v4.19.13 snapshot.
diff --git a/tools/lib/traceevent/plugin_kmem.c b/tools/lib/traceevent/plugin_kmem.c
new file mode 100644
index 0000000..73966b0
--- /dev/null
+++ b/tools/lib/traceevent/plugin_kmem.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * This program 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;
+ * version 2.1 of the License (not later!)
+ *
+ * This program 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 program; if not, see <http://www.gnu.org/licenses>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "event-parse.h"
+
+static int call_site_handler(struct trace_seq *s, struct tep_record *record,
+ struct event_format *event, void *context)
+{
+ struct format_field *field;
+ unsigned long long val, addr;
+ void *data = record->data;
+ const char *func;
+
+ field = tep_find_field(event, "call_site");
+ if (!field)
+ return 1;
+
+ if (tep_read_number_field(field, data, &val))
+ return 1;
+
+ func = tep_find_function(event->pevent, val);
+ if (!func)
+ return 1;
+
+ addr = tep_find_function_address(event->pevent, val);
+
+ trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr));
+ return 1;
+}
+
+int TEP_PLUGIN_LOADER(struct tep_handle *pevent)
+{
+ tep_register_event_handler(pevent, -1, "kmem", "kfree",
+ call_site_handler, NULL);
+
+ tep_register_event_handler(pevent, -1, "kmem", "kmalloc",
+ call_site_handler, NULL);
+
+ tep_register_event_handler(pevent, -1, "kmem", "kmalloc_node",
+ call_site_handler, NULL);
+
+ tep_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc",
+ call_site_handler, NULL);
+
+ tep_register_event_handler(pevent, -1, "kmem",
+ "kmem_cache_alloc_node",
+ call_site_handler, NULL);
+
+ tep_register_event_handler(pevent, -1, "kmem", "kmem_cache_free",
+ call_site_handler, NULL);
+ return 0;
+}
+
+void TEP_PLUGIN_UNLOADER(struct tep_handle *pevent)
+{
+ tep_unregister_event_handler(pevent, -1, "kmem", "kfree",
+ call_site_handler, NULL);
+
+ tep_unregister_event_handler(pevent, -1, "kmem", "kmalloc",
+ call_site_handler, NULL);
+
+ tep_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node",
+ call_site_handler, NULL);
+
+ tep_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc",
+ call_site_handler, NULL);
+
+ tep_unregister_event_handler(pevent, -1, "kmem",
+ "kmem_cache_alloc_node",
+ call_site_handler, NULL);
+
+ tep_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free",
+ call_site_handler, NULL);
+}