/* * 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 pevent_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 = pevent_find_field(event, "call_site"); if (!field) return 1; if (pevent_read_number_field(field, data, &val)) return 1; func = pevent_find_function(event->pevent, val); if (!func) return 1; addr = pevent_find_function_address(event->pevent, val); trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr)); return 1; } int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "kmem", "kfree", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmalloc", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmalloc_node", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc_node", call_site_handler, NULL); pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_free", call_site_handler, NULL); return 0; } void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) { pevent_unregister_event_handler(pevent, -1, "kmem", "kfree", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc_node", call_site_handler, NULL); pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free", call_site_handler, NULL); }