From: Steven Rostedt (Google) Date: Tue, 5 Jul 2022 22:44:59 +0000 (-0400) Subject: usb: chipidea: tracing: Use the new __vstring() helper X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1b756b372fbf6ae5bcbbb4a5b7aa271483902fa5;p=linux.git usb: chipidea: 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/20220705224749.991587733@goodmis.org Cc: Peter Chen 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/chipidea/trace.h b/drivers/usb/chipidea/trace.h index 1601fd86c4c10..ca0e65b48f0ae 100644 --- a/drivers/usb/chipidea/trace.h +++ b/drivers/usb/chipidea/trace.h @@ -28,11 +28,11 @@ TRACE_EVENT(ci_log, TP_ARGS(ci, vaf), TP_STRUCT__entry( __string(name, dev_name(ci->dev)) - __dynamic_array(char, msg, CHIPIDEA_MSG_MAX) + __vstring(msg, vaf->fmt, vaf->va) ), TP_fast_assign( __assign_str(name, dev_name(ci->dev)); - vsnprintf(__get_str(msg), CHIPIDEA_MSG_MAX, vaf->fmt, *vaf->va); + __assign_vstr(msg, vaf->fmt, vaf->va); ), TP_printk("%s: %s", __get_str(name), __get_str(msg)) );