X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=wrapper%2Fsplice.c;h=7160ea1aa009c148836ce636a27a79c356b3273f;hb=b78104db53f97c10add30016e365855a26f6e01e;hp=2ecc98f38bf706eea4ef476fc99c7b4ae85ae85e;hpb=d1871f9e416d700fa268af9f799a6da75dd937da;p=lttng-modules.git

diff --git a/wrapper/splice.c b/wrapper/splice.c
index 2ecc98f3..7160ea1a 100644
--- a/wrapper/splice.c
+++ b/wrapper/splice.c
@@ -12,7 +12,7 @@
 #include <lttng-kernel-version.h>
 
 #if (defined(CONFIG_KALLSYMS) \
-	&& (LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0)))
+	&& (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,2,0)))
 
 #include <linux/kallsyms.h>
 #include <linux/fs.h>
@@ -36,6 +36,21 @@ ssize_t wrapper_splice_to_pipe(struct pipe_inode_info *pipe,
 	}
 }
 
+/*
+ * Canary function to check for 'splice_to_pipe()' at compile time.
+ *
+ * From 'include/linux/splice.h':
+ *
+ *   extern ssize_t splice_to_pipe(struct pipe_inode_info *,
+ *                                 struct splice_pipe_desc *spd);
+ */
+__attribute__((unused)) static
+ssize_t __canary__splice_to_pipe(struct pipe_inode_info *pipe,
+				struct splice_pipe_desc *spd)
+{
+	return splice_to_pipe(pipe, spd);
+}
+
 #else
 
 #include <linux/fs.h>