Fix: signal: Remove SEND_SIG_FORCED (v4.20)

[lttng-modules.git] / probes / lttng-kretprobes.c

diff --git a/probes/lttng-kretprobes.c b/probes/lttng-kretprobes.c
index 498df620fa3a29d29147f1a5dc386695c3620f9c..84eca9b350ff86c1c643695d01f7fbe927270bae 100644 (file)
--- a/probes/lttng-kretprobes.c
+++ b/probes/lttng-kretprobes.c
@@ -1,23 +1,10 @@
-/*
-* probes/lttng-kretprobes.c
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
+ * probes/lttng-kretprobes.c
  *
  * LTTng kretprobes integration module.
  *
  * Copyright (C) 2009-2012 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
  */
 
 #include <linux/module.h>
@@ -63,11 +50,11 @@ int _lttng_kretprobes_handler(struct kretprobe_instance *krpi,
                unsigned long parent_ip;
        } payload;
 
-       if (unlikely(!ACCESS_ONCE(chan->session->active)))
+       if (unlikely(!READ_ONCE(chan->session->active)))
                return 0;
-       if (unlikely(!ACCESS_ONCE(chan->enabled)))
+       if (unlikely(!READ_ONCE(chan->enabled)))
                return 0;
-       if (unlikely(!ACCESS_ONCE(event->enabled)))
+       if (unlikely(!READ_ONCE(event->enabled)))
                return 0;
 
        payload.ip = (unsigned long) krpi->rp->kp.addr;
@@ -304,15 +291,15 @@ int lttng_kretprobes_event_enable_state(struct lttng_event *event,
        }
        lttng_krp = event->u.kretprobe.lttng_krp;
        event_return = lttng_krp->event[EVENT_RETURN];
-       ACCESS_ONCE(event->enabled) = enable;
-       ACCESS_ONCE(event_return->enabled) = enable;
+       WRITE_ONCE(event->enabled, enable);
+       WRITE_ONCE(event_return->enabled, enable);
        return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_kretprobes_event_enable_state);
 
 MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("Linux Trace Toolkit Kretprobes Support");
+MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
+MODULE_DESCRIPTION("LTTng kretprobes probes");
 MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
        __stringify(LTTNG_MODULES_MINOR_VERSION) "."
        __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)