diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2012-05-03 23:09:03 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-03-15 00:34:40 -0400 |
| commit | ae63b31e4d0e2ec09c569306ea46f664508ef717 (patch) | |
| tree | 0d40e8fddca53d1776254cd92fc73bc4413ee1f5 /kernel/trace/trace_events_filter.c | |
| parent | 613f04a0f51e6e68ac6fe571ab79da3c0a5eb4da (diff) | |
tracing: Separate out trace events from global variables
The trace events for ftrace are all defined via global variables.
The arrays of events and event systems are linked to a global list.
This prevents multiple users of the event system (what to enable and
what not to).
By adding descriptors to represent the event/file relation, as well
as to which trace_array descriptor they are associated with, allows
for more than one set of events to be defined. Once the trace events
files have a link between the trace event and the trace_array they
are associated with, we can create multiple trace_arrays that can
record separate events in separate buffers.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events_filter.c')
| -rw-r--r-- | kernel/trace/trace_events_filter.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index e5b0ca8b8d4d..2a22a177ab44 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -1907,16 +1907,17 @@ out_unlock: return err; } -int apply_subsystem_event_filter(struct event_subsystem *system, +int apply_subsystem_event_filter(struct ftrace_subsystem_dir *dir, char *filter_string) { + struct event_subsystem *system = dir->subsystem; struct event_filter *filter; int err = 0; mutex_lock(&event_mutex); /* Make sure the system still has events */ - if (!system->nr_events) { + if (!dir->nr_events) { err = -ENODEV; goto out_unlock; } |