67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM signal
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#if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_SIGNAL_H
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/tracepoint.h>
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#define TP_STORE_SIGINFO(__entry, info) \
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do { \
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if (info == SEND_SIG_NOINFO) { \
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__entry->errno = 0; \
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__entry->code = SI_USER; \
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} else if (info == SEND_SIG_PRIV) { \
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__entry->errno = 0; \
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__entry->code = SI_KERNEL; \
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} else { \
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__entry->errno = info->si_errno; \
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__entry->code = info->si_code; \
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} \
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} while (0)
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/**
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* signal_generate - called when a signal is generated
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* @sig: signal number
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* @info: pointer to struct siginfo
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* @task: pointer to struct task_struct
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*
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* Current process sends a 'sig' signal to 'task' process with
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* 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV,
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* 'info' is not a pointer and you can't access its field. Instead,
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* SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV
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* means that si_code is SI_KERNEL.
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*/
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TRACE_EVENT(signal_generate,
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TP_PROTO(int sig, struct siginfo *info, struct task_struct *task),
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TP_ARGS(sig, info, task),
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TP_STRUCT__entry(
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__field( int, sig )
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__field( int, errno )
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__field( int, code )
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__array( char, comm, TASK_COMM_LEN )
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__field( pid_t, pid )
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),
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TP_fast_assign(
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__entry->sig = sig;
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TP_STORE_SIGINFO(__entry, info);
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memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
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__entry->pid = task->pid;
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),
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TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d",
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__entry->sig, __entry->errno, __entry->code,
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__entry->comm, __entry->pid)
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);
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#endif /* _TRACE_SIGNAL_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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