LTTng » LTTng-tools

Listing a session's kernel events after enabling a syscall does not produce the same output before/after tracing is started.

Before start

$ lttng create test
Session test created.
Traces will be written in /home/jgalar/lttng-traces/test-20150929-124236
$ lttng enable-event --kernel --syscall --all
All Kernel system calls are enabled in channel channel0
$ lttng list test
Tracing session test: [inactive]
    Trace path: /home/jgalar/lttng-traces/test-20150929-124236

=== Domain: Kernel ===

Channels:
-------------
- channel0: [enabled]

    Attributes:
      overwrite mode: 0
      subbufers size: 262144
      number of subbufers: 4
      switch timer interval: 0
      read timer interval: 200000
      trace file count: 0
      trace file size (bytes): 0
      output: splice()

    Events:
      * (type:syscall) [enabled]

After start

$ lttng start
Tracing started for session test
$ lttng list test
Tracing session test: [active]
    Trace path: /home/jgalar/lttng-traces/test-20150929-124236

=== Domain: Kernel ===

Channels:
-------------
- channel0: [enabled]

    Attributes:
      overwrite mode: 0
      subbufers size: 262144
      number of subbufers: 4
      switch timer interval: 0
      read timer interval: 200000
      trace file count: 0
      trace file size (bytes): 0
      output: splice()

