2 #define TRACE_SYSTEM irq
4 #if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/tracepoint.h>
9 #ifndef _TRACE_IRQ_DEF_
10 #define _TRACE_IRQ_DEF_
13 struct softirq_action
;
15 #define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
16 #define show_softirq_name(val) \
17 __print_symbolic(val, \
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), \
29 #endif /* _TRACE_IRQ_DEF_ */
32 * irq_handler_entry - called immediately before the irq action handler
34 * @action: pointer to struct irqaction
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.
42 TRACE_EVENT(irq_handler_entry
,
44 TP_PROTO(int irq
, struct irqaction
*action
),
50 __string( name
, action
->name
)
55 tp_strcpy(name
, action
->name
)
58 TP_printk("irq=%d name=%s", __entry
->irq
, __get_str(name
))
62 * irq_handler_exit - called immediately after the irq action handler returns
64 * @action: pointer to struct irqaction
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.
72 TRACE_EVENT(irq_handler_exit
,
74 TP_PROTO(int irq
, struct irqaction
*action
, int ret
),
76 TP_ARGS(irq
, action
, ret
),
88 TP_printk("irq=%d ret=%s",
89 __entry
->irq
, __entry
->ret
? "handled" : "unhandled")
92 DECLARE_EVENT_CLASS(softirq
,
94 TP_PROTO(unsigned int vec_nr
),
99 __field( unsigned int, vec
)
103 tp_assign(vec
, vec_nr
)
106 TP_printk("vec=%u [action=%s]", __entry
->vec
,
107 show_softirq_name(__entry
->vec
))
111 * softirq_entry - called immediately before the softirq handler
112 * @vec_nr: softirq vector number
114 * When used in combination with the softirq_exit tracepoint
115 * we can determine the softirq handler runtine.
117 DEFINE_EVENT(softirq
, softirq_entry
,
119 TP_PROTO(unsigned int vec_nr
),
125 * softirq_exit - called immediately after the softirq handler returns
126 * @vec_nr: softirq vector number
128 * When used in combination with the softirq_entry tracepoint
129 * we can determine the softirq handler runtine.
131 DEFINE_EVENT(softirq
, softirq_exit
,
133 TP_PROTO(unsigned int vec_nr
),
139 * softirq_raise - called immediately when a softirq is raised
140 * @vec_nr: softirq vector number
142 * When used in combination with the softirq_entry tracepoint
143 * we can determine the softirq raise to run latency.
145 DEFINE_EVENT(softirq
, softirq_raise
,
147 TP_PROTO(unsigned int vec_nr
),
152 #endif /* _TRACE_IRQ_H */
154 /* This part must be outside protection */
155 #include "../../../probes/define_trace.h"
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