lttng wrappers

#ifndef _LTT_WRAPPER_FTRACE_H

#define _LTT_WRAPPER_FTRACE_H

/*

 * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)

 *

 * 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.

 */

#include <linux/ftrace.h>

#ifdef CONFIG_KALLSYMS

#include <linux/kallsyms.h>

#include "kallsyms.h"

static inline

int wrapper_register_ftrace_function_probe(char *glob,

		struct ftrace_probe_ops *ops, void *data)

{

	int (*register_ftrace_function_probe_sym)(char *glob,

			struct ftrace_probe_ops *ops, void *data);

	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");

		return -EINVAL;

	}

}

static inline

void wrapper_unregister_ftrace_function_probe(char *glob,

		struct ftrace_probe_ops *ops, void *data)

{

	void (*unregister_ftrace_function_probe_sym)(char *glob,

			struct ftrace_probe_ops *ops, void *data);

	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");

		WARN_ON(1);

	}

}

#else

static inline

int wrapper_register_ftrace_function_probe(char *glob,

		struct ftrace_probe_ops *ops, void *data)

{

	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)

{

	return unregister_ftrace_function_probe(glob, ops, data);

}

#endif

#endif /* _LTT_WRAPPER_FTRACE_H */

/*

 * wrapper/inline_memcpy.h

 *

 * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

 *

 * Dual LGPL v2.1/GPL v2 license.

 */

#if !defined(__HAVE_ARCH_INLINE_MEMCPY) && !defined(inline_memcpy)

#define inline_memcpy memcpy

#endif

#ifndef _LTT_WRAPPER_KALLSYMS_H

#define _LTT_WRAPPER_KALLSYMS_H

/*

 * Copyright (C) 2011 Avik Sil (avik.sil@linaro.org)

 *

 * wrapper around kallsyms_lookup_name. Implements arch-dependent code for

 * arches where the address of the start of the function body is different

 * from the pointer which can be used to call the function, e.g. ARM THUMB2.

 *

 * Dual LGPL v2.1/GPL v2 license.

 */

static inline

unsigned long kallsyms_lookup_funcptr(const char *name)

{

	unsigned long addr;

	addr = kallsyms_lookup_name(name);

#ifdef CONFIG_ARM

#ifdef CONFIG_THUMB2_KERNEL

	if (addr)

		addr |= 1; /* set bit 0 in address for thumb mode */

#endif

#endif

	return addr;

}

#endif /* _LTT_WRAPPER_KALLSYMS_H */

#ifndef _LTT_WRAPPER_PERF_H

#define _LTT_WRAPPER_PERF_H

/*

 * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)

 *

 * Dual LGPL v2.1/GPL v2 license.

 */

#include <linux/perf_event.h>

#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,99))

static inline struct perf_event *

wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,

				int cpu,

				struct task_struct *task,

				perf_overflow_handler_t callback)

{

	return perf_event_create_kernel_counter(attr, cpu, task, callback, NULL);

}

#else

static inline struct perf_event *

wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,

				int cpu,

				struct task_struct *task,

				perf_overflow_handler_t callback)

{

	return perf_event_create_kernel_counter(attr, cpu, task, callback);

}

#endif

#endif /* _LTT_WRAPPER_PERF_H */

#ifndef _LTTNG_WRAPPER_POLL_H

#define _LTTNG_WRAPPER_POLL_H

/*

 * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)

 *

 * Dual LGPL v2.1/GPL v2 license.

 */

#include <linux/poll.h>

#define poll_wait_set_exclusive(poll_table)

#endif /* _LTTNG_WRAPPER_POLL_H */