    Events:
      * (type:syscall) [enabled]
      read (type:syscall) [enabled] [32/64-bit]
      write (type:syscall) [enabled] [32/64-bit]
      open (type:syscall) [enabled] [32/64-bit]
      close (type:syscall) [enabled] [32/64-bit]
      newstat (type:syscall) [enabled] [32/64-bit]
      newfstat (type:syscall) [enabled] [32/64-bit]
      newlstat (type:syscall) [enabled] [32/64-bit]
      poll (type:syscall) [enabled] [32/64-bit]
      lseek (type:syscall) [enabled] [32/64-bit]
      mmap (type:syscall) [enabled] [64-bit]
      mprotect (type:syscall) [enabled] [32/64-bit]
      munmap (type:syscall) [enabled] [32/64-bit]
      brk (type:syscall) [enabled] [32/64-bit]
      rt_sigaction (type:syscall) [enabled] [32/64-bit]
      rt_sigprocmask (type:syscall) [enabled] [32/64-bit]
      ioctl (type:syscall) [enabled] [32/64-bit]
      pread64 (type:syscall) [enabled] [64-bit]
      pwrite64 (type:syscall) [enabled] [64-bit]
      readv (type:syscall) [enabled] [32/64-bit]
      writev (type:syscall) [enabled] [32/64-bit]
      access (type:syscall) [enabled] [32/64-bit]
      pipe (type:syscall) [enabled] [32/64-bit]
      select (type:syscall) [enabled] [32/64-bit]
      sched_yield (type:syscall) [enabled] [32/64-bit]
      mremap (type:syscall) [enabled] [32/64-bit]
      msync (type:syscall) [enabled] [32/64-bit]
      mincore (type:syscall) [enabled] [32/64-bit]
      madvise (type:syscall) [enabled] [32/64-bit]
      shmget (type:syscall) [enabled] [64-bit]
      shmat (type:syscall) [enabled] [64-bit]
      shmctl (type:syscall) [enabled] [64-bit]
      dup (type:syscall) [enabled] [32/64-bit]
      dup2 (type:syscall) [enabled] [32/64-bit]
      pause (type:syscall) [enabled] [32/64-bit]
      nanosleep (type:syscall) [enabled] [32/64-bit]
      getitimer (type:syscall) [enabled] [32/64-bit]
      alarm (type:syscall) [enabled] [32/64-bit]
      setitimer (type:syscall) [enabled] [32/64-bit]
      getpid (type:syscall) [enabled] [32/64-bit]
      sendfile64 (type:syscall) [enabled] [32/64-bit]
      socket (type:syscall) [enabled] [64-bit]
      connect (type:syscall) [enabled] [64-bit]
      accept (type:syscall) [enabled] [64-bit]
      sendto (type:syscall) [enabled] [64-bit]
      recvfrom (type:syscall) [enabled] [64-bit]
      sendmsg (type:syscall) [enabled] [64-bit]
      recvmsg (type:syscall) [enabled] [64-bit]
      shutdown (type:syscall) [enabled] [64-bit]
      bind (type:syscall) [enabled] [64-bit]
      listen (type:syscall) [enabled] [64-bit]
      getsockname (type:syscall) [enabled] [64-bit]
      getpeername (type:syscall) [enabled] [64-bit]
      socketpair (type:syscall) [enabled] [64-bit]
      setsockopt (type:syscall) [enabled] [64-bit]
      getsockopt (type:syscall) [enabled] [64-bit]
      clone (type:syscall) [enabled] [32/64-bit]
      execve (type:syscall) [enabled] [32/64-bit]
      exit (type:syscall) [enabled] [32/64-bit]
      wait4 (type:syscall) [enabled] [32/64-bit]
      kill (type:syscall) [enabled] [32/64-bit]
      newuname (type:syscall) [enabled] [32/64-bit]
      semget (type:syscall) [enabled] [64-bit]
      semop (type:syscall) [enabled] [64-bit]
      semctl (type:syscall) [enabled] [64-bit]
      shmdt (type:syscall) [enabled] [64-bit]
      msgget (type:syscall) [enabled] [64-bit]
      msgsnd (type:syscall) [enabled] [64-bit]
      msgrcv (type:syscall) [enabled] [64-bit]
      msgctl (type:syscall) [enabled] [64-bit]
      fcntl (type:syscall) [enabled] [32/64-bit]
      flock (type:syscall) [enabled] [32/64-bit]
