linux-stable/include/trace/events/watchdog.h
Uwe Kleine-König e25b091bed watchdog: Add tracing events for the most usual watchdog events
To simplify debugging which process touches a watchdog and when, add
tracing events for .start(), .set_timeout(), .ping() and .stop().

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20221008174602.3972859-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-12 09:47:02 +02:00

66 lines
1.5 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM watchdog
#if !defined(_TRACE_WATCHDOG_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_WATCHDOG_H
#include <linux/watchdog.h>
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(watchdog_template,
TP_PROTO(struct watchdog_device *wdd, int err),
TP_ARGS(wdd, err),
TP_STRUCT__entry(
__field(int, id)
__field(int, err)
),
TP_fast_assign(
__entry->id = wdd->id;
__entry->err = err;
),
TP_printk("watchdog%d err=%d", __entry->id, __entry->err)
);
DEFINE_EVENT(watchdog_template, watchdog_start,
TP_PROTO(struct watchdog_device *wdd, int err),
TP_ARGS(wdd, err));
DEFINE_EVENT(watchdog_template, watchdog_ping,
TP_PROTO(struct watchdog_device *wdd, int err),
TP_ARGS(wdd, err));
DEFINE_EVENT(watchdog_template, watchdog_stop,
TP_PROTO(struct watchdog_device *wdd, int err),
TP_ARGS(wdd, err));
TRACE_EVENT(watchdog_set_timeout,
TP_PROTO(struct watchdog_device *wdd, unsigned int timeout, int err),
TP_ARGS(wdd, timeout, err),
TP_STRUCT__entry(
__field(int, id)
__field(unsigned int, timeout)
__field(int, err)
),
TP_fast_assign(
__entry->id = wdd->id;
__entry->timeout = timeout;
__entry->err = err;
),
TP_printk("watchdog%d timeout=%u err=%d", __entry->id, __entry->timeout, __entry->err)
);
#endif /* !defined(_TRACE_WATCHDOG_H) || defined(TRACE_HEADER_MULTI_READ) */
/* This part must be outside protection */
#include <trace/define_trace.h>