Commit 23c0e9cc authored by Masami Hiramatsu (Google)'s avatar Masami Hiramatsu (Google) Committed by Steven Rostedt (Google)
Browse files

tracing: Show the tracer options in boot-time created instance 

Since tracer_init_tracefs_work_func() only updates the tracer options
for the global_trace, the instances created by the kernel cmdline
do not have those options.

Fix to update tracer options for those boot-time created instances
to show those options.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/176354112555.2356172.3989277078358802353.stgit@mhiramat.tok.corp.google.com


Fixes: 428add55 ("tracing: Have tracer option be instance specific")
Signed-off-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 7a6735cc

kernel/trace/trace.c

+6 −3
Original line number Diff line number Diff line
@@ -10228,10 +10228,13 @@ static __init int __update_tracer_options(struct trace_array *tr) 
	return ret;

}



static __init void update_tracer_options(struct trace_array *tr)

static __init void update_tracer_options(void)

{

	struct trace_array *tr;



	guard(mutex)(&trace_types_lock);

	tracer_options_updated = true;

	list_for_each_entry(tr, &ftrace_trace_arrays, list)

		__update_tracer_options(tr);

}
@@ -10934,7 +10937,7 @@ static __init void tracer_init_tracefs_work_func(struct work_struct *work) 


	create_trace_instances(NULL);



	update_tracer_options(&global_trace);

	update_tracer_options();

}



static __init int tracer_init_tracefs(void)