Commit c791cc4b authored by Steven Rostedt (VMware)'s avatar Steven Rostedt (VMware)
Browse files

tracing: Only allow trace_array_printk() to be used by instances 



To prevent default "trace_printks()" from spamming the top level tracing
ring buffer, only allow trace instances to use trace_array_printk() (which
can be used without the trace_printk() start up warning).

Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 9ebcfadb

kernel/trace/trace.c

+7 −3
Original line number Diff line number Diff line
@@ -3346,12 +3346,16 @@ int trace_array_printk(struct trace_array *tr, 
	int ret;

	va_list ap;



	if (!(global_trace.trace_flags & TRACE_ITER_PRINTK))

		return 0;



	if (!tr)

		return -ENOENT;



	/* This is only allowed for created instances */

	if (tr == &global_trace)

		return 0;



	if (!(tr->trace_flags & TRACE_ITER_PRINTK))

		return 0;



	va_start(ap, fmt);

	ret = trace_array_vprintk(tr, ip, fmt, ap);

	va_end(ap);

CRA Git | Maintained and supported by SUSTech CRA and CCSE