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

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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: 428add559b69 ("tracing: Have tracer option be instance specific")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu (Google) 2025-11-19 17:32:05 +09:00 committed by Steven Rostedt (Google)
parent 7a6735cc9b
commit 23c0e9cc76
1 changed files with 6 additions and 3 deletions
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9
kernel/trace/trace.c
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@ -10228,11 +10228,14 @@ 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;
__update_tracer_options(tr);
list_for_each_entry(tr, &ftrace_trace_arrays, list)
__update_tracer_options(tr);
}
/* Must have trace_types_lock held */
@ -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)