From 3f78f935e7fec3067b7990f9e4d324e1de70f79c Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 11 Aug 2011 16:25:48 +0200 Subject: tracing/filter: Simplify tracepoint event lookup We dont need to perform lookup through the ftrace_events list, instead we can use the 'tp_event' field. Each perf_event contains tracepoint event field 'tp_event', which got initialized during the tracepoint event initialization. Signed-off-by: Jiri Olsa Link: http://lkml.kernel.org/r/1313072754-4620-5-git-send-email-jolsa@redhat.com Signed-off-by: Steven Rostedt --- kernel/trace/trace_events_filter.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'kernel/trace') diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 97b93f31884b..0948905dd39c 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -1894,17 +1894,14 @@ int ftrace_profile_set_filter(struct perf_event *event, int event_id, int err; struct event_filter *filter; struct filter_parse_state *ps; - struct ftrace_event_call *call = NULL; + struct ftrace_event_call *call; mutex_lock(&event_mutex); - list_for_each_entry(call, &ftrace_events, list) { - if (call->event.type == event_id) - break; - } + call = event->tp_event; err = -EINVAL; - if (&call->list == &ftrace_events) + if (!call) goto out_unlock; err = -EEXIST; -- cgit v1.2.3