Cleanup: Move instrumentation/ headers to include/instrumentation/

[lttng-modules.git] / wrapper / poll.h

diff --git a/wrapper/poll.h b/wrapper/poll.h
index ae524730cda3e184c34293e69d8bd7beec4fa5d3..a97bb6b81fa105d9d02fadcd7cea92976fc3c6e7 100644 (file)
--- a/wrapper/poll.h
+++ b/wrapper/poll.h
@@ -1,20 +1,20 @@
-#ifndef _LTTNG_WRAPPER_POLL_H
-#define _LTTNG_WRAPPER_POLL_H
-
-/*
- * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
  *
- * wrapper around poll __pollwait and poll_get_entry. Using KALLSYMS to get its
- * address when available, else we need to have a kernel that exports this
- * function to GPL modules.
+ * wrapper/poll.h
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
+#ifndef _LTTNG_WRAPPER_POLL_H
+#define _LTTNG_WRAPPER_POLL_H
+
 #include <linux/poll.h>
 
-void wrapper_pollwait_exclusive(struct file *filp,
-                        wait_queue_head_t *wait_address,
-                        poll_table *p);
+/*
+ * Note: poll_wait_set_exclusive() is defined as no-op. Thundering herd
+ * effect can be noticed with large number of consumer threads.
+ */
+
+#define poll_wait_set_exclusive(poll_table)
 
 #endif /* _LTTNG_WRAPPER_POLL_H */