2 #define TRACE_SYSTEM irq
4 #if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/tracepoint.h>
9 #ifndef _TRACE_IRQ_DEF_
10 #define _TRACE_IRQ_DEF_
13 struct softirq_action;
15 #define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
16 #define show_softirq_name(val) \
17 __print_symbolic(val, \
19 softirq_name(TIMER), \
20 softirq_name(NET_TX), \
21 softirq_name(NET_RX), \
22 softirq_name(BLOCK), \
23 softirq_name(BLOCK_IOPOLL), \
24 softirq_name(TASKLET), \
25 softirq_name(SCHED), \
26 softirq_name(HRTIMER), \
29 #endif /* _TRACE_IRQ_DEF_ */
32 * irq_handler_entry - called immediately before the irq action handler
34 * @action: pointer to struct irqaction
36 * The struct irqaction pointed to by @action contains various
37 * information about the handler, including the device name,
38 * @action->name, and the device id, @action->dev_id. When used in
39 * conjunction with the irq_handler_exit tracepoint, we can figure
40 * out irq handler latencies.
42 TRACE_EVENT(irq_handler_entry,
44 TP_PROTO(int irq, struct irqaction *action),
50 __string( name, action->name )
55 tp_strcpy(name, action->name)
58 TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
62 * irq_handler_exit - called immediately after the irq action handler returns
64 * @action: pointer to struct irqaction
67 * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
68 * @action->handler scuccessully handled this irq. Otherwise, the irq might be
69 * a shared irq line, or the irq was not handled successfully. Can be used in
70 * conjunction with the irq_handler_entry to understand irq handler latencies.
72 TRACE_EVENT(irq_handler_exit,
74 TP_PROTO(int irq, struct irqaction *action, int ret),
76 TP_ARGS(irq, action, ret),
88 TP_printk("irq=%d ret=%s",
89 __entry->irq, __entry->ret ? "handled" : "unhandled")
92 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
93 DECLARE_EVENT_CLASS(softirq,
95 TP_PROTO(unsigned int vec_nr),
100 __field( unsigned int, vec )
104 tp_assign(vec, vec_nr)
107 TP_printk("vec=%u [action=%s]", __entry->vec,
108 show_softirq_name(__entry->vec))
112 * softirq_entry - called immediately before the softirq handler
113 * @vec_nr: softirq vector number
115 * When used in combination with the softirq_exit tracepoint
116 * we can determine the softirq handler runtine.
118 DEFINE_EVENT(softirq, softirq_entry,
120 TP_PROTO(unsigned int vec_nr),
126 * softirq_exit - called immediately after the softirq handler returns
127 * @vec_nr: softirq vector number
129 * When used in combination with the softirq_entry tracepoint
130 * we can determine the softirq handler runtine.
132 DEFINE_EVENT(softirq, softirq_exit,
134 TP_PROTO(unsigned int vec_nr),
140 * softirq_raise - called immediately when a softirq is raised
141 * @vec_nr: softirq vector number
143 * When used in combination with the softirq_entry tracepoint
144 * we can determine the softirq raise to run latency.
146 DEFINE_EVENT(softirq, softirq_raise,
148 TP_PROTO(unsigned int vec_nr),
152 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
153 DECLARE_EVENT_CLASS(softirq,
155 TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
160 __field( unsigned int, vec )
164 tp_assign(vec, (int)(h - vec))
167 TP_printk("vec=%u [action=%s]", __entry->vec,
168 show_softirq_name(__entry->vec))
172 * softirq_entry - called immediately before the softirq handler
173 * @h: pointer to struct softirq_action
174 * @vec: pointer to first struct softirq_action in softirq_vec array
176 * When used in combination with the softirq_exit tracepoint
177 * we can determine the softirq handler runtine.
179 DEFINE_EVENT(softirq, softirq_entry,
181 TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
187 * softirq_exit - called immediately after the softirq handler returns
188 * @h: pointer to struct softirq_action
189 * @vec: pointer to first struct softirq_action in softirq_vec array
191 * When used in combination with the softirq_entry tracepoint
192 * we can determine the softirq handler runtine.
194 DEFINE_EVENT(softirq, softirq_exit,
196 TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
202 * softirq_raise - called immediately when a softirq is raised
203 * @h: pointer to struct softirq_action
204 * @vec: pointer to first struct softirq_action in softirq_vec array
206 * When used in combination with the softirq_entry tracepoint
207 * we can determine the softirq raise to run latency.
209 DEFINE_EVENT(softirq, softirq_raise,
211 TP_PROTO(struct softirq_action *h, struct softirq_action *vec),
215 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) */
217 #endif /* _TRACE_IRQ_H */
219 /* This part must be outside protection */
220 #include "../../../probes/define_trace.h"