Commit cb599747 authored by Ilya Dryomov's avatar Ilya Dryomov Committed by Steven Rostedt

tracing: fix event_subsystem ref counting

Fix a bug introduced by e9dbfae5, which prevents event_subsystem from
ever being released.

Ref_count was added to keep track of subsystem users, not for counting
events.  Subsystem is created with ref_count = 1, so there is no need to
increment it for every event, we have nr_events for that.  Fix this by
touching ref_count only when we actually have a new user -
subsystem_open().

Cc: stable@vger.kernel.org
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
Link: http://lkml.kernel.org/r/1320052062-7846-1-git-send-email-idryomov@gmail.comSigned-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent dc440d10
...@@ -1078,7 +1078,6 @@ event_subsystem_dir(const char *name, struct dentry *d_events) ...@@ -1078,7 +1078,6 @@ event_subsystem_dir(const char *name, struct dentry *d_events)
/* First see if we did not already create this dir */ /* First see if we did not already create this dir */
list_for_each_entry(system, &event_subsystems, list) { list_for_each_entry(system, &event_subsystems, list) {
if (strcmp(system->name, name) == 0) { if (strcmp(system->name, name) == 0) {
__get_system(system);
system->nr_events++; system->nr_events++;
return system->entry; return system->entry;
} }
......
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