[lttng-modules.git] / instrumentation / events / lttng-module / irq.h

#undef TRACE_SYSTEM
#define TRACE_SYSTEM irq

#if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_IRQ_H

#include <linux/tracepoint.h>

#ifndef _TRACE_IRQ_DEF_
#define _TRACE_IRQ_DEF_

struct irqaction;
struct softirq_action;

#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
#define show_softirq_name(val)				\
	__print_symbolic(val,				\
			 softirq_name(HI),		\
			 softirq_name(TIMER),		\
			 softirq_name(NET_TX),		\
			 softirq_name(NET_RX),		\
			 softirq_name(BLOCK),		\
			 softirq_name(BLOCK_IOPOLL),	\
			 softirq_name(TASKLET),		\
			 softirq_name(SCHED),		\
			 softirq_name(HRTIMER),		\
			 softirq_name(RCU))

#endif /* _TRACE_IRQ_DEF_ */

/**
 * irq_handler_entry - called immediately before the irq action handler
 * @irq: irq number
 * @action: pointer to struct irqaction
 *
 * The struct irqaction pointed to by @action contains various
 * information about the handler, including the device name,
 * @action->name, and the device id, @action->dev_id. When used in
 * conjunction with the irq_handler_exit tracepoint, we can figure
 * out irq handler latencies.
 */
TRACE_EVENT(irq_handler_entry,

	TP_PROTO(int irq, struct irqaction *action),

	TP_ARGS(irq, action),

	TP_STRUCT__entry(
		__field(	int,	irq		)
		__string(	name,	action->name	)
	),

	TP_fast_assign(
		tp_assign(irq, irq)
		tp_strcpy(name, action->name)
	),

	TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
)

/**
 * irq_handler_exit - called immediately after the irq action handler returns
 * @irq: irq number
 * @action: pointer to struct irqaction
 * @ret: return value
 *
 * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
 * @action->handler scuccessully handled this irq. Otherwise, the irq might be
 * a shared irq line, or the irq was not handled successfully. Can be used in
 * conjunction with the irq_handler_entry to understand irq handler latencies.
 */
TRACE_EVENT(irq_handler_exit,

	TP_PROTO(int irq, struct irqaction *action, int ret),

	TP_ARGS(irq, action, ret),

	TP_STRUCT__entry(
		__field(	int,	irq	)
		__field(	int,	ret	)
	),

	TP_fast_assign(
		tp_assign(irq, irq)
		tp_assign(ret, ret)
	),

	TP_printk("irq=%d ret=%s",
		  __entry->irq, __entry->ret ? "handled" : "unhandled")
)

DECLARE_EVENT_CLASS(softirq,

	TP_PROTO(unsigned int vec_nr),

	TP_ARGS(vec_nr),

	TP_STRUCT__entry(
		__field(	unsigned int,	vec	)
	),

	TP_fast_assign(
		tp_assign(vec, vec_nr)
	),

	TP_printk("vec=%u [action=%s]", __entry->vec,
		  show_softirq_name(__entry->vec))
)

/**
 * softirq_entry - called immediately before the softirq handler
 * @vec_nr:  softirq vector number
 *
 * When used in combination with the softirq_exit tracepoint
 * we can determine the softirq handler runtine.
 */
DEFINE_EVENT(softirq, softirq_entry,

	TP_PROTO(unsigned int vec_nr),

	TP_ARGS(vec_nr)
)

/**
 * softirq_exit - called immediately after the softirq handler returns
 * @vec_nr:  softirq vector number
 *
 * When used in combination with the softirq_entry tracepoint
 * we can determine the softirq handler runtine.
 */
DEFINE_EVENT(softirq, softirq_exit,

	TP_PROTO(unsigned int vec_nr),

	TP_ARGS(vec_nr)
)

/**
 * softirq_raise - called immediately when a softirq is raised
 * @vec_nr:  softirq vector number
 *
 * When used in combination with the softirq_entry tracepoint
 * we can determine the softirq raise to run latency.
 */
DEFINE_EVENT(softirq, softirq_raise,

	TP_PROTO(unsigned int vec_nr),

	TP_ARGS(vec_nr)
)

