projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| b7cdc182 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 0ec73ddc MD |
2 | #undef TRACE_SYSTEM |
| 3 | #define TRACE_SYSTEM signal | |
| 4 | ||
| 3bc29f0a MD |
5 | #if !defined(LTTNG_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ) |
| 6 | #define LTTNG_TRACE_SIGNAL_H | |
| 0ec73ddc | 7 | |
| 6ec43db8 | 8 | #include <probes/lttng-tracepoint-event.h> |
| 0ec73ddc MD |
9 | |
| 10 | #ifndef _TRACE_SIGNAL_DEF | |
| 11 | #define _TRACE_SIGNAL_DEF | |
| 12 | #include <linux/signal.h> | |
| 13 | #include <linux/sched.h> | |
| f127e61e | 14 | #undef LTTNG_FIELDS_SIGINFO |
| cef5d79e MJ |
15 | #define LTTNG_FIELDS_SIGINFO(info) \ |
| 16 | ctf_integer(int, errno, \ | |
| 17 | (info == SEND_SIG_NOINFO || info == SEND_SIG_PRIV) ? \ | |
| 18 | 0 : \ | |
| 19 | info->si_errno) \ | |
| 20 | ctf_integer(int, code, \ | |
| 21 | (info == SEND_SIG_NOINFO) ? \ | |
| 22 | SI_USER : \ | |
| 23 | ((info == SEND_SIG_PRIV) ? SI_KERNEL : info->si_code)) | |
| 0ec73ddc MD |
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 | */ | |
| 3bc29f0a | 38 | LTTNG_TRACEPOINT_EVENT(signal_generate, |
| 0ec73ddc | 39 | |
| b90a7f30 MJ |
40 | TP_PROTO(int sig, struct kernel_siginfo *info, struct task_struct *task, |
| 41 | int group, int result), | |
| 0ec73ddc | 42 | |
| b90a7f30 | 43 | TP_ARGS(sig, info, task, group, result), |
| 0ec73ddc | 44 | |
| f127e61e MD |
45 | TP_FIELDS( |
| 46 | ctf_integer(int, sig, sig) | |
| 47 | LTTNG_FIELDS_SIGINFO(info) | |
| 48 | ctf_array_text(char, comm, task->comm, TASK_COMM_LEN) | |
| 49 | ctf_integer(pid_t, pid, task->pid) | |
| b90a7f30 MJ |
50 | ctf_integer(int, group, group) |
| 51 | ctf_integer(int, result, result) | |
| f127e61e | 52 | ) |
| 0ec73ddc MD |
53 | ) |
| 54 | ||
| 55 | /** | |
| 56 | * signal_deliver - called when a signal is delivered | |
| 57 | * @sig: signal number | |
| 58 | * @info: pointer to struct siginfo | |
| 59 | * @ka: pointer to struct k_sigaction | |
| 60 | * | |
| 61 | * A 'sig' signal is delivered to current process with 'info' siginfo, | |
| 62 | * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or | |
| 63 | * SIG_DFL. | |
| 64 | * Note that some signals reported by signal_generate tracepoint can be | |
| 65 | * lost, ignored or modified (by debugger) before hitting this tracepoint. | |
| 66 | * This means, this can show which signals are actually delivered, but | |
| 67 | * matching generated signals and delivered signals may not be correct. | |
| 68 | */ | |
| b90a7f30 MJ |
69 | LTTNG_TRACEPOINT_EVENT(signal_deliver, |
| 70 | ||
| 71 | TP_PROTO(int sig, struct kernel_siginfo *info, struct k_sigaction *ka), | |
| 72 | ||
| 73 | TP_ARGS(sig, info, ka), | |
| 74 | ||
| 75 | TP_FIELDS( | |
| 76 | ctf_integer(int, sig, sig) | |
| 77 | LTTNG_FIELDS_SIGINFO(info) | |
| 78 | ctf_integer(unsigned long, sa_handler, (unsigned long) ka->sa.sa_handler) | |
| 79 | ctf_integer(unsigned long, sa_flags, ka->sa.sa_flags) | |
| 80 | ) | |
| 81 | ) | |
| 0ec73ddc | 82 | |
| 3bc29f0a | 83 | #endif /* LTTNG_TRACE_SIGNAL_H */ |
| 0ec73ddc MD |
84 | |
| 85 | /* This part must be outside protection */ | |
| 6ec43db8 | 86 | #include <probes/define_trace.h> |