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[0/4] usb: gadget: configfs: new trace events

Message ID 1647750904-6524-1-git-send-email-quic_linyyuan@quicinc.com (mailing list archive)
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Series usb: gadget: configfs: new trace events | expand

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Linyu Yuan March 20, 2022, 4:35 a.m. UTC 
Last year I try to add trace event support for usb gadget configfs [1],
this time the idea is change a lot, the purpose is trace all user space
operation to gadget configuration, include gadget and it's function.

In usb gadget configfs, mainly user can do mkdir/rmdir a group,
link/unlink a function, change gadget/function attributes,
echo operation will touch a struct config_item.

It only have one trace event entry which store string,
provide several API which represent user operation and generate string
from  struct config_item.

As it is different from last year change, start a new thread.

[1] https://lore.kernel.org/linux-usb/1635229309-2821-1-git-send-email-quic_linyyuan@quicinc.com/

Linyu Yuan (4):
  usb: gadget: add trace event of configfs operation
  usb: gadget: add trace event of configfs group operation
  usb: gadget: add trace event of configfs link/unlink operation
  usb: gadget: add trace event of configfs write attributes operation

 drivers/usb/gadget/Makefile                    |   1 +
 drivers/usb/gadget/configfs.c                  | 188 +++++++++++++++++++++++++
 drivers/usb/gadget/function/f_acm.c            |   1 +
 drivers/usb/gadget/function/f_hid.c            |   4 +
 drivers/usb/gadget/function/f_loopback.c       |   4 +
 drivers/usb/gadget/function/f_mass_storage.c   |  20 +++
 drivers/usb/gadget/function/f_midi.c           |   6 +
 drivers/usb/gadget/function/f_printer.c        |   4 +
 drivers/usb/gadget/function/f_serial.c         |   1 +
 drivers/usb/gadget/function/f_sourcesink.c     |  16 +++
 drivers/usb/gadget/function/f_uac1.c           |   6 +
 drivers/usb/gadget/function/f_uac1_legacy.c    |   4 +
 drivers/usb/gadget/function/f_uac2.c           |   8 ++
 drivers/usb/gadget/function/u_ether_configfs.h |  10 ++
 drivers/usb/gadget/function/uvc_configfs.c     |  42 ++++++
 drivers/usb/gadget/trace.h                     |  39 +++++
 include/linux/usb/composite.h                  |  18 +++
 include/linux/usb/gadget_configfs.h            |   4 +
 18 files changed, 376 insertions(+)
 create mode 100644 drivers/usb/gadget/trace.h