-#ifndef _LTT_WRAPPER_FTRACE_H
-#define _LTT_WRAPPER_FTRACE_H
-
-/*
- * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
+ * wrapper/ftrace.h
*
* wrapper around vmalloc_sync_all. Using KALLSYMS to get its address when
* available, else we need to have a kernel that exports this function to GPL
* modules.
*
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
+#ifndef _LTTNG_WRAPPER_FTRACE_H
+#define _LTTNG_WRAPPER_FTRACE_H
+
#include <linux/ftrace.h>
+#include <linux/version.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0))
+#include <../kernel/trace/trace.h>
+#endif
#ifdef CONFIG_KALLSYMS
#include <linux/kallsyms.h>
+#include <wrapper/kallsyms.h>
static inline
int wrapper_register_ftrace_function_probe(char *glob,
int (*register_ftrace_function_probe_sym)(char *glob,
struct ftrace_probe_ops *ops, void *data);
- register_ftrace_function_probe_sym = (void *) kallsyms_lookup_name("register_ftrace_function_probe");
+ register_ftrace_function_probe_sym = (void *) kallsyms_lookup_funcptr("register_ftrace_function_probe");
if (register_ftrace_function_probe_sym) {
return register_ftrace_function_probe_sym(glob, ops, data);
} else {
- printk(KERN_WARNING "LTTng: register_ftrace_function_probe symbol lookup failed.\n");
+ printk_once(KERN_WARNING "LTTng: register_ftrace_function_probe symbol lookup failed.\n");
return -EINVAL;
}
}
void (*unregister_ftrace_function_probe_sym)(char *glob,
struct ftrace_probe_ops *ops, void *data);
- unregister_ftrace_function_probe_sym = (void *) kallsyms_lookup_name("unregister_ftrace_function_probe");
+ unregister_ftrace_function_probe_sym = (void *) kallsyms_lookup_funcptr("unregister_ftrace_function_probe");
if (unregister_ftrace_function_probe_sym) {
unregister_ftrace_function_probe_sym(glob, ops, data);
} else {
- printk(KERN_WARNING "LTTng: unregister_ftrace_function_probe symbol lookup failed.\n");
+ printk_once(KERN_WARNING "LTTng: unregister_ftrace_function_probe symbol lookup failed.\n");
WARN_ON(1);
}
}
static inline
int wrapper_register_ftrace_function_probe(char *glob,
- struct ftrace_probe_ops *ops, void *data);
-
+ struct ftrace_probe_ops *ops, void *data)
{
- return unregister_ftrace_function_probe();
+ return register_ftrace_function_probe(glob, ops, data);
}
static inline
void wrapper_unregister_ftrace_function_probe(char *glob,
- struct ftrace_probe_ops *ops, void *data);
+ struct ftrace_probe_ops *ops, void *data)
{
- return unregister_ftrace_function_probe();
+ return unregister_ftrace_function_probe(glob, ops, data);
}
#endif
-#endif /* _LTT_WRAPPER_FTRACE_H */
+#endif /* _LTTNG_WRAPPER_FTRACE_H */