X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fring_buffer_iterator.c;h=ccfef7ddcf62e70daf4dddeae24258b1e3705f95;hb=8bbb8c9d83b2e11ef84e4df89f7cf06df43d23b9;hp=61eaa5b775ece93034391c6e169ecbafd7cc78da;hpb=a8f2d0c75c9cc179fc9e7f7ca17ea3b3b3b5af41;p=lttng-modules.git

diff --git a/lib/ringbuffer/ring_buffer_iterator.c b/lib/ringbuffer/ring_buffer_iterator.c
index 61eaa5b7..ccfef7dd 100644
--- a/lib/ringbuffer/ring_buffer_iterator.c
+++ b/lib/ringbuffer/ring_buffer_iterator.c
@@ -1,4 +1,5 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
+ *
  * ring_buffer_iterator.c
  *
  * Ring buffer and channel iterators. Get each event of a channel in order. Uses
@@ -6,27 +7,11 @@
  * complexity for the "get next event" operation.
  *
  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Author:
- *	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
 #include <wrapper/ringbuffer/iterator.h>
 #include <wrapper/file.h>
+#include <wrapper/uaccess.h>
 #include <linux/jiffies.h>
 #include <linux/delay.h>
 #include <linux/module.h>
@@ -61,7 +46,7 @@ restart:
 	switch (iter->state) {
 	case ITER_GET_SUBBUF:
 		ret = lib_ring_buffer_get_next_subbuf(buf);
-		if (ret && !READ_ONCE(buf->finalized)
+		if (ret && !LTTNG_READ_ONCE(buf->finalized)
 		    && config->alloc == RING_BUFFER_ALLOC_GLOBAL) {
 			/*
 			 * Use "pull" scheme for global buffers. The reader
@@ -350,7 +335,7 @@ void lib_ring_buffer_iterator_init(struct channel *chan, struct lib_ring_buffer
 		list_add(&buf->iter.empty_node, &chan->iter.empty_head);
 }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 
 int lttng_cpuhp_rb_iter_online(unsigned int cpu,
 		struct lttng_cpuhp_node *node)
@@ -367,7 +352,7 @@ int lttng_cpuhp_rb_iter_online(unsigned int cpu,
 }
 EXPORT_SYMBOL_GPL(lttng_cpuhp_rb_iter_online);
 
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 #ifdef CONFIG_HOTPLUG_CPU
 static
@@ -399,7 +384,7 @@ int channel_iterator_cpu_hotplug(struct notifier_block *nb,
 }
 #endif
 
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 int channel_iterator_init(struct channel *chan)
 {
@@ -416,13 +401,13 @@ int channel_iterator_init(struct channel *chan)
 		if (ret)
 			return ret;
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 		chan->cpuhp_iter_online.component = LTTNG_RING_BUFFER_ITER;
 		ret = cpuhp_state_add_instance(lttng_rb_hp_online,
 			&chan->cpuhp_iter_online.node);
 		if (ret)
 			return ret;
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 		{
 			int cpu;
 
@@ -451,7 +436,7 @@ int channel_iterator_init(struct channel *chan)
 			}
 #endif
 		}
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 	} else {
 		buf = channel_get_ring_buffer(config, chan, 0);
 		lib_ring_buffer_iterator_init(chan, buf);
@@ -464,7 +449,7 @@ void channel_iterator_unregister_notifiers(struct channel *chan)
 	const struct lib_ring_buffer_config *config = &chan->backend.config;
 
 	if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 		{
 			int ret;
 
@@ -472,10 +457,10 @@ void channel_iterator_unregister_notifiers(struct channel *chan)
 				&chan->cpuhp_iter_online.node);
 			WARN_ON(ret);
 		}
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 		chan->hp_iter_enable = 0;
 		unregister_cpu_notifier(&chan->hp_iter_notifier);
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 	}
 }
 
@@ -621,7 +606,7 @@ ssize_t channel_ring_buffer_file_read(struct file *filp,
 	ssize_t len;
 
 	might_sleep();
-	if (!access_ok(VERIFY_WRITE, user_buf, count))
+	if (!lttng_access_ok(VERIFY_WRITE, user_buf, count))
 		return -EFAULT;
 
 	/* Finish copy of previous record */