X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=wrapper%2Fsplice.c;h=b0f8738b03b3cf5c06dd918af49cada27e6919fb;hb=d072dbc6353855937ca51f2c3746ad25ad21d978;hp=44a4d6b87b2b8062b571ed6270b4556006e8572a;hpb=9f36eaed6f91d5897924b551b44d1edd8cee00e2;p=lttng-modules.git

diff --git a/wrapper/splice.c b/wrapper/splice.c
index 44a4d6b8..b0f8738b 100644
--- a/wrapper/splice.c
+++ b/wrapper/splice.c
@@ -4,12 +4,15 @@
  *
  * 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.
+ * modules. The export was introduced in kernel 4.2.
  *
  * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
-#ifdef CONFIG_KALLSYMS
+#include <lttng-kernel-version.h>
+
+#if (defined(CONFIG_KALLSYMS) \
+	&& (LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)))
 
 #include <linux/kallsyms.h>
 #include <linux/fs.h>
@@ -24,7 +27,7 @@ ssize_t wrapper_splice_to_pipe(struct pipe_inode_info *pipe,
 			       struct splice_pipe_desc *spd)
 {
 	if (!splice_to_pipe_sym)
-		splice_to_pipe_sym = (void *) kallsyms_lookup_funcptr("splice_to_pipe"); 
+		splice_to_pipe_sym = (void *) kallsyms_lookup_funcptr("splice_to_pipe");
 	if (splice_to_pipe_sym) {
 		return splice_to_pipe_sym(pipe, spd);
 	} else {