      fsync (type:syscall) [enabled] [32/64-bit]
      fdatasync (type:syscall) [enabled] [32/64-bit]
      truncate (type:syscall) [enabled] [32/64-bit]
      ftruncate (type:syscall) [enabled] [32/64-bit]
      getdents (type:syscall) [enabled] [32/64-bit]
      getcwd (type:syscall) [enabled] [32/64-bit]
      chdir (type:syscall) [enabled] [32/64-bit]
      fchdir (type:syscall) [enabled] [32/64-bit]
      rename (type:syscall) [enabled] [32/64-bit]
      mkdir (type:syscall) [enabled] [32/64-bit]
      rmdir (type:syscall) [enabled] [32/64-bit]
      creat (type:syscall) [enabled] [32/64-bit]
      link (type:syscall) [enabled] [32/64-bit]
      unlink (type:syscall) [enabled] [32/64-bit]
      symlink (type:syscall) [enabled] [32/64-bit]
      readlink (type:syscall) [enabled] [32/64-bit]
      chmod (type:syscall) [enabled] [32/64-bit]
      fchmod (type:syscall) [enabled] [32/64-bit]
      chown (type:syscall) [enabled] [32/64-bit]
      fchown (type:syscall) [enabled] [32/64-bit]
      lchown (type:syscall) [enabled] [32/64-bit]
      umask (type:syscall) [enabled] [32/64-bit]
      gettimeofday (type:syscall) [enabled] [32/64-bit]
      getrlimit (type:syscall) [enabled] [32/64-bit]
      getrusage (type:syscall) [enabled] [32/64-bit]
      sysinfo (type:syscall) [enabled] [32/64-bit]
      times (type:syscall) [enabled] [32/64-bit]
      ptrace (type:syscall) [enabled] [32/64-bit]
      getuid (type:syscall) [enabled] [32/64-bit]
      syslog (type:syscall) [enabled] [32/64-bit]
      getgid (type:syscall) [enabled] [32/64-bit]
      setuid (type:syscall) [enabled] [32/64-bit]
      setgid (type:syscall) [enabled] [32/64-bit]
      geteuid (type:syscall) [enabled] [32/64-bit]
      getegid (type:syscall) [enabled] [32/64-bit]
      setpgid (type:syscall) [enabled] [32/64-bit]
      getppid (type:syscall) [enabled] [32/64-bit]
      getpgrp (type:syscall) [enabled] [32/64-bit]
      setsid (type:syscall) [enabled] [32/64-bit]
      setreuid (type:syscall) [enabled] [32/64-bit]
      setregid (type:syscall) [enabled] [32/64-bit]
      getgroups (type:syscall) [enabled] [32/64-bit]
      setgroups (type:syscall) [enabled] [32/64-bit]
      setresuid (type:syscall) [enabled] [32/64-bit]
      getresuid (type:syscall) [enabled] [32/64-bit]
      setresgid (type:syscall) [enabled] [32/64-bit]
      getresgid (type:syscall) [enabled] [32/64-bit]
      getpgid (type:syscall) [enabled] [32/64-bit]
      setfsuid (type:syscall) [enabled] [32/64-bit]
      setfsgid (type:syscall) [enabled] [32/64-bit]
      getsid (type:syscall) [enabled] [32/64-bit]
      rt_sigpending (type:syscall) [enabled] [32/64-bit]
      rt_sigtimedwait (type:syscall) [enabled] [32/64-bit]
      rt_sigqueueinfo (type:syscall) [enabled] [32/64-bit]
      rt_sigsuspend (type:syscall) [enabled] [32/64-bit]
      sigaltstack (type:syscall) [enabled] [64-bit]
      utime (type:syscall) [enabled] [32/64-bit]
      mknod (type:syscall) [enabled] [32/64-bit]
      personality (type:syscall) [enabled] [32/64-bit]
      ustat (type:syscall) [enabled] [32/64-bit]
      statfs (type:syscall) [enabled] [32/64-bit]
      fstatfs (type:syscall) [enabled] [32/64-bit]
      sysfs (type:syscall) [enabled] [32/64-bit]
      getpriority (type:syscall) [enabled] [32/64-bit]
      setpriority (type:syscall) [enabled] [32/64-bit]
      sched_setparam (type:syscall) [enabled] [32/64-bit]
      sched_getparam (type:syscall) [enabled] [32/64-bit]
      sched_setscheduler (type:syscall) [enabled] [32/64-bit]
