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
163DECLARE_EVENT_CLASS(tasklet,
164
165	TP_PROTO(struct tasklet_struct *t, void *func),
166
167	TP_ARGS(t, func),
168
169	TP_STRUCT__entry(
170		__field(	void *,	tasklet)
171		__field(	void *,	func)
172	),
173
174	TP_fast_assign(
175		__entry->tasklet = t;
176		__entry->func = func;
177	),
178
179	TP_printk("tasklet=%ps function=%ps", __entry->tasklet, __entry->func)
180);
181
182/**
183 * tasklet_entry - called immediately before the tasklet is run
184 * @t: tasklet pointer
185 * @func: tasklet callback or function being run
186 *
187 * Used to find individual tasklet execution time
188 */
189DEFINE_EVENT(tasklet, tasklet_entry,
190
191	TP_PROTO(struct tasklet_struct *t, void *func),
192
193	TP_ARGS(t, func)
194);
195
196/**
197 * tasklet_exit - called immediately after the tasklet is run
198 * @t: tasklet pointer
199 * @func: tasklet callback or function being run
200 *
201 * Used to find individual tasklet execution time
202 */
203DEFINE_EVENT(tasklet, tasklet_exit,
204
205	TP_PROTO(struct tasklet_struct *t, void *func),
206
207	TP_ARGS(t, func)
208);
209
210#endif /*  _TRACE_IRQ_H */
211
212/* This part must be outside protection */
213#include <trace/define_trace.h>
214