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1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM irq
4
5#if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_IRQ_H
7
8#include <linux/tracepoint.h>
9
10struct irqaction;
11struct softirq_action;
12
13#define SOFTIRQ_NAME_LIST \
14 softirq_name(HI) \
15 softirq_name(TIMER) \
16 softirq_name(NET_TX) \
17 softirq_name(NET_RX) \
18 softirq_name(BLOCK) \
19 softirq_name(IRQ_POLL) \
20 softirq_name(TASKLET) \
21 softirq_name(SCHED) \
22 softirq_name(HRTIMER) \
23 softirq_name_end(RCU)
24
25#undef softirq_name
26#undef softirq_name_end
27
28#define softirq_name(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
29#define softirq_name_end(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
30
31SOFTIRQ_NAME_LIST
32
33#undef softirq_name
34#undef softirq_name_end
35
36#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq },
37#define softirq_name_end(sirq) { sirq##_SOFTIRQ, #sirq }
38
39#define show_softirq_name(val) \
40 __print_symbolic(val, SOFTIRQ_NAME_LIST)
41
42/**
43 * irq_handler_entry - called immediately before the irq action handler
44 * @irq: irq number
45 * @action: pointer to struct irqaction
46 *
47 * The struct irqaction pointed to by @action contains various
48 * information about the handler, including the device name,
49 * @action->name, and the device id, @action->dev_id. When used in
50 * conjunction with the irq_handler_exit tracepoint, we can figure
51 * out irq handler latencies.
52 */
53TRACE_EVENT(irq_handler_entry,
54
55 TP_PROTO(int irq, struct irqaction *action),
56
57 TP_ARGS(irq, action),
58
59 TP_STRUCT__entry(
60 __field( int, irq )
61 __string( name, action->name )
62 ),
63
64 TP_fast_assign(
65 __entry->irq = irq;
66 __assign_str(name, action->name);
67 ),
68
69 TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
70);
71
72/**
73 * irq_handler_exit - called immediately after the irq action handler returns
74 * @irq: irq number
75 * @action: pointer to struct irqaction
76 * @ret: return value
77 *
78 * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
79 * @action->handler successfully handled this irq. Otherwise, the irq might be
80 * a shared irq line, or the irq was not handled successfully. Can be used in
81 * conjunction with the irq_handler_entry to understand irq handler latencies.
82 */
83TRACE_EVENT(irq_handler_exit,
84
85 TP_PROTO(int irq, struct irqaction *action, int ret),
86
87 TP_ARGS(irq, action, ret),
88
89 TP_STRUCT__entry(
90 __field( int, irq )
91 __field( int, ret )
92 ),
93
94 TP_fast_assign(
95 __entry->irq = irq;
96 __entry->ret = ret;
97 ),
98
99 TP_printk("irq=%d ret=%s",
100 __entry->irq, __entry->ret ? "handled" : "unhandled")
101);
102
103DECLARE_EVENT_CLASS(softirq,
104
105 TP_PROTO(unsigned int vec_nr),
106
107 TP_ARGS(vec_nr),
108
109 TP_STRUCT__entry(
110 __field( unsigned int, vec )
111 ),
112
113 TP_fast_assign(
114 __entry->vec = vec_nr;
115 ),
116
117 TP_printk("vec=%u [action=%s]", __entry->vec,
118 show_softirq_name(__entry->vec))
119);
120
121/**
122 * softirq_entry - called immediately before the softirq handler
123 * @vec_nr: softirq vector number
124 *
125 * When used in combination with the softirq_exit tracepoint
126 * we can determine the softirq handler routine.
127 */
128DEFINE_EVENT(softirq, softirq_entry,
129
130 TP_PROTO(unsigned int vec_nr),
131
132 TP_ARGS(vec_nr)
133);
134
135/**
136 * softirq_exit - called immediately after the softirq handler returns
137 * @vec_nr: softirq vector number
138 *
139 * When used in combination with the softirq_entry tracepoint
140 * we can determine the softirq handler routine.
141 */
142DEFINE_EVENT(softirq, softirq_exit,
143
144 TP_PROTO(unsigned int vec_nr),
145
146 TP_ARGS(vec_nr)
147);
148
149/**
150 * softirq_raise - called immediately when a softirq is raised
151 * @vec_nr: softirq vector number
152 *
153 * When used in combination with the softirq_entry tracepoint
154 * we can determine the softirq raise to run latency.
