#define _LTTNG_WRAPPER_PERF_H
/*
- * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
+ * wrapper/perf.h
*
- * Dual LGPL v2.1/GPL v2 license.
+ * 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))
+#ifdef CONFIG_PERF_EVENTS
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0))
static inline struct perf_event *
wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,
int cpu,
{
return perf_event_create_kernel_counter(attr, cpu, task, callback, NULL);
}
-#else
+#else /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)) */
+
+#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,
{
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 /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)) */
+
+#endif /* CONFIG_PERF_EVENTS */
+
#endif /* _LTTNG_WRAPPER_PERF_H */