#endif /*  _TRACE_IRQ_H */

/* This part must be outside protection */
#include "define_trace.h"
Commit	Line	Data
f62b389e MD	1	#undef TRACE_SYSTEM
	2	#define TRACE_SYSTEM irq
	3
	4	#if !defined(_TRACE_IRQ_H) \|\| defined(TRACE_HEADER_MULTI_READ)
	5	#define _TRACE_IRQ_H
	6
	7	#include <linux/tracepoint.h>
	8
	9	#ifndef _TRACE_IRQ_DEF_
	10	#define _TRACE_IRQ_DEF_
	11
	12	struct irqaction;
	13	struct softirq_action;
	14
	15	#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
	16	#define show_softirq_name(val) \
	17	__print_symbolic(val, \
	18	softirq_name(HI), \
	19	softirq_name(TIMER), \
	20	softirq_name(NET_TX), \
	21	softirq_name(NET_RX), \
	22	softirq_name(BLOCK), \
	23	softirq_name(BLOCK_IOPOLL), \
	24	softirq_name(TASKLET), \
	25	softirq_name(SCHED), \
	26	softirq_name(HRTIMER), \
	27	softirq_name(RCU))
	28
	29	#endif /* _TRACE_IRQ_DEF_ */
	30
	31	/**
	32	* irq_handler_entry - called immediately before the irq action handler
	33	* @irq: irq number
	34	* @action: pointer to struct irqaction
	35	*
	36	* The struct irqaction pointed to by @action contains various
	37	* information about the handler, including the device name,
	38	* @action->name, and the device id, @action->dev_id. When used in
	39	* conjunction with the irq_handler_exit tracepoint, we can figure
	40	* out irq handler latencies.
	41	*/
	42	TRACE_EVENT(irq_handler_entry,
	43
	44	TP_PROTO(int irq, struct irqaction *action),
	45
	46	TP_ARGS(irq, action),
	47
	48	TP_STRUCT__entry(
	49	__field( int, irq )
	50	__string( name, action->name )
	51	),
	52
	53	TP_fast_assign(
	54	tp_assign(irq, irq)
	55	tp_strcpy(name, action->name)
	56	),
	57
	58	TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
	59	)
	60
	61	/**
	62	* irq_handler_exit - called immediately after the irq action handler returns
	63	* @irq: irq number
	64	* @action: pointer to struct irqaction
65	* @ret: return value
66	*
67	* If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
68	* @action->handler scuccessully handled this irq. Otherwise, the irq might be
69	* a shared irq line, or the irq was not handled successfully. Can be used in
70	* conjunction with the irq_handler_entry to understand irq handler latencies.
71	*/
72	TRACE_EVENT(irq_handler_exit,
73
74	TP_PROTO(int irq, struct irqaction *action, int ret),
75
76	TP_ARGS(irq, action, ret),
77
78	TP_STRUCT__entry(
79	__field( int, irq )
80	__field( int, ret )
81	),
82
83	TP_fast_assign(
84	tp_assign(irq, irq)
85	tp_assign(ret, ret)
86	),
87
88	TP_printk("irq=%d ret=%s",
89	__entry->irq, __entry->ret ? "handled" : "unhandled")
90	)
91
92	DECLARE_EVENT_CLASS(softirq,
93
94	TP_PROTO(unsigned int vec_nr),
95
96	TP_ARGS(vec_nr),
97
98	TP_STRUCT__entry(
99	__field( unsigned int, vec )
100	),
101
102	TP_fast_assign(
103	tp_assign(vec, vec_nr)
104	),
105
106	TP_printk("vec=%u [action=%s]", __entry->vec,
107	show_softirq_name(__entry->vec))
108	)
109
110	/**
111	* softirq_entry - called immediately before the softirq handler
112	* @vec_nr: softirq vector number
113	*
114	* When used in combination with the softirq_exit tracepoint
115	* we can determine the softirq handler runtine.
116	*/
117	DEFINE_EVENT(softirq, softirq_entry,
118
119	TP_PROTO(unsigned int vec_nr),
120
121	TP_ARGS(vec_nr)
122	)
123
124	/**
125	* softirq_exit - called immediately after the softirq handler returns
126	* @vec_nr: softirq vector number
127	*
128	* When used in combination with the softirq_entry tracepoint
129	* we can determine the softirq handler runtine.
130	*/
131	DEFINE_EVENT(softirq, softirq_exit,
132
133	TP_PROTO(unsigned int vec_nr),
134
135	TP_ARGS(vec_nr)
136	)
137
138	/**
139	* softirq_raise - called immediately when a softirq is raised
140	* @vec_nr: softirq vector number
141	*
142	* When used in combination with the softirq_entry tracepoint
143	* we can determine the softirq raise to run latency.
144	*/
145	DEFINE_EVENT(softirq, softirq_raise,
146
147	TP_PROTO(unsigned int vec_nr),
148
149	TP_ARGS(vec_nr)
150	)
151
152	#endif /* _TRACE_IRQ_H */
153
154	/* This part must be outside protection */
155	#include "define_trace.h"