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       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 {                                                    \
      13                 :            :                 if (info == SEND_SIG_NOINFO ||                  \
      14                 :            :                     info == SEND_SIG_FORCED) {                  \
      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                 :            : 
      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                 :            : 
      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
      41                 :            :  * @group: shared or private
      42                 :            :  * @result: TRACE_SIGNAL_*
      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   [ #  #  #  # ]:   11148118 : TRACE_EVENT(signal_generate,
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      51                 :            : 
      52                 :            :         TP_PROTO(int sig, struct siginfo *info, struct task_struct *task,
      53                 :            :                         int group, int result),
      54                 :            : 
      55                 :            :         TP_ARGS(sig, info, task, group, result),
      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                     )
      63                 :            :                 __field(        int,    group                   )
      64                 :            :                 __field(        int,    result                  )
      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;
      72                 :            :                 __entry->group       = group;
      73                 :            :                 __entry->result      = result;
      74                 :            :         ),
      75                 :            : 
      76                 :            :         TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d",
      77                 :            :                   __entry->sig, __entry->errno, __entry->code,
      78                 :            :                   __entry->comm, __entry->pid, __entry->group,
      79                 :            :                   __entry->result)
      80                 :            : );
      81                 :            : 
      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   [ -  +  #  # ]:    1324256 : TRACE_EVENT(signal_deliver,
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      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                 :            : );
     121                 :            : 
     122                 :            : #endif /* _TRACE_SIGNAL_H */
     123                 :            : 
     124                 :            : /* This part must be outside protection */
     125                 :            : #include <trace/define_trace.h>