      sched_getscheduler (type:syscall) [enabled] [32/64-bit]
      sched_get_priority_max (type:syscall) [enabled] [32/64-bit]
      sched_get_priority_min (type:syscall) [enabled] [32/64-bit]
      sched_rr_get_interval (type:syscall) [enabled] [32/64-bit]
      mlock (type:syscall) [enabled] [32/64-bit]
      munlock (type:syscall) [enabled] [32/64-bit]
      mlockall (type:syscall) [enabled] [32/64-bit]
      munlockall (type:syscall) [enabled] [32/64-bit]
      vhangup (type:syscall) [enabled] [32/64-bit]
      pivot_root (type:syscall) [enabled] [32/64-bit]
      sysctl (type:syscall) [enabled] [32/64-bit]
      prctl (type:syscall) [enabled] [32/64-bit]
      adjtimex (type:syscall) [enabled] [32/64-bit]
      setrlimit (type:syscall) [enabled] [32/64-bit]
      chroot (type:syscall) [enabled] [32/64-bit]
      sync (type:syscall) [enabled] [32/64-bit]
      acct (type:syscall) [enabled] [32/64-bit]
      settimeofday (type:syscall) [enabled] [32/64-bit]
      mount (type:syscall) [enabled] [32/64-bit]
      umount (type:syscall) [enabled] [32/64-bit]
      swapon (type:syscall) [enabled] [32/64-bit]
      swapoff (type:syscall) [enabled] [32/64-bit]
      reboot (type:syscall) [enabled] [32/64-bit]
      sethostname (type:syscall) [enabled] [32/64-bit]
      setdomainname (type:syscall) [enabled] [32/64-bit]
      init_module (type:syscall) [enabled] [32/64-bit]
      delete_module (type:syscall) [enabled] [32/64-bit]
      quotactl (type:syscall) [enabled] [32/64-bit]
      gettid (type:syscall) [enabled] [32/64-bit]
      readahead (type:syscall) [enabled] [64-bit]
      setxattr (type:syscall) [enabled] [32/64-bit]
      lsetxattr (type:syscall) [enabled] [32/64-bit]
      fsetxattr (type:syscall) [enabled] [32/64-bit]
      getxattr (type:syscall) [enabled] [32/64-bit]
      lgetxattr (type:syscall) [enabled] [32/64-bit]
      fgetxattr (type:syscall) [enabled] [32/64-bit]
      listxattr (type:syscall) [enabled] [32/64-bit]
      llistxattr (type:syscall) [enabled] [32/64-bit]
      flistxattr (type:syscall) [enabled] [32/64-bit]
      removexattr (type:syscall) [enabled] [32/64-bit]
      lremovexattr (type:syscall) [enabled] [32/64-bit]
      fremovexattr (type:syscall) [enabled] [32/64-bit]
      tkill (type:syscall) [enabled] [32/64-bit]
      time (type:syscall) [enabled] [32/64-bit]
      futex (type:syscall) [enabled] [32/64-bit]
      sched_setaffinity (type:syscall) [enabled] [32/64-bit]
      sched_getaffinity (type:syscall) [enabled] [32/64-bit]
      io_setup (type:syscall) [enabled] [32/64-bit]
      io_destroy (type:syscall) [enabled] [32/64-bit]
      io_getevents (type:syscall) [enabled] [32/64-bit]
      io_submit (type:syscall) [enabled] [32/64-bit]
      io_cancel (type:syscall) [enabled] [32/64-bit]
      lookup_dcookie (type:syscall) [enabled] [64-bit]
      epoll_create (type:syscall) [enabled] [32/64-bit]
      remap_file_pages (type:syscall) [enabled] [32/64-bit]
      getdents64 (type:syscall) [enabled] [32/64-bit]
      set_tid_address (type:syscall) [enabled] [32/64-bit]
      restart_syscall (type:syscall) [enabled] [32/64-bit]
      semtimedop (type:syscall) [enabled] [64-bit]
      fadvise64 (type:syscall) [enabled] [64-bit]
      timer_create (type:syscall) [enabled] [32/64-bit]
      timer_settime (type:syscall) [enabled] [32/64-bit]
      timer_gettime (type:syscall) [enabled] [32/64-bit]
      timer_getoverrun (type:syscall) [enabled] [32/64-bit]
      timer_delete (type:syscall) [enabled] [32/64-bit]
