On Thu, 14 Sep 2023 18:02:54 +0800 Linyu Yuan <quic_linyyuan@xxxxxxxxxxx> wrote: > some trace event use an interger to to save a bit field info of gadget, > also some trace save endpoint name in string forat, it all can be > chagned to other way at trace event store phase. > > bit field can be replace with a union interger member which include > multiple bit fields. > > ep name stringe can be replace to a interger which contaion number > and dir info. > > to allow trace output stage can get bit info from save interger, > add DECLARE_EVENT_CLASS_PRINT_INIT() clas which allow user defined > operation before print. > > v1: https://lore.kernel.org/linux-usb/20230911042843.2711-1-quic_linyyuan@xxxxxxxxxxx/ > v2: fix two compile issues that COMPILE_TEST not covered > https://lore.kernel.org/linux-usb/20230911112446.1791-1-quic_linyyuan@xxxxxxxxxxx/ > v3: fix reviewer comments, allow bit fields work on both little and big endian > https://lore.kernel.org/linux-usb/20230912104455.7737-1-quic_linyyuan@xxxxxxxxxxx/ > v4: add DECLARE_EVENT_CLASS_PRINT_INIT() new trace class and use it > All these changes make it useless for user space. :-( -- Steve > Linyu Yuan (8): > trace: add new DECLARE_EVENT_CLASS_PRINT_INIT class type > usb: gadget: add anonymous definition in some struct for trace purpose > usb: udc: trace: reduce buffer usage of trace event > usb: cdns3: trace: reduce buffer usage of trace event > usb: dwc3: trace: reduce buffer usage of trace event > usb: cdns2: trace: reduce buffer usage of trace event > usb: mtu3: trace: reduce buffer usage of trace event > usb: musb: trace: reduce buffer usage of trace event > > drivers/usb/cdns3/cdns3-trace.h | 201 ++++++++++++++------- > drivers/usb/cdns3/cdnsp-trace.h | 105 +++++++---- > drivers/usb/dwc3/trace.h | 99 ++++++---- > drivers/usb/gadget/udc/cdns2/cdns2-trace.h | 175 ++++++++++++------ > drivers/usb/gadget/udc/trace.h | 154 +++++++--------- > drivers/usb/mtu3/mtu3_trace.h | 76 +++++--- > drivers/usb/musb/musb_trace.h | 20 +- > include/linux/tracepoint.h | 22 +++ > include/linux/usb/gadget.h | 113 +++++++----- > include/trace/bpf_probe.h | 4 + > include/trace/perf.h | 43 +++++ > include/trace/stages/stage3_trace_output.h | 3 + > include/trace/trace_events.h | 118 ++++++++++++ > 13 files changed, 784 insertions(+), 349 deletions(-) >
