Commit 8d7f5df0 authored Jul 05, 2022 by Steven Rostedt (Google)

tracing/IB/hfi1: 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/20220705224749.239494531@goodmis.org



Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

parent 0563231f

drivers/infiniband/hw/hfi1/trace_dbg.h

+2 −6

Original line number	Diff line number	Diff line
		@@ -26,14 +26,10 @@ DECLARE_EVENT_CLASS(hfi1_trace_template,
		TP_PROTO(const char function, struct va_format vaf),
		TP_ARGS(function, vaf),
		TP_STRUCT__entry(__string(function, function)
		__dynamic_array(char, msg, MAX_MSG_LEN)
		__vstring(msg, vaf->fmt, vaf->va)
		),
		TP_fast_assign(__assign_str(function, function);
		WARN_ON_ONCE(vsnprintf
		(__get_dynamic_array(msg),
		MAX_MSG_LEN, vaf->fmt,
		*vaf->va) >=
		MAX_MSG_LEN);
		__assign_vstr(msg, vaf->fmt, vaf->va);
		),
		TP_printk("(%s) %s",
		__get_str(function),