      clock_settime (type:syscall) [enabled] [32/64-bit]
      clock_gettime (type:syscall) [enabled] [32/64-bit]
      clock_getres (type:syscall) [enabled] [32/64-bit]
      clock_nanosleep (type:syscall) [enabled] [32/64-bit]
      exit_group (type:syscall) [enabled] [32/64-bit]
      epoll_wait (type:syscall) [enabled] [32/64-bit]
      epoll_ctl (type:syscall) [enabled] [32/64-bit]
      tgkill (type:syscall) [enabled] [32/64-bit]
      utimes (type:syscall) [enabled] [32/64-bit]
      mbind (type:syscall) [enabled] [64-bit]
      set_mempolicy (type:syscall) [enabled] [64-bit]
      get_mempolicy (type:syscall) [enabled] [64-bit]
      mq_open (type:syscall) [enabled] [32/64-bit]
      mq_unlink (type:syscall) [enabled] [32/64-bit]
      mq_timedsend (type:syscall) [enabled] [32/64-bit]
      mq_timedreceive (type:syscall) [enabled] [32/64-bit]
      mq_notify (type:syscall) [enabled] [32/64-bit]
      mq_getsetattr (type:syscall) [enabled] [32/64-bit]
      kexec_load (type:syscall) [enabled] [32/64-bit]
      waitid (type:syscall) [enabled] [32/64-bit]
      add_key (type:syscall) [enabled] [32/64-bit]
      request_key (type:syscall) [enabled] [32/64-bit]
      keyctl (type:syscall) [enabled] [32/64-bit]
      ioprio_set (type:syscall) [enabled] [32/64-bit]
      ioprio_get (type:syscall) [enabled] [32/64-bit]
      inotify_init (type:syscall) [enabled] [32/64-bit]
      inotify_add_watch (type:syscall) [enabled] [32/64-bit]
      inotify_rm_watch (type:syscall) [enabled] [32/64-bit]
      migrate_pages (type:syscall) [enabled] [64-bit]
      openat (type:syscall) [enabled] [32/64-bit]
      mkdirat (type:syscall) [enabled] [32/64-bit]
      mknodat (type:syscall) [enabled] [32/64-bit]
      fchownat (type:syscall) [enabled] [32/64-bit]
      futimesat (type:syscall) [enabled] [32/64-bit]
      newfstatat (type:syscall) [enabled] [64-bit]
      unlinkat (type:syscall) [enabled] [32/64-bit]
      renameat (type:syscall) [enabled] [32/64-bit]
      linkat (type:syscall) [enabled] [32/64-bit]
      symlinkat (type:syscall) [enabled] [32/64-bit]
      readlinkat (type:syscall) [enabled] [32/64-bit]
      fchmodat (type:syscall) [enabled] [32/64-bit]
      faccessat (type:syscall) [enabled] [32/64-bit]
      pselect6 (type:syscall) [enabled] [32/64-bit]
      ppoll (type:syscall) [enabled] [32/64-bit]
      unshare (type:syscall) [enabled] [32/64-bit]
      set_robust_list (type:syscall) [enabled] [32/64-bit]
      get_robust_list (type:syscall) [enabled] [32/64-bit]
      splice (type:syscall) [enabled] [32/64-bit]
      tee (type:syscall) [enabled] [32/64-bit]
      sync_file_range (type:syscall) [enabled] [64-bit]
      vmsplice (type:syscall) [enabled] [32/64-bit]
      move_pages (type:syscall) [enabled] [64-bit]
      utimensat (type:syscall) [enabled] [32/64-bit]
      epoll_pwait (type:syscall) [enabled] [32/64-bit]
      signalfd (type:syscall) [enabled] [32/64-bit]
      timerfd_create (type:syscall) [enabled] [32/64-bit]
      eventfd (type:syscall) [enabled] [32/64-bit]
      fallocate (type:syscall) [enabled] [64-bit]
      timerfd_settime (type:syscall) [enabled] [32/64-bit]
      timerfd_gettime (type:syscall) [enabled] [32/64-bit]
      accept4 (type:syscall) [enabled] [64-bit]
      signalfd4 (type:syscall) [enabled] [32/64-bit]
      eventfd2 (type:syscall) [enabled] [32/64-bit]
      epoll_create1 (type:syscall) [enabled] [32/64-bit]
      dup3 (type:syscall) [enabled] [32/64-bit]
      pipe2 (type:syscall) [enabled] [32/64-bit]
