X-Git-Url: http://git.liburcu.org/?p=lttng-modules.git;a=blobdiff_plain;f=lttng-context-vtid.c;h=8fd68a8c27041f73d1ac0bed6c4bff2e5a433a08;hp=3dd34ae3f3a16f5b9fe39c0bcca61db9f587a6fd;hb=6bb4326c067161532e0e6f3a0deec2d28b4595e8;hpb=a90917c3f8c4ed79117f1caa333b29a2108084ec

diff --git a/lttng-context-vtid.c b/lttng-context-vtid.c
index 3dd34ae3..8fd68a8c 100644
--- a/lttng-context-vtid.c
+++ b/lttng-context-vtid.c
@@ -1,19 +1,19 @@
-/*
- * (C) Copyright	2009-2011 -
- * 		Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
+ * lttng-context-vtid.c
  *
  * LTTng vTID context.
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  */
 
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
-#include "lttng-events.h"
-#include "wrapper/ringbuffer/frontend_types.h"
-#include "wrapper/vmalloc.h"
-#include "lttng-tracer.h"
+#include <lttng-events.h>
+#include <wrapper/ringbuffer/frontend_types.h>
+#include <wrapper/vmalloc.h>
+#include <lttng-tracer.h>
 
 static
 size_t vtid_get_size(size_t offset)
@@ -43,6 +43,23 @@ void vtid_record(struct lttng_ctx_field *field,
 	chan->ops->event_write(ctx, &vtid, sizeof(vtid));
 }
 
+static
+void vtid_get_value(struct lttng_ctx_field *field,
+		struct lttng_probe_ctx *lttng_probe_ctx,
+		union lttng_ctx_value *value)
+{
+	pid_t vtid;
+
+	/*
+	 * nsproxy can be NULL when scheduled out of exit.
+	 */
+	if (!current->nsproxy)
+		vtid = 0;
+	else
+		vtid = task_pid_vnr(current);
+	value->s64 = vtid;
+}
+
 int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
 {
 	struct lttng_ctx_field *field;
@@ -58,17 +75,15 @@ int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
 	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 = 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.signedness = lttng_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;
 	field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
 	field->get_size = vtid_get_size;
 	field->record = vtid_record;
+	field->get_value = vtid_get_value;
+	lttng_context_update(*ctx);
 	wrapper_vmalloc_sync_all();
 	return 0;
 }
 EXPORT_SYMBOL_GPL(lttng_add_vtid_to_ctx);
-
-MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("Linux Trace Toolkit vTID Context");