When the 'kprobe_event=' kernel command-line parameter is not provided, there is no need to execute setup_boot_kprobe_events().
This change optimizes the initialization function init_kprobe_trace() by skipping unnecessary work and effectively prevents potential blocking that could arise from contention on the event_mutex lock in subsequent operations. Signed-off-by: Yaxiong Tian <[email protected]> --- kernel/trace/trace_kprobe.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 9953506370a5..89d2740f7bb5 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -2048,6 +2048,10 @@ static __init int init_kprobe_trace(void) trace_create_file("kprobe_profile", TRACE_MODE_READ, NULL, NULL, &kprobe_profile_ops); + /* If no 'kprobe_event=' cmd is provided, return directly. */ + if (kprobe_boot_events_buf[0] == '\0') + return 0; + setup_boot_kprobe_events(); return 0; -- 2.25.1
