From: Oleg Nesterov <oleg@redhat.com>
Date: Tue, 15 Jul 2014 18:48:29 +0000 (+0200)
Subject: tracing: Change apply_subsystem_event_filter() paths to check file->system == dir
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~185^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb9ef1cb7d8668d6b0038b6f9f783c849135e40d;p=pandora-kernel.git

tracing: Change apply_subsystem_event_filter() paths to check file->system == dir

filter_free_subsystem_preds(), filter_free_subsystem_filters() and
replace_system_preds() can simply check file->system->subsystem and
avoid strcmp(call->class->system).

Better yet, we can pass "struct ftrace_subsystem_dir *dir" instead of
event_subsystem and just check file->system == dir.

Thanks to Namhyung Kim who pointed out that replace_system_preds() can
be changed too.

Link: http://lkml.kernel.org/p/20140715184829.GA20516@redhat.com

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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