 kernels.
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
-#ifdef CONFIG_KALLSYMS
+#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 "kallsyms.h"
-#include "irqdesc.h"
+#include <wrapper/kallsyms.h>
+#include <wrapper/irqdesc.h>
 
 static
 struct irq_desc *(*irq_to_desc_sym)(unsigned int irq);
@@ -22,11 +26,11 @@ 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"); 
+		irq_to_desc_sym = (void *) kallsyms_lookup_funcptr("irq_to_desc");
 	if (irq_to_desc_sym) {
 		return irq_to_desc_sym(irq);
 	} else {
-		printk(KERN_WARNING "LTTng: irq_to_desc symbol lookup failed.\n");
+		printk_once(KERN_WARNING "LTTng: irq_to_desc symbol lookup failed.\n");
 		return NULL;
 	}
 }