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

#undef TRACE_SYSTEM
#define TRACE_SYSTEM irq

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

#include "../../../probes/lttng-tracepoint-event.h"

#ifndef _TRACE_IRQ_DEF_
#define _TRACE_IRQ_DEF_

struct irqaction;
struct softirq_action;

#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.
 */
LTTNG_TRACEPOINT_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.
 */
LTTNG_TRACEPOINT_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")
)

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
LTTNG_TRACEPOINT_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()
)

/**
 * 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.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(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.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(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.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_raise,

	TP_PROTO(unsigned int vec_nr),

	TP_ARGS(vec_nr)
)
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
LTTNG_TRACEPOINT_EVENT_CLASS(softirq,

	TP_PROTO(struct softirq_action *h, struct softirq_action *vec),

	TP_ARGS(h, vec),

	TP_STRUCT__entry(
		__field(	unsigned int,	vec	)
	),

	TP_fast_assign(
		tp_assign(vec, (int)(h - vec))
	),

	TP_printk()
)

/**
 * softirq_entry - called immediately before the softirq handler
 * @h: pointer to struct softirq_action
 * @vec: pointer to first struct softirq_action in softirq_vec array
 *
 * When used in combination with the softirq_exit tracepoint
 * we can determine the softirq handler runtine.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_entry,

	TP_PROTO(struct softirq_action *h, struct softirq_action *vec),

	TP_ARGS(h, vec)
)

/**
 * softirq_exit - called immediately after the softirq handler returns
 * @h: pointer to struct softirq_action
 * @vec: pointer to first struct softirq_action in softirq_vec array
 *
 * When used in combination with the softirq_entry tracepoint
 * we can determine the softirq handler runtine.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_exit,

	TP_PROTO(struct softirq_action *h, struct softirq_action *vec),

	TP_ARGS(h, vec)
)

/**
 * softirq_raise - called immediately when a softirq is raised
 * @h: pointer to struct softirq_action
 * @vec: pointer to first struct softirq_action in softirq_vec array
 *
 * When used in combination with the softirq_entry tracepoint
 * we can determine the softirq raise to run latency.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_raise,

