Commit | Line | Data |
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0ec73ddc MD |
1 | #undef TRACE_SYSTEM |
2 | #define TRACE_SYSTEM signal | |
3 | ||
3bc29f0a MD |
4 | #if !defined(LTTNG_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ) |
5 | #define LTTNG_TRACE_SIGNAL_H | |
0ec73ddc | 6 | |
3bc29f0a | 7 | #include "../../../probes/lttng-tracepoint-event.h" |
6bd5e64e | 8 | #include <linux/version.h> |
0ec73ddc MD |
9 | |
10 | #ifndef _TRACE_SIGNAL_DEF | |
11 | #define _TRACE_SIGNAL_DEF | |
12 | #include <linux/signal.h> | |
13 | #include <linux/sched.h> | |
f97eaafb | 14 | #undef TP_STORE_SIGINFO |
0ec73ddc MD |
15 | #define TP_STORE_SIGINFO(info) \ |
16 | tp_assign(errno, \ | |
17 | (info == SEND_SIG_NOINFO || info == SEND_SIG_FORCED || info == SEND_SIG_PRIV) ? \ | |
18 | 0 : \ | |
19 | info->si_errno) \ | |
20 | tp_assign(code, \ | |
21 | (info == SEND_SIG_NOINFO || info == SEND_SIG_FORCED) ? \ | |
22 | SI_USER : \ | |
23 | ((info == SEND_SIG_PRIV) ? SI_KERNEL : info->si_code)) | |
24 | #endif /* _TRACE_SIGNAL_DEF */ | |
25 | ||
26 | /** | |
27 | * signal_generate - called when a signal is generated | |
28 | * @sig: signal number | |
29 | * @info: pointer to struct siginfo | |
30 | * @task: pointer to struct task_struct | |
31 | * | |
32 | * Current process sends a 'sig' signal to 'task' process with | |
33 | * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV, | |
34 | * 'info' is not a pointer and you can't access its field. Instead, | |
35 | * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV | |
36 | * means that si_code is SI_KERNEL. | |
37 | */ | |
6bd5e64e | 38 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)) |
3bc29f0a | 39 | LTTNG_TRACEPOINT_EVENT(signal_generate, |
0ec73ddc MD |
40 | |
41 | TP_PROTO(int sig, struct siginfo *info, struct task_struct *task), | |
42 | ||
43 | TP_ARGS(sig, info, task), | |
44 | ||
45 | TP_STRUCT__entry( | |
46 | __field( int, sig ) | |
47 | __field( int, errno ) | |
48 | __field( int, code ) | |
c5ca01c9 | 49 | __array_text( char, comm, TASK_COMM_LEN ) |
0ec73ddc MD |
50 | __field( pid_t, pid ) |
51 | ), | |
52 | ||
53 | TP_fast_assign( | |
54 | tp_assign(sig, sig) | |
55 | TP_STORE_SIGINFO(info) | |
56 | tp_memcpy(comm, task->comm, TASK_COMM_LEN) | |
57 | tp_assign(pid, task->pid) | |
58 | ), | |
59 | ||
60 | TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d", | |
61 | __entry->sig, __entry->errno, __entry->code, | |
62 | __entry->comm, __entry->pid) | |
63 | ) | |
6bd5e64e | 64 | #else |
3bc29f0a | 65 | LTTNG_TRACEPOINT_EVENT(signal_generate, |
6bd5e64e MD |
66 | |
67 | TP_PROTO(int sig, struct siginfo *info, struct task_struct *task, | |
68 | int group, int result), | |
69 | ||
70 | TP_ARGS(sig, info, task, group, result), | |
71 | ||
72 | TP_STRUCT__entry( | |
73 | __field( int, sig ) | |
74 | __field( int, errno ) | |
75 | __field( int, code ) | |
c5ca01c9 | 76 | __array_text( char, comm, TASK_COMM_LEN ) |
6bd5e64e MD |
77 | __field( pid_t, pid ) |
78 | __field( int, group ) | |
79 | __field( int, result ) | |
80 | ), | |
81 | ||
82 | TP_fast_assign( | |
83 | tp_assign(sig, sig) | |
84 | TP_STORE_SIGINFO(info) | |
85 | tp_memcpy(comm, task->comm, TASK_COMM_LEN) | |
86 | tp_assign(pid, task->pid) | |
87 | tp_assign(group, group) | |
88 | tp_assign(result, result) | |
89 | ), | |
90 | ||
91 | TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d", | |
92 | __entry->sig, __entry->errno, __entry->code, | |
93 | __entry->comm, __entry->pid, __entry->group, | |
94 | __entry->result) | |
95 | ) | |
96 | #endif | |
0ec73ddc MD |
97 | |
98 | /** | |
99 | * signal_deliver - called when a signal is delivered | |
100 | * @sig: signal number | |
101 | * @info: pointer to struct siginfo | |
102 | * @ka: pointer to struct k_sigaction | |
103 | * | |
