X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-context-vtid.c;h=3dd34ae3f3a16f5b9fe39c0bcca61db9f587a6fd;hb=f97eaafb28e11d68919a6d53278b117343f33d60;hp=f81fff636acd35d914a2756c567e68d03d562c24;hpb=09fec6b43d11b3e0ece36f9e9e44b9627c1b565d;p=lttng-modules.git

diff --git a/lttng-context-vtid.c b/lttng-context-vtid.c
index f81fff63..3dd34ae3 100644
--- a/lttng-context-vtid.c
+++ b/lttng-context-vtid.c
@@ -10,17 +10,17 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
-#include "ltt-events.h"
+#include "lttng-events.h"
 #include "wrapper/ringbuffer/frontend_types.h"
 #include "wrapper/vmalloc.h"
-#include "ltt-tracer.h"
+#include "lttng-tracer.h"
 
 static
 size_t vtid_get_size(size_t offset)
 {
 	size_t size = 0;
 
-	size += lib_ring_buffer_align(offset, ltt_alignof(pid_t));
+	size += lib_ring_buffer_align(offset, lttng_alignof(pid_t));
 	size += sizeof(pid_t);
 	return size;
 }
@@ -28,27 +28,36 @@ size_t vtid_get_size(size_t offset)
 static
 void vtid_record(struct lttng_ctx_field *field,
 		 struct lib_ring_buffer_ctx *ctx,
-		 struct ltt_channel *chan)
+		 struct lttng_channel *chan)
 {
 	pid_t vtid;
 
-	vtid = task_pid_vnr(current);
-	lib_ring_buffer_align_ctx(ctx, ltt_alignof(vtid));
+	/*
+	 * nsproxy can be NULL when scheduled out of exit.
+	 */
+	if (!current->nsproxy)
+		vtid = 0;
+	else
+		vtid = task_pid_vnr(current);
+	lib_ring_buffer_align_ctx(ctx, lttng_alignof(vtid));
 	chan->ops->event_write(ctx, &vtid, sizeof(vtid));
 }
 
 int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
 {
 	struct lttng_ctx_field *field;
-	int ret;
 
 	field = lttng_append_context(ctx);
 	if (!field)
 		return -ENOMEM;
+	if (lttng_find_context(*ctx, "vtid")) {
+		lttng_remove_context_field(ctx, field);
+		return -EEXIST;
+	}
 	field->event_field.name = "vtid";
 	field->event_field.type.atype = atype_integer;
 	field->event_field.type.u.basic.integer.size = sizeof(pid_t) * CHAR_BIT;
-	field->event_field.type.u.basic.integer.alignment = ltt_alignof(pid_t) * CHAR_BIT;
+	field->event_field.type.u.basic.integer.alignment = lttng_alignof(pid_t) * CHAR_BIT;
 	field->event_field.type.u.basic.integer.signedness = is_signed_type(pid_t);
 	field->event_field.type.u.basic.integer.reverse_byte_order = 0;
 	field->event_field.type.u.basic.integer.base = 10;