using SDT events

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Masami,

	Testing something else (event aliases/JSON) I saw the many sdt
events available via 'perf list', decided to use the usual workflow,
failed, what am I doing wrong?


[root@jouet ~]# perf list sdt_qemu:pci*

List of pre-defined events (to be used in -e):

  sdt_qemu:pci_cfg_read                              [SDT event]
  sdt_qemu:pci_cfg_write                             [SDT event]
  sdt_qemu:pci_update_mappings_add                   [SDT event]
  sdt_qemu:pci_update_mappings_del                   [SDT event]
[root@jouet ~]# perf record -e sdt_qemu:pci* -a
event syntax error: 'sdt_qemu:pci*'
                     \___ unknown tracepoint

Error:	File /sys/kernel/debug/tracing/events/sdt_qemu/pci* not found.
Hint:	Perhaps this kernel misses some CONFIG_ setting to enable this
feature?.

Run 'perf list' for a list of valid events

 Usage: perf record [<options>] [<command>]
    or: perf record [<options>] -- <command> [<options>]

    -e, --event <event>   event selector. use 'perf list' to list
available events
[root@jouet ~]#