On Tue, Oct 26, 2021 at 02:21:49PM +0800, Linyu Yuan wrote:

in case of USB Gadget functions configure through configfs from
a complicated user space program, when switch function from one to another,
if it failed, it is better to find out what action was done to configfs
from user space program.

this change add some trace events which enable/disable a function,
it including add/remove configuration function, bind/unbind UDC,
and some attribute files write operation.

Suggested-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Linyu Yuan <redacted>

Can you break this up into "one patch per trace event"?  That would make
it easier to review and for you to be able to document the locking
issues here better.

thanks,

greg k-h