[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_FIELDS(
		ctf_integer(int, irq, irq)
		ctf_string(name, action->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_FIELDS(
		ctf_integer(int, irq, irq)
		ctf_integer(int, ret, ret)
	)
)

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

	TP_PROTO(unsigned int vec_nr),

	TP_ARGS(vec_nr),

	TP_FIELDS(
		ctf_integer(unsigned int, vec, vec_nr)
	)
)

/**
 * 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_MAP(irq_softirq, softirq_entry,

	irq_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_MAP(irq_softirq, softirq_exit,

	irq_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_MAP(irq_softirq, softirq_raise,

	irq_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(irq_softirq,

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

	TP_ARGS(h, vec),

	TP_FIELDS(
		ctf_integer(unsigned int, vec, (int)(h - vec))
	)
)

/**
 * 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_MAP(irq_softirq, softirq_entry,

	irq_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_MAP(irq_softirq, softirq_exit,

	irq_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_MAP(irq_softirq, softirq_raise,

	irq_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
	1	#undef TRACE_SYSTEM
	2	#define TRACE_SYSTEM irq
	3
	4	#if !defined(LTTNG_TRACE_IRQ_H) \|\| defined(TRACE_HEADER_MULTI_READ)
	5	#define LTTNG_TRACE_IRQ_H
	6
	7	#include <probes/lttng-tracepoint-event.h>
	8
	9	#ifndef _TRACE_IRQ_DEF_
	10	#define _TRACE_IRQ_DEF_
	11
	12	struct irqaction;
	13	struct softirq_action;
	14
	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	*/
	28	LTTNG_TRACEPOINT_EVENT(irq_handler_entry,
	29
	30	TP_PROTO(int irq, struct irqaction *action),
	31
	32	TP_ARGS(irq, action),
	33
	34	TP_FIELDS(
	35	ctf_integer(int, irq, irq)
	36	ctf_string(name, action->name)
	37	)
	38	)
	39
	40	/**
	41	* irq_handler_exit - called immediately after the irq action handler returns
	42	* @irq: irq number
	43	* @action: pointer to struct irqaction
	44	* @ret: return value
	45	*
	46	* If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
	47	* @action->handler scuccessully handled this irq. Otherwise, the irq might be
	48	* a shared irq line, or the irq was not handled successfully. Can be used in
	49	* conjunction with the irq_handler_entry to understand irq handler latencies.
	50	*/
	51	LTTNG_TRACEPOINT_EVENT(irq_handler_exit,
	52
	53	TP_PROTO(int irq, struct irqaction *action, int ret),
	54
	55	TP_ARGS(irq, action, ret),
	56
	57	TP_FIELDS(
	58	ctf_integer(int, irq, irq)
	59	ctf_integer(int, ret, ret)
	60	)
	61	)
	62
	63	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
	64	LTTNG_TRACEPOINT_EVENT_CLASS(irq_softirq,
	65
	66	TP_PROTO(unsigned int vec_nr),
	67
	68	TP_ARGS(vec_nr),
	69
	70	TP_FIELDS(
	71	ctf_integer(unsigned int, vec, vec_nr)
	72	)
	73	)
	74
	75	/**
	76	* softirq_entry - called immediately before the softirq handler
	77	* @vec_nr: softirq vector number
	78	*
	79	* When used in combination with the softirq_exit tracepoint
	80	* we can determine the softirq handler runtine.
	81	*/
	82	LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(irq_softirq, softirq_entry,
	83
	84	irq_softirq_entry,
	85
	86	TP_PROTO(unsigned int vec_nr),
	87
	88	TP_ARGS(vec_nr)
	89	)
	90
	91	/**
	92	* softirq_exit - called immediately after the softirq handler returns
	93	* @vec_nr: softirq vector number
	94	*
	95	* When used in combination with the softirq_entry tracepoint
	96	* we can determine the softirq handler runtine.
	97	*/
	98	LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(irq_softirq, softirq_exit,
	99
	100	irq_softirq_exit,
	101
	102	TP_PROTO(unsigned int vec_nr),
	103
	104	TP_ARGS(vec_nr)
	105	)
	106
	107	/**
	108	* softirq_raise - called immediately when a softirq is raised
	109	* @vec_nr: softirq vector number
	110	*
	111	* When used in combination with the softirq_entry tracepoint
	112	* we can determine the softirq raise to run latency.
	113	*/
	114	LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(irq_softirq, softirq_raise,
	115
	116	irq_softirq_raise,
	117
	118	TP_PROTO(unsigned int vec_nr),
	119
	120	TP_ARGS(vec_nr)
	121	)
	122	#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
	123	LTTNG_TRACEPOINT_EVENT_CLASS(irq_softirq,
	124
	125	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	126
	127	TP_ARGS(h, vec),
	128
	129	TP_FIELDS(
	130	ctf_integer(unsigned int, vec, (int)(h - vec))
	131	)
	132	)
	133
	134	/**
	135	* softirq_entry - called immediately before the softirq handler
	136	* @h: pointer to struct softirq_action
	137	* @vec: pointer to first struct softirq_action in softirq_vec array
	138	*
	139	* When used in combination with the softirq_exit tracepoint
	140	* we can determine the softirq handler runtine.
	141	*/
	142	LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(irq_softirq, softirq_entry,
	143
	144	irq_softirq_entry,
	145
	146	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	147
	148	TP_ARGS(h, vec)
	149	)
	150
	151	/**
	152	* softirq_exit - called immediately after the softirq handler returns
	153	* @h: pointer to struct softirq_action
	154	* @vec: pointer to first struct softirq_action in softirq_vec array
	155	*
	156	* When used in combination with the softirq_entry tracepoint
	157	* we can determine the softirq handler runtine.
	158	*/
	159	LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(irq_softirq, softirq_exit,
	160
	161	irq_softirq_exit,
	162
	163	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	164
	165	TP_ARGS(h, vec)
	166	)
	167
	168	/**
	169	* softirq_raise - called immediately when a softirq is raised
	170	* @h: pointer to struct softirq_action
	171	* @vec: pointer to first struct softirq_action in softirq_vec array
	172	*
	173	* When used in combination with the softirq_entry tracepoint
	174	* we can determine the softirq raise to run latency.
	175	*/
	176	LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(irq_softirq, softirq_raise,
	177
	178	irq_softirq_raise,
	179
	180	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	181
	182	TP_ARGS(h, vec)
	183	)
	184	#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
	185
	186	#endif /* LTTNG_TRACE_IRQ_H */
	187
	188	/* This part must be outside protection */
	189	#include <probes/define_trace.h>