From: Li Zefan Every event (or event class) has it's define_fields callback, so the test is redundant. Signed-off-by: Li Zefan LKML-Reference: <4BFA37BC.8080707@cn.fujitsu.com> Signed-off-by: Steven Rostedt --- kernel/trace/trace_events.c | 28 +++++++++++++--------------- kernel/trace/trace_events_filter.c | 9 --------- 2 files changed, 13 insertions(+), 24 deletions(-) diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index efe1ffd..b5d5b73 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -987,23 +987,21 @@ event_create_dir(struct ftrace_event_call *call, struct dentry *d_events, id); #endif - if (call->class->define_fields) { - /* - * Other events may have the same class. Only update - * the fields if they are not already defined. - */ - head = trace_get_fields(call); - if (list_empty(head)) { - ret = call->class->define_fields(call); - if (ret < 0) { - pr_warning("Could not initialize trace point" - " events/%s\n", call->name); - return ret; - } + /* + * Other events may have the same class. Only update + * the fields if they are not already defined. + */ + head = trace_get_fields(call); + if (list_empty(head)) { + ret = call->class->define_fields(call); + if (ret < 0) { + pr_warning("Could not initialize trace point" + " events/%s\n", call->name); + return ret; } - trace_create_file("filter", 0644, call->dir, call, - filter); } + trace_create_file("filter", 0644, call->dir, call, + filter); trace_create_file("format", 0444, call->dir, call, format); diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 330fefd..36d4010 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -639,9 +639,6 @@ static int init_subsystem_preds(struct event_subsystem *system) int err; list_for_each_entry(call, &ftrace_events, list) { - if (!call->class || !call->class->define_fields) - continue; - if (strcmp(call->class->system, system->name) != 0) continue; @@ -658,9 +655,6 @@ static void filter_free_subsystem_preds(struct event_subsystem *system) struct ftrace_event_call *call; list_for_each_entry(call, &ftrace_events, list) { - if (!call->class || !call->class->define_fields) - continue; - if (strcmp(call->class->system, system->name) != 0) continue; @@ -1263,9 +1257,6 @@ static int replace_system_preds(struct event_subsystem *system, list_for_each_entry(call, &ftrace_events, list) { struct event_filter *filter = call->filter; - if (!call->class || !call->class->define_fields) - continue; - if (strcmp(call->class->system, system->name) != 0) continue; -- 1.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/