104 | * A 'sig' signal is delivered to current process with 'info' siginfo, | |
105 | * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or | |
106 | * SIG_DFL. | |
107 | * Note that some signals reported by signal_generate tracepoint can be | |
108 | * lost, ignored or modified (by debugger) before hitting this tracepoint. | |
109 | * This means, this can show which signals are actually delivered, but | |
110 | * matching generated signals and delivered signals may not be correct. | |
111 | */ | |
3bc29f0a | 112 | LTTNG_TRACEPOINT_EVENT(signal_deliver, |
0ec73ddc MD |
113 | |
114 | TP_PROTO(int sig, struct siginfo *info, struct k_sigaction *ka), | |
115 | ||
116 | TP_ARGS(sig, info, ka), | |
117 | ||
118 | TP_STRUCT__entry( | |
119 | __field( int, sig ) | |
120 | __field( int, errno ) | |
121 | __field( int, code ) | |
122 | __field( unsigned long, sa_handler ) | |
123 | __field( unsigned long, sa_flags ) | |
124 | ), | |
125 | ||
126 | TP_fast_assign( | |
127 | tp_assign(sig, sig) | |
128 | TP_STORE_SIGINFO(info) | |
129 | tp_assign(sa_handler, (unsigned long)ka->sa.sa_handler) | |
130 | tp_assign(sa_flags, ka->sa.sa_flags) | |
131 | ), | |
132 | ||
133 | TP_printk("sig=%d errno=%d code=%d sa_handler=%lx sa_flags=%lx", | |
134 | __entry->sig, __entry->errno, __entry->code, | |
135 | __entry->sa_handler, __entry->sa_flags) | |
136 | ) | |
137 | ||
7c68b363 | 138 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0)) |
3bc29f0a | 139 | LTTNG_TRACEPOINT_EVENT_CLASS(signal_queue_overflow, |
0ec73ddc MD |
140 | |
141 | TP_PROTO(int sig, int group, struct siginfo *info), | |
142 | ||
143 | TP_ARGS(sig, group, info), | |
144 | ||
145 | TP_STRUCT__entry( | |
146 | __field( int, sig ) | |
147 | __field( int, group ) | |
148 | __field( int, errno ) | |
149 | __field( int, code ) | |
150 | ), | |
151 | ||
152 | TP_fast_assign( | |
153 | tp_assign(sig, sig) | |
154 | tp_assign(group, group) | |
155 | TP_STORE_SIGINFO(info) | |
156 | ), | |
157 | ||
158 | TP_printk("sig=%d group=%d errno=%d code=%d", | |
159 | __entry->sig, __entry->group, __entry->errno, __entry->code) | |
160 | ) | |
161 | ||
162 | /** | |
163 | * signal_overflow_fail - called when signal queue is overflow | |
164 | * @sig: signal number | |
165 | * @group: signal to process group or not (bool) | |
166 | * @info: pointer to struct siginfo | |
167 | * | |
168 | * Kernel fails to generate 'sig' signal with 'info' siginfo, because | |
169 | * siginfo queue is overflow, and the signal is dropped. | |
170 | * 'group' is not 0 if the signal will be sent to a process group. | |
171 | * 'sig' is always one of RT signals. | |
172 | */ | |
3bc29f0a | 173 | LTTNG_TRACEPOINT_EVENT_INSTANCE(signal_queue_overflow, signal_overflow_fail, |
0ec73ddc MD |
174 | |
175 | TP_PROTO(int sig, int group, struct siginfo *info), | |
176 | ||
177 | TP_ARGS(sig, group, info) | |
178 | ) | |
179 | ||
180 | /** | |
181 | * signal_lose_info - called when siginfo is lost | |
182 | * @sig: signal number | |
183 | * @group: signal to process group or not (bool) | |
184 | * @info: pointer to struct siginfo | |
185 | * | |
186 | * Kernel generates 'sig' signal but loses 'info' siginfo, because siginfo | |
187 | * queue is overflow. | |
188 | * 'group' is not 0 if the signal will be sent to a process group. | |
189 | * 'sig' is always one of non-RT signals. | |
190 | */ | |
3bc29f0a | 191 | LTTNG_TRACEPOINT_EVENT_INSTANCE(signal_queue_overflow, signal_lose_info, |
0ec73ddc MD |
192 | |
193 | TP_PROTO(int sig, int group, struct siginfo *info), | |
194 | ||
195 | TP_ARGS(sig, group, info) | |
196 | ) | |
7c68b363 | 197 | #endif |
0ec73ddc | 198 | |
3bc29f0a | 199 | #endif /* LTTNG_TRACE_SIGNAL_H */ |
0ec73ddc MD |
200 | |
201 | /* This part must be outside protection */ | |
202 | #include "../../../probes/define_trace.h" |