[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")
)

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
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)
)
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
DECLARE_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("vec=%u [action=%s]", __entry->vec,
		  show_softirq_name(__entry->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.
 */
DEFINE_EVENT(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.
 */
DEFINE_EVENT(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.
 */
DEFINE_EVENT(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 /*  _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
	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
3a523f5b	92	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
f62b389e MD	93	DECLARE_EVENT_CLASS(softirq,
	94
	95	TP_PROTO(unsigned int vec_nr),
	96
	97	TP_ARGS(vec_nr),
	98
	99	TP_STRUCT__entry(
	100	__field( unsigned int, vec )
	101	),
	102
	103	TP_fast_assign(
	104	tp_assign(vec, vec_nr)
	105	),
	106
	107	TP_printk("vec=%u [action=%s]", __entry->vec,
	108	show_softirq_name(__entry->vec))
	109	)
	110
	111	/**
	112	* softirq_entry - called immediately before the softirq handler
	113	* @vec_nr: softirq vector number
	114	*
	115	* When used in combination with the softirq_exit tracepoint
	116	* we can determine the softirq handler runtine.
	117	*/
	118	DEFINE_EVENT(softirq, softirq_entry,
	119
	120	TP_PROTO(unsigned int vec_nr),
	121
	122	TP_ARGS(vec_nr)
	123	)
	124
	125	/**
	126	* softirq_exit - called immediately after the softirq handler returns
	127	* @vec_nr: softirq vector number
	128	*
	129	* When used in combination with the softirq_entry tracepoint
	130	* we can determine the softirq handler runtine.
	131	*/
	132	DEFINE_EVENT(softirq, softirq_exit,
	133
	134	TP_PROTO(unsigned int vec_nr),
	135
	136	TP_ARGS(vec_nr)
	137	)
	138
	139	/**
	140	* softirq_raise - called immediately when a softirq is raised
	141	* @vec_nr: softirq vector number
	142	*
	143	* When used in combination with the softirq_entry tracepoint
	144	* we can determine the softirq raise to run latency.
	145	*/
	146	DEFINE_EVENT(softirq, softirq_raise,
	147
	148	TP_PROTO(unsigned int vec_nr),
	149
	150	TP_ARGS(vec_nr)
	151	)
3a523f5b MD	152	#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
	153	DECLARE_EVENT_CLASS(softirq,
	154
	155	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	156
	157	TP_ARGS(h, vec),
	158
	159	TP_STRUCT__entry(
	160	__field( unsigned int, vec )
	161	),
	162
	163	TP_fast_assign(
	164	tp_assign(vec, (int)(h - vec))
	165	),
	166
	167	TP_printk("vec=%u [action=%s]", __entry->vec,
	168	show_softirq_name(__entry->vec))
	169	)
	170
	171	/**
	172	* softirq_entry - called immediately before the softirq handler
	173	* @h: pointer to struct softirq_action
	174	* @vec: pointer to first struct softirq_action in softirq_vec array
	175	*
	176	* When used in combination with the softirq_exit tracepoint
	177	* we can determine the softirq handler runtine.
	178	*/
	179	DEFINE_EVENT(softirq, softirq_entry,
	180
	181	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	182
	183	TP_ARGS(h, vec)
	184	)
	185
	186	/**
	187	* softirq_exit - called immediately after the softirq handler returns
	188	* @h: pointer to struct softirq_action
	189	* @vec: pointer to first struct softirq_action in softirq_vec array
	190	*
	191	* When used in combination with the softirq_entry tracepoint
	192	* we can determine the softirq handler runtine.
	193	*/
	194	DEFINE_EVENT(softirq, softirq_exit,
	195
	196	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	197
	198	TP_ARGS(h, vec)
	199	)
	200
	201	/**
	202	* softirq_raise - called immediately when a softirq is raised
	203	* @h: pointer to struct softirq_action
	204	* @vec: pointer to first struct softirq_action in softirq_vec array
	205	*
	206	* When used in combination with the softirq_entry tracepoint
	207	* we can determine the softirq raise to run latency.
	208	*/
	209	DEFINE_EVENT(softirq, softirq_raise,
	210
	211	TP_PROTO(struct softirq_action h, struct softirq_action vec),
	212
	213	TP_ARGS(h, vec)
	214	)
	215	#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
f62b389e MD	216
	217	#endif /* _TRACE_IRQ_H */
	218
	219	/* This part must be outside protection */
5b88d86e	220	#include "../../../probes/define_trace.h"