Commit | Line | Data |
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d1eb650f MH |
1 | #undef TRACE_SYSTEM |
2 | #define TRACE_SYSTEM signal | |
3 | ||
4 | #if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ) | |
5 | #define _TRACE_SIGNAL_H | |
6 | ||
7 | #include <linux/signal.h> | |
8 | #include <linux/sched.h> | |
9 | #include <linux/tracepoint.h> | |
10 | ||
11 | #define TP_STORE_SIGINFO(__entry, info) \ | |
12 | do { \ | |
b9b76dfa ON |
13 | if (info == SEND_SIG_NOINFO || \ |
14 | info == SEND_SIG_FORCED) { \ | |
d1eb650f MH |
15 | __entry->errno = 0; \ |
16 | __entry->code = SI_USER; \ | |
17 | } else if (info == SEND_SIG_PRIV) { \ | |
18 | __entry->errno = 0; \ | |
19 | __entry->code = SI_KERNEL; \ | |
20 | } else { \ | |
21 | __entry->errno = info->si_errno; \ | |
22 | __entry->code = info->si_code; \ | |
23 | } \ | |
24 | } while (0) | |
25 | ||
6c303d3a ON |
26 | #ifndef TRACE_HEADER_MULTI_READ |
27 | enum { | |
28 | TRACE_SIGNAL_DELIVERED, | |
29 | TRACE_SIGNAL_IGNORED, | |
30 | TRACE_SIGNAL_ALREADY_PENDING, | |
31 | TRACE_SIGNAL_OVERFLOW_FAIL, | |
32 | TRACE_SIGNAL_LOSE_INFO, | |
33 | }; | |
34 | #endif | |
35 | ||
d1eb650f MH |
36 | /** |
37 | * signal_generate - called when a signal is generated | |
38 | * @sig: signal number | |
39 | * @info: pointer to struct siginfo | |
40 | * @task: pointer to struct task_struct | |
6c303d3a ON |
41 | * @group: shared or private |
42 | * @result: TRACE_SIGNAL_* | |
d1eb650f MH |
43 | * |
44 | * Current process sends a 'sig' signal to 'task' process with | |
45 | * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV, | |
46 | * 'info' is not a pointer and you can't access its field. Instead, | |
47 | * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV | |
48 | * means that si_code is SI_KERNEL. | |
49 | */ | |
50 | TRACE_EVENT(signal_generate, | |
51 | ||
6c303d3a ON |
52 | TP_PROTO(int sig, struct siginfo *info, struct task_struct *task, |
53 | int group, int result), | |
d1eb650f | 54 | |
6c303d3a | 55 | TP_ARGS(sig, info, task, group, result), |
d1eb650f MH |
56 | |
57 | TP_STRUCT__entry( | |
58 | __field( int, sig ) | |
59 | __field( int, errno ) | |
60 | __field( int, code ) | |
61 | __array( char, comm, TASK_COMM_LEN ) | |
62 | __field( pid_t, pid ) | |
6c303d3a ON |
63 | __field( int, group ) |
64 | __field( int, result ) | |
d1eb650f MH |
65 | ), |
66 | ||
67 | TP_fast_assign( | |
68 | __entry->sig = sig; | |
69 | TP_STORE_SIGINFO(__entry, info); | |
70 | memcpy(__entry->comm, task->comm, TASK_COMM_LEN); | |
71 | __entry->pid = task->pid; | |
6c303d3a ON |
72 | __entry->group = group; |
73 | __entry->result = result; | |
d1eb650f MH |
74 | ), |
75 | ||
6c303d3a | 76 | TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d", |
d1eb650f | 77 | __entry->sig, __entry->errno, __entry->code, |
6c303d3a ON |
78 | __entry->comm, __entry->pid, __entry->group, |
79 | __entry->result) | |
d1eb650f MH |
80 | ); |
81 | ||
f9d4257e MH |
82 | /** |
83 | * signal_deliver - called when a signal is delivered | |
84 | * @sig: signal number | |
85 | * @info: pointer to struct siginfo | |
86 | * @ka: pointer to struct k_sigaction | |
87 | * | |
88 | * A 'sig' signal is delivered to current process with 'info' siginfo, | |
89 | * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or | |
90 | * SIG_DFL. | |
91 | * Note that some signals reported by signal_generate tracepoint can be | |
92 | * lost, ignored or modified (by debugger) before hitting this tracepoint. | |
93 | * This means, this can show which signals are actually delivered, but | |
94 | * matching generated signals and delivered signals may not be correct. | |
95 | */ | |
96 | TRACE_EVENT(signal_deliver, | |
97 | ||
98 | TP_PROTO(int sig, struct siginfo *info, struct k_sigaction *ka), | |
99 | ||
100 | TP_ARGS(sig, info, ka), | |
101 | ||
102 | TP_STRUCT__entry( | |
103 | __field( int, sig ) | |
104 | __field( int, errno ) | |
105 | __field( int, code ) | |
106 | __field( unsigned long, sa_handler ) | |
107 | __field( unsigned long, sa_flags ) | |
108 | ), | |
109 | ||
110 | TP_fast_assign( | |
111 | __entry->sig = sig; | |
112 | TP_STORE_SIGINFO(__entry, info); | |
113 | __entry->sa_handler = (unsigned long)ka->sa.sa_handler; | |
114 | __entry->sa_flags = ka->sa.sa_flags; | |
115 | ), | |
116 | ||
117 | TP_printk("sig=%d errno=%d code=%d sa_handler=%lx sa_flags=%lx", | |
118 | __entry->sig, __entry->errno, __entry->code, | |
119 | __entry->sa_handler, __entry->sa_flags) | |
120 | ); | |
ba005e1f | 121 | |
d1eb650f MH |
122 | #endif /* _TRACE_SIGNAL_H */ |
123 | ||
124 | /* This part must be outside protection */ | |
125 | #include <trace/define_trace.h> |