[PATCH 8/8] usb: musb: trace: reduce buffer usage of trace event

[Linyu Yuan]

Save u32 member into trace event ring buffer and parse it for possible
bit information.

Use DECLARE_EVENT_CLASS_PRINT_INIT() related macro for output stage.

Signed-off-by: Linyu Yuan <quic_linyy...@quicinc.com>
---
 drivers/usb/musb/musb_trace.h | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/musb/musb_trace.h b/drivers/usb/musb/musb_trace.h
index f246b14394c4..8add5e81ed8d 100644
--- a/drivers/usb/musb/musb_trace.h
+++ b/drivers/usb/musb/musb_trace.h
@@ -233,7 +233,7 @@ DEFINE_EVENT(musb_urb, musb_urb_deq,
        TP_ARGS(musb, urb)
 );
 
-DECLARE_EVENT_CLASS(musb_req,
+DECLARE_EVENT_CLASS_PRINT_INIT(musb_req,
        TP_PROTO(struct musb_request *req),
        TP_ARGS(req),
        TP_STRUCT__entry(
@@ -243,9 +243,7 @@ DECLARE_EVENT_CLASS(musb_req,
                __field(int, status)
                __field(unsigned int, buf_len)
                __field(unsigned int, actual_len)
-               __field(unsigned int, zero)
-               __field(unsigned int, short_not_ok)
-               __field(unsigned int, no_interrupt)
+               __field(u32, rdw1)
        ),
        TP_fast_assign(
                __entry->req = &req->request;
@@ -254,18 +252,20 @@ DECLARE_EVENT_CLASS(musb_req,
                __entry->status = req->request.status;
                __entry->buf_len = req->request.length;
                __entry->actual_len = req->request.actual;
-               __entry->zero = req->request.zero;
-               __entry->short_not_ok = req->request.short_not_ok;
-               __entry->no_interrupt = req->request.no_interrupt;
+               __entry->rdw1 = req->request.dw1;
        ),
        TP_printk("%p, ep%d %s, %s%s%s, len %d/%d, status %d",
                        __entry->req, __entry->epnum,
                        __entry->is_tx ? "tx/IN" : "rx/OUT",
-                       __entry->zero ? "Z" : "z",
-                       __entry->short_not_ok ? "S" : "s",
-                       __entry->no_interrupt ? "I" : "i",
+                       tr.zero ? "Z" : "z",
+                       tr.short_not_ok ? "S" : "s",
+                       tr.no_interrupt ? "I" : "i",
                        __entry->actual_len, __entry->buf_len,
                        __entry->status
+       ),
+       TP_printk_init(
+               struct usb_request tr;
+               tr.dw1 = __entry->rdw1;
        )
 );
 
-- 
2.17.1