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/*
* 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);
}
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