155 */
156DEFINE_EVENT(softirq, softirq_raise,
157
158 TP_PROTO(unsigned int vec_nr),
159
160 TP_ARGS(vec_nr)
161);
162
163#endif /* _TRACE_IRQ_H */
164
165/* This part must be outside protection */
166#include <trace/define_trace.h>
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
9struct irqaction;
10struct softirq_action;
11
12#define SOFTIRQ_NAME_LIST \
13 softirq_name(HI) \
14 softirq_name(TIMER) \
15 softirq_name(NET_TX) \
16 softirq_name(NET_RX) \
17 softirq_name(BLOCK) \
18 softirq_name(IRQ_POLL) \
19 softirq_name(TASKLET) \
20 softirq_name(SCHED) \
21 softirq_name(HRTIMER) \
22 softirq_name_end(RCU)
23
24#undef softirq_name
25#undef softirq_name_end
26
27#define softirq_name(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
28#define softirq_name_end(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
29
30SOFTIRQ_NAME_LIST
31
32#undef softirq_name
33#undef softirq_name_end
34
35#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq },
36#define softirq_name_end(sirq) { sirq##_SOFTIRQ, #sirq }
37
38#define show_softirq_name(val) \
39 __print_symbolic(val, SOFTIRQ_NAME_LIST)
40
41/**
42 * irq_handler_entry - called immediately before the irq action handler
43 * @irq: irq number
44 * @action: pointer to struct irqaction
45 *
46 * The struct irqaction pointed to by @action contains various
47 * information about the handler, including the device name,
48 * @action->name, and the device id, @action->dev_id. When used in
49 * conjunction with the irq_handler_exit tracepoint, we can figure
50 * out irq handler latencies.
51 */
52TRACE_EVENT(irq_handler_entry,
53
54 TP_PROTO(int irq, struct irqaction *action),
55
56 TP_ARGS(irq, action),
57
58 TP_STRUCT__entry(
59 __field( int, irq )
60 __string( name, action->name )
61 ),
62
63 TP_fast_assign(
64 __entry->irq = irq;
65 __assign_str(name, action->name);
66 ),
67
68 TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
69);
70
71/**
72 * irq_handler_exit - called immediately after the irq action handler returns
73 * @irq: irq number
74 * @action: pointer to struct irqaction
75 * @ret: return value
76 *
77 * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
78 * @action->handler successfully handled this irq. Otherwise, the irq might be
79 * a shared irq line, or the irq was not handled successfully. Can be used in
80 * conjunction with the irq_handler_entry to understand irq handler latencies.
81 */
82TRACE_EVENT(irq_handler_exit,
83
84 TP_PROTO(int irq, struct irqaction *action, int ret),
85
86 TP_ARGS(irq, action, ret),
87
88 TP_STRUCT__entry(
89 __field( int, irq )
90 __field( int, ret )
91 ),
92
93 TP_fast_assign(
94 __entry->irq = irq;
95 __entry->ret = ret;
96 ),
97
98 TP_printk("irq=%d ret=%s",
99 __entry->irq, __entry->ret ? "handled" : "unhandled")
100);
101
102DECLARE_EVENT_CLASS(softirq,
103
104 TP_PROTO(unsigned int vec_nr),
105
106 TP_ARGS(vec_nr),
107
108 TP_STRUCT__entry(
109 __field( unsigned int, vec )
110 ),
111
112 TP_fast_assign(
113 __entry->vec = vec_nr;
114 ),
115
116 TP_printk("vec=%u [action=%s]", __entry->vec,
117 show_softirq_name(__entry->vec))
118);
119
120/**
121 * softirq_entry - called immediately before the softirq handler
122 * @vec_nr: softirq vector number
123 *
124 * When used in combination with the softirq_exit tracepoint
125 * we can determine the softirq handler routine.
126 */
127DEFINE_EVENT(softirq, softirq_entry,
128
129 TP_PROTO(unsigned int vec_nr),
130
131 TP_ARGS(vec_nr)
132);
133
134/**
135 * softirq_exit - called immediately after the softirq handler returns
136 * @vec_nr: softirq vector number
137 *
138 * When used in combination with the softirq_entry tracepoint
139 * we can determine the softirq handler routine.
140 */
141DEFINE_EVENT(softirq, softirq_exit,
142
143 TP_PROTO(unsigned int vec_nr),
144
145 TP_ARGS(vec_nr)
146);
147
148/**
149 * softirq_raise - called immediately when a softirq is raised
150 * @vec_nr: softirq vector number
151 *
152 * When used in combination with the softirq_entry tracepoint
153 * we can determine the softirq raise to run latency.
154 */
155DEFINE_EVENT(softirq, softirq_raise,
156
157 TP_PROTO(unsigned int vec_nr),
158
159 TP_ARGS(vec_nr)
160);
161
162#endif /* _TRACE_IRQ_H */
163
164/* This part must be outside protection */
165#include <trace/define_trace.h>