2 #define TRACE_SYSTEM irq
4 #if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/tracepoint.h>
10 struct softirq_action;
12 #define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
13 #define show_softirq_name(val) \
14 __print_symbolic(val, \
16 softirq_name(TIMER), \
17 softirq_name(NET_TX), \
18 softirq_name(NET_RX), \
19 softirq_name(BLOCK), \
20 softirq_name(BLOCK_IOPOLL), \
21 softirq_name(TASKLET), \
22 softirq_name(SCHED), \
23 softirq_name(HRTIMER), \
27 * irq_handler_entry - called immediately before the irq action handler
29 * @action: pointer to struct irqaction
31 * The struct irqaction pointed to by @action contains various
32 * information about the handler, including the device name,
33 * @action->name, and the device id, @action->dev_id. When used in
34 * conjunction with the irq_handler_exit tracepoint, we can figure
35 * out irq handler latencies.
37 TRACE_EVENT(irq_handler_entry,
39 TP_PROTO(int irq, struct irqaction *action),
45 __string( name, action->name )
50 __assign_str(name, action->name);
53 TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
57 * irq_handler_exit - called immediately after the irq action handler returns
59 * @action: pointer to struct irqaction
62 * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
63 * @action->handler scuccessully handled this irq. Otherwise, the irq might be
64 * a shared irq line, or the irq was not handled successfully. Can be used in
65 * conjunction with the irq_handler_entry to understand irq handler latencies.
67 TRACE_EVENT(irq_handler_exit,
69 TP_PROTO(int irq, struct irqaction *action, int ret),
71 TP_ARGS(irq, action, ret),
83 TP_printk("irq=%d ret=%s",
84 __entry->irq, __entry->ret ? "handled" : "unhandled")
87 DECLARE_EVENT_CLASS(softirq,
89 TP_PROTO(unsigned int vec_nr),
94 __field( unsigned int, vec )
98 __entry->vec = vec_nr;
101 TP_printk("vec=%u [action=%s]", __entry->vec,
102 show_softirq_name(__entry->vec))
106 * softirq_entry - called immediately before the softirq handler
107 * @vec_nr: softirq vector number
109 * When used in combination with the softirq_exit tracepoint
110 * we can determine the softirq handler runtine.
112 DEFINE_EVENT(softirq, softirq_entry,
114 TP_PROTO(unsigned int vec_nr),
120 * softirq_exit - called immediately after the softirq handler returns
121 * @vec_nr: softirq vector number
123 * When used in combination with the softirq_entry tracepoint
124 * we can determine the softirq handler runtine.
126 DEFINE_EVENT(softirq, softirq_exit,
128 TP_PROTO(unsigned int vec_nr),
134 * softirq_raise - called immediately when a softirq is raised
135 * @vec_nr: softirq vector number
137 * When used in combination with the softirq_entry tracepoint
138 * we can determine the softirq raise to run latency.
140 DEFINE_EVENT(softirq, softirq_raise,
142 TP_PROTO(unsigned int vec_nr),
147 #endif /* _TRACE_IRQ_H */
149 /* This part must be outside protection */
150 #include <trace/define_trace.h>