mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 03:16:49 +07:00
4061edaa54
The timer handlers should be unregistered when the plugin is unloaded otherwise they'll try to access invalid memory. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1389839478-5887-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
|
|
* Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
* 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 timer_expire_handler(struct trace_seq *s,
|
|
struct pevent_record *record,
|
|
struct event_format *event, void *context)
|
|
{
|
|
trace_seq_printf(s, "hrtimer=");
|
|
|
|
if (pevent_print_num_field(s, "0x%llx", event, "timer",
|
|
record, 0) == -1)
|
|
pevent_print_num_field(s, "0x%llx", event, "hrtimer",
|
|
record, 1);
|
|
|
|
trace_seq_printf(s, " now=");
|
|
|
|
pevent_print_num_field(s, "%llu", event, "now", record, 1);
|
|
|
|
pevent_print_func_field(s, " function=%s", event, "function",
|
|
record, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int timer_start_handler(struct trace_seq *s,
|
|
struct pevent_record *record,
|
|
struct event_format *event, void *context)
|
|
{
|
|
trace_seq_printf(s, "hrtimer=");
|
|
|
|
if (pevent_print_num_field(s, "0x%llx", event, "timer",
|
|
record, 0) == -1)
|
|
pevent_print_num_field(s, "0x%llx", event, "hrtimer",
|
|
record, 1);
|
|
|
|
pevent_print_func_field(s, " function=%s", event, "function",
|
|
record, 0);
|
|
|
|
trace_seq_printf(s, " expires=");
|
|
pevent_print_num_field(s, "%llu", event, "expires", record, 1);
|
|
|
|
trace_seq_printf(s, " softexpires=");
|
|
pevent_print_num_field(s, "%llu", event, "softexpires", record, 1);
|
|
return 0;
|
|
}
|
|
|
|
int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
|
|
{
|
|
pevent_register_event_handler(pevent, -1,
|
|
"timer", "hrtimer_expire_entry",
|
|
timer_expire_handler, NULL);
|
|
|
|
pevent_register_event_handler(pevent, -1, "timer", "hrtimer_start",
|
|
timer_start_handler, NULL);
|
|
return 0;
|
|
}
|
|
|
|
void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
|
|
{
|
|
pevent_unregister_event_handler(pevent, -1,
|
|
"timer", "hrtimer_expire_entry",
|
|
timer_expire_handler, NULL);
|
|
|
|
pevent_unregister_event_handler(pevent, -1, "timer", "hrtimer_start",
|
|
timer_start_handler, NULL);
|
|
}
|