X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=wrapper%2Fperf.h;h=48e256c86b49ffe3e3d4e3ca30a0ea93855f05c6;hb=9f36eaed6f91d5897924b551b44d1edd8cee00e2;hp=2caf308ab0abc6711070e0f796e337db1c607852;hpb=886d51a3d7ed5fa6b41d7f19b3e14ae6c535a44c;p=lttng-modules.git

diff --git a/wrapper/perf.h b/wrapper/perf.h
index 2caf308a..48e256c8 100644
--- a/wrapper/perf.h
+++ b/wrapper/perf.h
@@ -1,29 +1,18 @@
-#ifndef _LTTNG_WRAPPER_PERF_H
-#define _LTTNG_WRAPPER_PERF_H
-
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
  * 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
  */
 
+#ifndef _LTTNG_WRAPPER_PERF_H
+#define _LTTNG_WRAPPER_PERF_H
+
 #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,
@@ -32,7 +21,9 @@ wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,
 {
 	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,
@@ -41,6 +32,31 @@ wrapper_perf_event_create_kernel_counter(struct perf_event_attr *attr,
 {
 	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 */