[deliverable/lttng-modules.git] / wrapper / perf.h

#ifndef _LTTNG_WRAPPER_PERF_H
#define _LTTNG_WRAPPER_PERF_H

/*
 * wrapper/perf.h
 *
 * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; only
 * version 2.1 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

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

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
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);
}
#else /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
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)
{
	pid_t pid;

	if (!task)
		pid = -1;
	else
		pid = task->pid;

	return perf_event_create_kernel_counter(attr, cpu, pid, callback);
}

#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */

#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36))
#define local64_read(l)		atomic64_read(l)
#endif

#endif /* defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,99)) */

#endif /* _LTTNG_WRAPPER_PERF_H */
Commit	Line	Data
a90917c3 MD	1	#ifndef _LTTNG_WRAPPER_PERF_H
a90917c3 MD	2	#define _LTTNG_WRAPPER_PERF_H
90f5546c MD	3
90f5546c MD	4	/*
886d51a3	5	* wrapper/perf.h
90f5546c	6	*
886d51a3 MD	7	* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	9	* This library is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU Lesser General Public
	11	* License as published by the Free Software Foundation; only
	12	* version 2.1 of the License.
	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public
	20	* License along with this library; if not, write to the Free Software
	21	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
90f5546c MD	22	*/
	23
	24	#include <linux/perf_event.h>
	25
	26	#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,99))
	27	static inline struct perf_event *
	28	wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,
	29	int cpu,
	30	struct task_struct *task,
	31	perf_overflow_handler_t callback)
	32	{
	33	return perf_event_create_kernel_counter(attr, cpu, task, callback, NULL);
	34	}
3a523f5b MD	35	#else /* defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,99)) */
3a523f5b MD	36
745dd71e	37	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
90f5546c MD	38	static inline struct perf_event *
	39	wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,
	40	int cpu,
	41	struct task_struct *task,
	42	perf_overflow_handler_t callback)
	43	{
	44	return perf_event_create_kernel_counter(attr, cpu, task, callback);
	45	}
745dd71e	46	#else /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
3a523f5b MD	47	static inline struct perf_event *
	48	wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,
	49	int cpu,
	50	struct task_struct *task,
	51	perf_overflow_handler_t callback)
	52	{
	53	pid_t pid;
	54
	55	if (!task)
	56	pid = -1;
	57	else
	58	pid = task->pid;
	59
	60	return perf_event_create_kernel_counter(attr, cpu, pid, callback);
	61	}
	62
745dd71e AG	63	#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
	64
	65	#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36))
3a523f5b	66	#define local64_read(l) atomic64_read(l)
745dd71e	67	#endif
3a523f5b MD	68
3a523f5b MD	69	#endif /* defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,99)) */
90f5546c	70
a90917c3	71	#endif /* _LTTNG_WRAPPER_PERF_H */