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