Fix: wrapper random documentation

[lttng-modules.git] / lib / ringbuffer / backend.h

diff --git a/lib/ringbuffer/backend.h b/lib/ringbuffer/backend.h
index 9db0095638973a2e0fb6da77affde9fb30bed8f5..da4e92b9d89633039e5d609d964f32ce0e13dc03 100644 (file)
--- a/lib/ringbuffer/backend.h
+++ b/lib/ringbuffer/backend.h
@@ -1,31 +1,18 @@
-#ifndef _LIB_RING_BUFFER_BACKEND_H
-#define _LIB_RING_BUFFER_BACKEND_H
-
-/*
+/* SPDX-License-Identifier: (GPL-2.0-only OR LGPL-2.1-only)
+ *
  * lib/ringbuffer/backend.h
  *
  * Ring buffer backend (API).
  *
  * 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
- *
  * Credits to Steven Rostedt for proposing to use an extra-subbuffer owned by
  * the reader in flight recorder mode.
  */
 
+#ifndef _LIB_RING_BUFFER_BACKEND_H
+#define _LIB_RING_BUFFER_BACKEND_H
+
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/timer.h>
@@ -34,7 +21,7 @@
 #include <linux/list.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
-#include <linux/uaccess.h>
+#include <wrapper/uaccess.h>
 
 /* Internal helpers */
 #include <wrapper/ringbuffer/backend_internal.h>
@@ -169,7 +156,7 @@ size_t lib_ring_buffer_do_strcpy(const struct lib_ring_buffer_config *config,
                 * Only read source character once, in case it is
                 * modified concurrently.
                 */
-               c = ACCESS_ONCE(src[count]);
+               c = READ_ONCE(src[count]);
                if (!c)
                        break;
                lib_ring_buffer_do_copy(config, &dest[count], &c, 1);
@@ -302,7 +289,7 @@ void lib_ring_buffer_copy_from_user_inatomic(const struct lib_ring_buffer_config
 
        set_fs(KERNEL_DS);
        pagefault_disable();
-       if (unlikely(!access_ok(VERIFY_READ, src, len)))
+       if (unlikely(!lttng_access_ok(VERIFY_READ, src, len)))
                goto fill_buffer;
 
        if (likely(pagecpy == len)) {
@@ -372,7 +359,7 @@ void lib_ring_buffer_strcpy_from_user_inatomic(const struct lib_ring_buffer_conf
 
        set_fs(KERNEL_DS);
        pagefault_disable();
-       if (unlikely(!access_ok(VERIFY_READ, src, len)))
+       if (unlikely(!lttng_access_ok(VERIFY_READ, src, len)))
                goto fill_buffer;
 
        if (likely(pagecpy == len)) {
@@ -462,7 +449,7 @@ unsigned long lib_ring_buffer_copy_from_user_check_nofault(void *dest,
        unsigned long ret;
        mm_segment_t old_fs;
 
-       if (!access_ok(VERIFY_READ, src, len))
+       if (!lttng_access_ok(VERIFY_READ, src, len))
                return 1;
        old_fs = get_fs();
        set_fs(KERNEL_DS);