linux-kernel - Re: [PATCH v2 6/7] tracing: change apply_subsystem_event_filter() paths to check file->system == dir

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Message-ID: <20140716191248.GA6854@redhat.com>
Date:	Wed, 16 Jul 2014 21:12:48 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Tom Zanussi <tom.zanussi@...ux.intel.com>,
	"zhangwei(Jovi)" <jovi.zhangwei@...wei.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/7] tracing: change apply_subsystem_event_filter()
	paths to check file->system == dir

On 07/16, Steven Rostedt wrote:
>
> On Tue, 15 Jul 2014 20:48:29 +0200
> Oleg Nesterov <oleg@...hat.com> wrote:
>
> > 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.
>
> What? No thanks to me for suggesting the file->system == dir idea?
>
> /me pouts like a baby

OOPS, sorry, Iactually forgot to add "as suggested by" ;)

But, otoh... who cares about rostedt when it comes to tracing area?

Oleg.

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