X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Flib%2Fringbuffer%2Fring_buffer_splice.c;h=b6580fa6d42359158195a086c79e16490728849a;hb=5f4c791e2ad2c814101ccdb500e65543f2792c41;hp=6061cce1e380f2cf682e1a5656778b8d3e35a7d5;hpb=4352d50825272fb3c3a9d8fc54fe87a73121e1ec;p=lttng-modules.git

diff --git a/src/lib/ringbuffer/ring_buffer_splice.c b/src/lib/ringbuffer/ring_buffer_splice.c
index 6061cce1..b6580fa6 100644
--- a/src/lib/ringbuffer/ring_buffer_splice.c
+++ b/src/lib/ringbuffer/ring_buffer_splice.c
@@ -12,17 +12,22 @@
 
 #include <linux/module.h>
 #include <linux/fs.h>
-#include <linux/version.h>
+#include <lttng/kernel-version.h>
 
 #include <wrapper/splice.h>
 #include <ringbuffer/backend.h>
 #include <ringbuffer/frontend.h>
 #include <ringbuffer/vfs.h>
 
-#if 0
+#ifdef DEBUG
 #define printk_dbg(fmt, args...) printk(fmt, args)
 #else
-#define printk_dbg(fmt, args...)
+#define printk_dbg(fmt, args...)			\
+do {							\
+	/* do nothing but check printf format */	\
+	if (0)						\
+		printk(fmt, ## args);			\
+} while (0)
 #endif
 
 loff_t vfs_lib_ring_buffer_no_llseek(struct file *file, loff_t offset,
@@ -42,20 +47,20 @@ static void lib_ring_buffer_pipe_buf_release(struct pipe_inode_info *pipe,
 	__free_page(pbuf->page);
 }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,8,0))
 static const struct pipe_buf_operations ring_buffer_pipe_buf_ops = {
 	.release = lib_ring_buffer_pipe_buf_release,
 	.try_steal = generic_pipe_buf_try_steal,
 	.get = generic_pipe_buf_get
 };
-#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,1,0))
 static const struct pipe_buf_operations ring_buffer_pipe_buf_ops = {
 	.confirm = generic_pipe_buf_confirm,
 	.release = lib_ring_buffer_pipe_buf_release,
 	.steal = generic_pipe_buf_steal,
 	.get = generic_pipe_buf_get
 };
-#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0))
+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,15,0))
 static const struct pipe_buf_operations ring_buffer_pipe_buf_ops = {
 	.can_merge = 0,
 	.confirm = generic_pipe_buf_confirm,
@@ -103,7 +108,7 @@ static int subbuf_splice_actor(struct file *in,
 		.pages = pages,
 		.nr_pages = 0,
 		.partial = partial,
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0))
+#if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(4,12,0))
 		.flags = flags,
 #endif
 		.ops = &ring_buffer_pipe_buf_ops,
@@ -131,7 +136,7 @@ static int subbuf_splice_actor(struct file *in,
 	nr_pages = min_t(unsigned int, subbuf_pages, PIPE_DEF_BUFFERS);
 	roffset = consumed_old & PAGE_MASK;
 	poff = consumed_old & ~PAGE_MASK;
-	printk_dbg(KERN_DEBUG "SPLICE actor len %zu pos %zd write_pos %ld\n",
+	printk_dbg(KERN_DEBUG "LTTng: SPLICE actor len %zu pos %zd write_pos %ld\n",
 		   len, (ssize_t)*ppos, lib_ring_buffer_get_offset(config, buf));
 
 	for (; spd.nr_pages < nr_pages; spd.nr_pages++) {
@@ -142,7 +147,7 @@ static int subbuf_splice_actor(struct file *in,
 
 		if (!len)
 			break;
-		printk_dbg(KERN_DEBUG "SPLICE actor loop len %zu roffset %ld\n",
+		printk_dbg(KERN_DEBUG "LTTng: SPLICE actor loop len %zu roffset %ld\n",
 			   len, roffset);
 
 		/*
@@ -202,11 +207,11 @@ ssize_t lib_ring_buffer_splice_read(struct file *in, loff_t *ppos,
 	ret = 0;
 	spliced = 0;
 
-	printk_dbg(KERN_DEBUG "SPLICE read len %zu pos %zd\n", len,
+	printk_dbg(KERN_DEBUG "LTTng: SPLICE read len %zu pos %zd\n", len,
 		   (ssize_t)*ppos);
 	while (len && !spliced) {
 		ret = subbuf_splice_actor(in, ppos, pipe, len, flags, buf);
-		printk_dbg(KERN_DEBUG "SPLICE read loop ret %d\n", ret);
+		printk_dbg(KERN_DEBUG "LTTng: SPLICE read loop ret %d\n", ret);
 		if (ret < 0)
 			break;
 		else if (!ret) {