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[v13,0/2] usb: gadget: configfs: add some trace event

Message ID 1635229309-2821-1-git-send-email-quic_linyyuan@quicinc.com (mailing list archive)
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Series usb: gadget: configfs: add some trace event | expand

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Linyu Yuan Oct. 26, 2021, 6:21 a.m. UTC 
this series make some minor change to gadget configfs and
add some important trace event from configfs layer.

follow suggestion from Felipe Balbi in link below,
https://lore.kernel.org/linux-usb/1629777281-30188-1-git-send-email-quic_linyyuan@quicinc.com/

v2: fix two issue Reported-by: kernel test robot <lkp@intel.com>
v3: do not move private structure to configfs.h
v4: add missing new file configfs_trace.h
v5: lost some change of v2, add it again
v6: fix comments from Greg Kroah-Hartman
v7: three minor changes according to coding rules
v8: change two trace location
v9: fix when config is empty
v10: fix wrong api in v9
v11: split to three changes, minor change to trace event print format
v12: use mutex lock gi->lock to make sure data safe for trace
v13: rebase; add more trace entries; define three event class to remove lock concern

trace event will looks like as below,
config_usb_cfg_link: dummy: dummy: 1 128 2 gser
configfs_composite_bind: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0000 00 00 00 00 0000 0000 0515 6 0 0000000000000000000000000000
gadget_dev_desc_UDC_store: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0000 00 00 00 00 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_reset: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0000 00 00 00 00 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_resume: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0000 00 00 00 00 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_setup: dummy: dummy_udc.0: 0 0 0 0 1 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_reset: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_resume: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_setup: dummy: dummy_udc.0: 0 0 0 0 1 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_setup: dummy: dummy_udc.0: 0 0 0 0 1 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_setup: dummy: dummy_udc.0: 0 0 0 0 1 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_setup: dummy: dummy_udc.0: 0 0 0 0 1 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
unregister_gadget: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_suspend: dummy: dummy_udc.0: 0 0 0 1 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_disconnect: dummy: dummy_udc.0: 0 0 0 0 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
configfs_composite_unbind: dummy: dummy_udc.0: 1 0 0 0 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000
gadget_dev_desc_UDC_store: dummy: (null): 1 0 0 0 0 0 0 0 0200 00 00 00 40 0000 0000 0515 6 0 0000000000000000000000000000


Linyu Yuan (2):
  usb: gadget: configfs: add explicit gi variable
  usb: gadget: configfs: add trace events

 drivers/usb/gadget/configfs.c       |  62 +++++---
 drivers/usb/gadget/configfs_trace.h | 273 ++++++++++++++++++++++++++++++++++++
 2 files changed, 319 insertions(+), 16 deletions(-)
 create mode 100644 drivers/usb/gadget/configfs_trace.h