Cleanup: Move instrumentation/ headers to include/instrumentation/

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

diff --git a/wrapper/splice.h b/wrapper/splice.h
index 5f400747cb1bcb5c3c5070884a330b8de3a3fb3b..a42bd6fb821dcc36476f947aa2667a2e745672ec 100644 (file)
--- a/wrapper/splice.h
+++ b/wrapper/splice.h
@@ -1,46 +1,24 @@
-#ifndef _LTT_WRAPPER_SPLICE_H
-#define _LTT_WRAPPER_SPLICE_H
-
-/*
- * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
+ * wrapper/splice.h
  *
- * wrapper around vmalloc_sync_all. Using KALLSYMS to get its address when
+ * wrapper around splice_to_pipe. 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.
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
-#ifdef CONFIG_KALLSYMS
+#ifndef _LTTNG_WRAPPER_SPLICE_H
+#define _LTTNG_WRAPPER_SPLICE_H
 
-#include <linux/kallsyms.h>
 #include <linux/splice.h>
 
-static inline
 ssize_t wrapper_splice_to_pipe(struct pipe_inode_info *pipe,
-                              struct splice_pipe_desc *spd)
-{
-       ssize_t (*splice_to_pipe_sym)(struct pipe_inode_info *pipe,
-                                     struct splice_pipe_desc *spd);
-
-       splice_to_pipe_sym = (void *) kallsyms_lookup_name("splice_to_pipe");
-       if (splice_to_pipe_sym) {
-               return splice_to_pipe_sym(pipe, spd);
-       } else {
-               printk(KERN_WARNING "LTTng: splice_to_pipe symbol lookup failed.\n");
-               return -ENOSYS;
-       }
-}
-#else
+                              struct splice_pipe_desc *spd);
 
-#include <linux/splice.h>
-
-static inline
-ssize_t wrapper_splice_to_pipe(struct pipe_inode_info *pipe,
-                              struct splice_pipe_desc *spd)
-{
-       return splice_to_pipe(pipe, spd);
-}
+#ifndef PIPE_DEF_BUFFERS
+#define PIPE_DEF_BUFFERS 16
 #endif
 
-#endif /* _LTT_WRAPPER_SPLICE_H */
+#endif /* _LTTNG_WRAPPER_SPLICE_H */