tracing_init_dentry() has two types of return value: * NULL if succeed * IS_ERR() if failed
If the function return error, the following check would return from the function. So we are sure d_tracer passed in here is NULL. This is a preparation for following cleanup. Signed-off-by: Wei Yang <[email protected]> --- kernel/trace/trace_events.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index f6f55682d3e2..8b3aa57dcea6 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -3446,7 +3446,7 @@ __init int event_trace_init(void) if (IS_ERR(d_tracer)) return 0; - entry = tracefs_create_file("available_events", 0444, d_tracer, + entry = tracefs_create_file("available_events", 0444, NULL, tr, &ftrace_avail_fops); if (!entry) pr_warn("Could not create tracefs 'available_events' entry\n"); @@ -3457,7 +3457,7 @@ __init int event_trace_init(void) if (trace_define_common_fields()) pr_warn("tracing: Failed to allocate common fields"); - ret = early_event_add_tracer(d_tracer, tr); + ret = early_event_add_tracer(NULL, tr); if (ret) return ret; -- 2.20.1 (Apple Git-117)
