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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) |
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 | |
203 | /* This part must be outside protection */ | |
5b88d86e | 204 | #include "../../../probes/define_trace.h" |