      inotify_init1 (type:syscall) [enabled] [32/64-bit]
      preadv (type:syscall) [enabled] [32/64-bit]
      pwritev (type:syscall) [enabled] [32/64-bit]
      rt_tgsigqueueinfo (type:syscall) [enabled] [32/64-bit]
      perf_event_open (type:syscall) [enabled] [32/64-bit]
      recvmmsg (type:syscall) [enabled] [32/64-bit]
      fanotify_init (type:syscall) [enabled] [32/64-bit]
      fanotify_mark (type:syscall) [enabled] [64-bit]
      prlimit64 (type:syscall) [enabled] [32/64-bit]
      name_to_handle_at (type:syscall) [enabled] [64-bit]
      open_by_handle_at (type:syscall) [enabled] [64-bit]
      clock_adjtime (type:syscall) [enabled] [32/64-bit]
      syncfs (type:syscall) [enabled] [32/64-bit]
      sendmmsg (type:syscall) [enabled] [32/64-bit]
      setns (type:syscall) [enabled] [32/64-bit]
      getcpu (type:syscall) [enabled] [32/64-bit]
      process_vm_readv (type:syscall) [enabled] [64-bit]
      process_vm_writev (type:syscall) [enabled] [64-bit]
      finit_module (type:syscall) [enabled] [64-bit]
      waitpid (type:syscall) [enabled] [32-bit]
      lchown16 (type:syscall) [enabled] [32-bit]
      stat (type:syscall) [enabled] [32-bit]
      oldumount (type:syscall) [enabled] [32-bit]
      setuid16 (type:syscall) [enabled] [32-bit]
      getuid16 (type:syscall) [enabled] [32-bit]
      stime (type:syscall) [enabled] [32-bit]
      fstat (type:syscall) [enabled] [32-bit]
      nice (type:syscall) [enabled] [32-bit]
      setgid16 (type:syscall) [enabled] [32-bit]
      getgid16 (type:syscall) [enabled] [32-bit]
      signal (type:syscall) [enabled] [32-bit]
      geteuid16 (type:syscall) [enabled] [32-bit]
      getegid16 (type:syscall) [enabled] [32-bit]
      olduname (type:syscall) [enabled] [32-bit]
      sgetmask (type:syscall) [enabled] [32-bit]
      ssetmask (type:syscall) [enabled] [32-bit]
      setreuid16 (type:syscall) [enabled] [32-bit]
      setregid16 (type:syscall) [enabled] [32-bit]
      sigpending (type:syscall) [enabled] [32-bit]
      old_getrlimit (type:syscall) [enabled] [32-bit]
      getgroups16 (type:syscall) [enabled] [32-bit]
      setgroups16 (type:syscall) [enabled] [32-bit]
      old_select (type:syscall) [enabled] [32-bit]
      lstat (type:syscall) [enabled] [32-bit]
      uselib (type:syscall) [enabled] [32-bit]
      old_readdir (type:syscall) [enabled] [32-bit]
      old_mmap (type:syscall) [enabled] [32-bit]
      fchown16 (type:syscall) [enabled] [32-bit]
      socketcall (type:syscall) [enabled] [32-bit]
      uname (type:syscall) [enabled] [32-bit]
      ipc (type:syscall) [enabled] [32-bit]
      sigprocmask (type:syscall) [enabled] [32-bit]
      bdflush (type:syscall) [enabled] [32-bit]
      setfsuid16 (type:syscall) [enabled] [32-bit]
      setfsgid16 (type:syscall) [enabled] [32-bit]
      llseek (type:syscall) [enabled] [32-bit]
      setresuid16 (type:syscall) [enabled] [32-bit]
      getresuid16 (type:syscall) [enabled] [32-bit]
      setresgid16 (type:syscall) [enabled] [32-bit]
      getresgid16 (type:syscall) [enabled] [32-bit]
      chown16 (type:syscall) [enabled] [32-bit]
      sendfile (type:syscall) [enabled] [32-bit]
      mmap_pgoff (type:syscall) [enabled] [32-bit]
      stat64 (type:syscall) [enabled] [32-bit]
      lstat64 (type:syscall) [enabled] [32-bit]
      fstat64 (type:syscall) [enabled] [32-bit]
      fcntl64 (type:syscall) [enabled] [32-bit]
      statfs64 (type:syscall) [enabled] [32-bit]
      fstatfs64 (type:syscall) [enabled] [32-bit]
      fstatat64 (type:syscall) [enabled] [32-bit]