Commit | Line | Data |
---|---|---|
d0b6e04a LZ |
1 | #undef TRACE_SYSTEM |
2 | #define TRACE_SYSTEM irq | |
3 | ||
ea20d929 | 4 | #if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ) |
af39241b JB |
5 | #define _TRACE_IRQ_H |
6 | ||
af39241b | 7 | #include <linux/tracepoint.h> |
ea20d929 SR |
8 | #include <linux/interrupt.h> |
9 | ||
1d080d6c | 10 | #define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq } |
5dd4de58 LZ |
11 | #define show_softirq_name(val) \ |
12 | __print_symbolic(val, \ | |
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(BLOCK_IOPOLL), \ | |
19 | softirq_name(TASKLET), \ | |
20 | softirq_name(SCHED), \ | |
21 | softirq_name(HRTIMER), \ | |
1d080d6c | 22 | softirq_name(RCU)) |
c2adae09 | 23 | |
9ee1983c JB |
24 | /** |
25 | * irq_handler_entry - called immediately before the irq action handler | |
26 | * @irq: irq number | |
27 | * @action: pointer to struct irqaction | |
28 | * | |
29 | * The struct irqaction pointed to by @action contains various | |
30 | * information about the handler, including the device name, | |
31 | * @action->name, and the device id, @action->dev_id. When used in | |
32 | * conjunction with the irq_handler_exit tracepoint, we can figure | |
33 | * out irq handler latencies. | |
ea20d929 | 34 | */ |
160031b5 SR |
35 | TRACE_EVENT(irq_handler_entry, |
36 | ||
ea20d929 | 37 | TP_PROTO(int irq, struct irqaction *action), |
160031b5 | 38 | |
ea20d929 | 39 | TP_ARGS(irq, action), |
160031b5 SR |
40 | |
41 | TP_STRUCT__entry( | |
42 | __field( int, irq ) | |
43 | __string( name, action->name ) | |
44 | ), | |
45 | ||
46 | TP_fast_assign( | |
47 | __entry->irq = irq; | |
48 | __assign_str(name, action->name); | |
49 | ), | |
50 | ||
434a83c3 | 51 | TP_printk("irq=%d name=%s", __entry->irq, __get_str(name)) |
160031b5 | 52 | ); |
ea20d929 | 53 | |
9ee1983c JB |
54 | /** |
55 | * irq_handler_exit - called immediately after the irq action handler returns | |
56 | * @irq: irq number | |
57 | * @action: pointer to struct irqaction | |
58 | * @ret: return value | |
59 | * | |
60 | * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding | |
61 | * @action->handler scuccessully handled this irq. Otherwise, the irq might be | |
62 | * a shared irq line, or the irq was not handled successfully. Can be used in | |
63 | * conjunction with the irq_handler_entry to understand irq handler latencies. | |
ea20d929 SR |
64 | */ |
65 | TRACE_EVENT(irq_handler_exit, | |
66 | ||
67 | TP_PROTO(int irq, struct irqaction *action, int ret), | |
68 | ||
69 | TP_ARGS(irq, action, ret), | |
70 | ||
71 | TP_STRUCT__entry( | |
72 | __field( int, irq ) | |
73 | __field( int, ret ) | |
74 | ), | |
75 | ||
76 | TP_fast_assign( | |
77 | __entry->irq = irq; | |
78 | __entry->ret = ret; | |
79 | ), | |
80 | ||
434a83c3 | 81 | TP_printk("irq=%d ret=%s", |
ea20d929 SR |
82 | __entry->irq, __entry->ret ? "handled" : "unhandled") |
83 | ); | |
84 | ||
c467307c | 85 | DECLARE_EVENT_CLASS(softirq, |
160031b5 | 86 | |
ea20d929 | 87 | TP_PROTO(struct softirq_action *h, struct softirq_action *vec), |
160031b5 | 88 | |
ea20d929 | 89 | TP_ARGS(h, vec), |
af39241b | 90 | |
160031b5 SR |
91 | TP_STRUCT__entry( |
92 | __field( int, vec ) | |
160031b5 SR |
93 | ), |
94 | ||
95 | TP_fast_assign( | |
96 | __entry->vec = (int)(h - vec); | |
160031b5 SR |
97 | ), |
98 | ||
434a83c3 | 99 | TP_printk("vec=%d [action=%s]", __entry->vec, |
c2adae09 | 100 | show_softirq_name(__entry->vec)) |
160031b5 SR |
101 | ); |
102 | ||
c467307c LZ |
103 | /** |
104 | * softirq_entry - called immediately before the softirq handler | |
105 | * @h: pointer to struct softirq_action | |
106 | * @vec: pointer to first struct softirq_action in softirq_vec array | |
107 | * | |
108 | * The @h parameter, contains a pointer to the struct softirq_action | |
109 | * which has a pointer to the action handler that is called. By subtracting | |
110 | * the @vec pointer from the @h pointer, we can determine the softirq | |
111 | * number. Also, when used in combination with the softirq_exit tracepoint | |
112 | * we can determine the softirq latency. | |
113 | */ | |
114 | DEFINE_EVENT(softirq, softirq_entry, | |
115 | ||
116 | TP_PROTO(struct softirq_action *h, struct softirq_action *vec), | |
117 | ||
118 | TP_ARGS(h, vec) | |
119 | ); | |
120 | ||
9ee1983c JB |
121 | /** |
122 | * softirq_exit - called immediately after the softirq handler returns | |
123 | * @h: pointer to struct softirq_action | |
124 | * @vec: pointer to first struct softirq_action in softirq_vec array | |
125 | * | |
126 | * The @h parameter contains a pointer to the struct softirq_action | |
127 | * that has handled the softirq. By subtracting the @vec pointer from | |
128 | * the @h pointer, we can determine the softirq number. Also, when used in | |
129 | * combination with the softirq_entry tracepoint we can determine the softirq | |
130 | * latency. | |
131 | */ | |
c467307c | 132 | DEFINE_EVENT(softirq, softirq_exit, |
160031b5 | 133 | |
ea20d929 | 134 | TP_PROTO(struct softirq_action *h, struct softirq_action *vec), |
160031b5 | 135 | |
c467307c | 136 | TP_ARGS(h, vec) |
160031b5 | 137 | ); |
af39241b | 138 | |
a8d154b0 SR |
139 | #endif /* _TRACE_IRQ_H */ |
140 | ||
141 | /* This part must be outside protection */ | |
142 | #include <trace/define_trace.h> |