	TP_PROTO(struct softirq_action *h, struct softirq_action *vec),

	TP_ARGS(h, vec)
)
#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */

#endif /*  LTTNG_TRACE_IRQ_H */

/* This part must be outside protection */
#include "../../../probes/define_trace.h"
Commit	Line	Data
f62b389e MD	1	#undef TRACE_SYSTEM
	2	#define TRACE_SYSTEM irq
	3
3bc29f0a MD	4	#if !defined(LTTNG_TRACE_IRQ_H) \|\| defined(TRACE_HEADER_MULTI_READ)
3bc29f0a MD	5	#define LTTNG_TRACE_IRQ_H
f62b389e	6
3bc29f0a	7	#include "../../../probes/lttng-tracepoint-event.h"
f62b389e MD	8
	9	#ifndef _TRACE_IRQ_DEF_
	10	#define _TRACE_IRQ_DEF_
	11
	12	struct irqaction;
	13	struct softirq_action;
	14
f62b389e MD	15	#endif /* _TRACE_IRQ_DEF_ */
	16
	17	/**
	18	* irq_handler_entry - called immediately before the irq action handler
	19	* @irq: irq number
	20	* @action: pointer to struct irqaction
	21	*
	22	* The struct irqaction pointed to by @action contains various
	23	* information about the handler, including the device name,
	24	* @action->name, and the device id, @action->dev_id. When used in
	25	* conjunction with the irq_handler_exit tracepoint, we can figure
	26	* out irq handler latencies.
	27	*/
3bc29f0a	28	LTTNG_TRACEPOINT_EVENT(irq_handler_entry,
f62b389e MD	29
	30	TP_PROTO(int irq, struct irqaction *action),
	31
	32	TP_ARGS(irq, action),
	33
	34	TP_STRUCT__entry(
	35	__field( int, irq )
	36	__string( name, action->name )
	37	),
	38
	39	TP_fast_assign(
	40	tp_assign(irq, irq)
	41	tp_strcpy(name, action->name)
	42	),
	43
	44	TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
	45	)
	46
	47	/**
	48	* irq_handler_exit - called immediately after the irq action handler returns
	49	* @irq: irq number
	50	* @action: pointer to struct irqaction
	51	* @ret: return value
	52	*
	53	* If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
	54	* @action->handler scuccessully handled this irq. Otherwise, the irq might be
	55	* a shared irq line, or the irq was not handled successfully. Can be used in
	56	* conjunction with the irq_handler_entry to understand irq handler latencies.
	57	*/
3bc29f0a	58	LTTNG_TRACEPOINT_EVENT(irq_handler_exit,
f62b389e MD	59
	60	TP_PROTO(int irq, struct irqaction *action, int ret),
	61
	62	TP_ARGS(irq, action, ret),
	63
	64	TP_STRUCT__entry(
	65	__field( int, irq )
	66	__field( int, ret )
	67	),
	68
	69	TP_fast_assign(
	70	tp_assign(irq, irq)
	71	tp_assign(ret, ret)
	72	),
	73
	74	TP_printk("irq=%d ret=%s",
	75	__entry->irq, __entry->ret ? "handled" : "unhandled")
	76	)
	77
3a523f5b	78	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
3bc29f0a	79	LTTNG_TRACEPOINT_EVENT_CLASS(softirq,
f62b389e MD	80
	81	TP_PROTO(unsigned int vec_nr),
	82
	83	TP_ARGS(vec_nr),
	84
	85	TP_STRUCT__entry(
	86	__field( unsigned int, vec )
	87	),
	88
	89	TP_fast_assign(
	90	tp_assign(vec, vec_nr)
	91	),
	92
28bba019	93	TP_printk()
f62b389e MD	94	)
	95
	96	/**
	97	* softirq_entry - called immediately before the softirq handler
	98	* @vec_nr: softirq vector number
	99	*
	100	* When used in combination with the softirq_exit tracepoint
	101	* we can determine the softirq handler runtine.
	102	*/
3bc29f0a	103	LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_entry,
f62b389e MD	104
	105	TP_PROTO(unsigned int vec_nr),
	106
	107	TP_ARGS(vec_nr)
	108	)
	109
	110	/**
	111	* softirq_exit - called immediately after the softirq handler returns
	112	* @vec_nr: softirq vector number
	113	*
	114	* When used in combination with the softirq_entry tracepoint
	115	* we can determine the softirq handler runtine.
	116	*/
3bc29f0a	117	LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_exit,
f62b389e MD	118
	119	TP_PROTO(unsigned int vec_nr),
	120
	121	TP_ARGS(vec_nr)
	122	)
	123
	124	/**
	125	* softirq_raise - called immediately when a softirq is raised
	126	* @vec_nr: softirq vector number
	127	*
	128	* When used in combination with the softirq_entry tracepoint
	129	* we can determine the softirq raise to run latency.
	130	*/
3bc29f0a	131	LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_raise,
f62b389e MD	132
	133	TP_PROTO(unsigned int vec_nr),
	134
	135	TP_ARGS(vec_nr)
	136	)
3a523f5b	137	#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
3bc29f0a	138	LTTNG_TRACEPOINT_EVENT_CLASS(softirq,
3a523f5b MD	139
	140	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	141
	142	TP_ARGS(h, vec),
	143
	144	TP_STRUCT__entry(
	145	__field( unsigned int, vec )
	146	),
	147
	148	TP_fast_assign(
	149	tp_assign(vec, (int)(h - vec))
	150	),
	151
28bba019	152	TP_printk()
3a523f5b MD	153	)
	154
	155	/**
	156	* softirq_entry - called immediately before the softirq handler
	157	* @h: pointer to struct softirq_action
	158	* @vec: pointer to first struct softirq_action in softirq_vec array
	159	*
	160	* When used in combination with the softirq_exit tracepoint
	161	* we can determine the softirq handler runtine.
	162	*/
3bc29f0a	163	LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_entry,
3a523f5b MD	164
	165	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	166
	167	TP_ARGS(h, vec)
	168	)
	169
	170	/**
	171	* softirq_exit - called immediately after the softirq handler returns
	172	* @h: pointer to struct softirq_action
	173	* @vec: pointer to first struct softirq_action in softirq_vec array
	174	*
	175	* When used in combination with the softirq_entry tracepoint
	176	* we can determine the softirq handler runtine.
	177	*/
3bc29f0a	178	LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_exit,
3a523f5b MD	179
	180	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	181
	182	TP_ARGS(h, vec)
	183	)
	184
	185	/**
	186	* softirq_raise - called immediately when a softirq is raised
	187	* @h: pointer to struct softirq_action
	188	* @vec: pointer to first struct softirq_action in softirq_vec array
	189	*
	190	* When used in combination with the softirq_entry tracepoint
	191	* we can determine the softirq raise to run latency.
	192	*/
3bc29f0a	193	LTTNG_TRACEPOINT_EVENT_INSTANCE(softirq, softirq_raise,
3a523f5b MD	194
	195	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	196
	197	TP_ARGS(h, vec)
	198	)
	199	#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
f62b389e	200
3bc29f0a	201	#endif /* LTTNG_TRACE_IRQ_H */
f62b389e MD	202
f62b389e MD	203	/* This part must be outside protection */
5b88d86e	204	#include "../../../probes/define_trace.h"