X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=probes%2Flttng-uprobes.c;h=64d8237ca6eac2cbbc1c07df5f976dc7dd45367c;hb=99fc3bbd1ee7870264434650b2e09d19b1de2dbe;hp=47f3599f2baa336dd6c7e543a81aef5070b67efb;hpb=3aed4dca825a63757a3c95b9d41019660f83e02d;p=lttng-modules.git

diff --git a/probes/lttng-uprobes.c b/probes/lttng-uprobes.c
index 47f3599f..64d8237c 100644
--- a/probes/lttng-uprobes.c
+++ b/probes/lttng-uprobes.c
@@ -1,4 +1,5 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
+ *
  * probes/lttng-uprobes.c
  *
  * LTTng uprobes integration module.
@@ -6,19 +7,6 @@
  * Copyright (C) 2013 Yannick Brosseau <yannick.brosseau@gmail.com>
  * 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/fdtable.h>
@@ -52,11 +40,11 @@ int lttng_uprobes_handler_pre(struct uprobe_consumer *uc, struct pt_regs *regs)
 		unsigned long 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;
 
 	lib_ring_buffer_ctx_init(&ctx, chan->chan, &lttng_probe_ctx,
@@ -67,7 +55,7 @@ int lttng_uprobes_handler_pre(struct uprobe_consumer *uc, struct pt_regs *regs)
 		return 0;
 
 	/* Event payload. */
-	payload.ip = regs->ip;
+	payload.ip = (unsigned long)instruction_pointer(regs);
 
 	lib_ring_buffer_align_ctx(&ctx, lttng_alignof(payload));
 	chan->ops->event_write(&ctx, &payload, sizeof(payload));