^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #undef TRACE_SYSTEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define TRACE_SYSTEM signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define _TRACE_SIGNAL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/tracepoint.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define TP_STORE_SIGINFO(__entry, info) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) if (info == SEND_SIG_NOINFO) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) __entry->errno = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) __entry->code = SI_USER; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) } else if (info == SEND_SIG_PRIV) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) __entry->errno = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) __entry->code = SI_KERNEL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) } else { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) __entry->errno = info->si_errno; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) __entry->code = info->si_code; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #ifndef TRACE_HEADER_MULTI_READ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) TRACE_SIGNAL_DELIVERED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) TRACE_SIGNAL_IGNORED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) TRACE_SIGNAL_ALREADY_PENDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) TRACE_SIGNAL_OVERFLOW_FAIL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) TRACE_SIGNAL_LOSE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * signal_generate - called when a signal is generated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * @sig: signal number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * @info: pointer to struct siginfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * @task: pointer to struct task_struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * @group: shared or private
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @result: TRACE_SIGNAL_*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * Current process sends a 'sig' signal to 'task' process with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * 'info' is not a pointer and you can't access its field. Instead,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * means that si_code is SI_KERNEL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) TRACE_EVENT(signal_generate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) TP_PROTO(int sig, struct kernel_siginfo *info, struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int group, int result),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) TP_ARGS(sig, info, task, group, result),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) TP_STRUCT__entry(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) __field( int, sig )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) __field( int, errno )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) __field( int, code )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) __array( char, comm, TASK_COMM_LEN )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) __field( pid_t, pid )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) __field( int, group )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) __field( int, result )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) TP_fast_assign(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) __entry->sig = sig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) TP_STORE_SIGINFO(__entry, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) __entry->pid = task->pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) __entry->group = group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) __entry->result = result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) __entry->sig, __entry->errno, __entry->code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) __entry->comm, __entry->pid, __entry->group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) __entry->result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * signal_deliver - called when a signal is delivered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * @sig: signal number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @info: pointer to struct siginfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @ka: pointer to struct k_sigaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * A 'sig' signal is delivered to current process with 'info' siginfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * SIG_DFL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * Note that some signals reported by signal_generate tracepoint can be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * lost, ignored or modified (by debugger) before hitting this tracepoint.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * This means, this can show which signals are actually delivered, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * matching generated signals and delivered signals may not be correct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) TRACE_EVENT(signal_deliver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) TP_PROTO(int sig, struct kernel_siginfo *info, struct k_sigaction *ka),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) TP_ARGS(sig, info, ka),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) TP_STRUCT__entry(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) __field( int, sig )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) __field( int, errno )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) __field( int, code )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) __field( unsigned long, sa_handler )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) __field( unsigned long, sa_flags )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) TP_fast_assign(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) __entry->sig = sig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) TP_STORE_SIGINFO(__entry, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) __entry->sa_handler = (unsigned long)ka->sa.sa_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) __entry->sa_flags = ka->sa.sa_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) TP_printk("sig=%d errno=%d code=%d sa_handler=%lx sa_flags=%lx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) __entry->sig, __entry->errno, __entry->code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) __entry->sa_handler, __entry->sa_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #endif /* _TRACE_SIGNAL_H */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* This part must be outside protection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) #include <trace/define_trace.h>
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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