From: Steven Rostedt (Google) Date: Tue, 5 Jul 2022 22:45:00 +0000 (-0400) Subject: xhci: tracing: Use the new __vstring() helper X-Git-Tag: v6.1-rc5~555^2~47 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0ba4c9dede106c3e7ad2bb7e23eaa1393adc43a0;p=platform%2Fkernel%2Flinux-starfive.git xhci: tracing: Use the new __vstring() helper Instead of open coding a __dynamic_array() with a fixed length (which defeats the purpose of the dynamic array in the first place). Use the new __vstring() helper that will use a va_list and only write enough of the string into the ring buffer that is needed. Link: https://lkml.kernel.org/r/20220705224750.172301548@goodmis.org Cc: Mathias Nyman Cc: Ingo Molnar Cc: Andrew Morton Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Signed-off-by: Steven Rostedt (Google) --- diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index a5da020..61e93a35 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -28,9 +28,9 @@ DECLARE_EVENT_CLASS(xhci_log_msg, TP_PROTO(struct va_format *vaf), TP_ARGS(vaf), - TP_STRUCT__entry(__dynamic_array(char, msg, XHCI_MSG_MAX)), + TP_STRUCT__entry(__vstring(msg, vaf->fmt, vaf->va)), TP_fast_assign( - vsnprintf(__get_str(msg), XHCI_MSG_MAX, vaf->fmt, *vaf->va); + __assign_vstr(msg, vaf->fmt, vaf->va); ), TP_printk("%s", __get_str(msg)) );