linux-kernel - Re: [PATCH 7/7] tracing: change filter_free_subsystem_*() to check ->subsystem rather then ->name

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Date:	Mon, 14 Jul 2014 21:23:54 +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 7/7] tracing: change filter_free_subsystem_*() to check
	->subsystem rather then ->name

On 07/14, Steven Rostedt wrote:
>
> On Fri, 11 Jul 2014 21:06:55 +0200
> Oleg Nesterov <oleg@...hat.com> wrote:
> 
> > @@ -846,13 +846,10 @@ static void filter_free_subsystem_preds(struct event_subsystem *system,
> >  					struct trace_array *tr)
> >  {
> >  	struct ftrace_event_file *file;
> > -	struct ftrace_event_call *call;
> >  
> >  	list_for_each_entry(file, &tr->events, list) {
> > -		call = file->event_call;
> > -		if (strcmp(call->class->system, system->name) != 0)
> > +		if (file->system->subsystem != system)
> 
> This is only used on one place. What about just passing in dir instead
> of system and then do:

I swear, I too thought about this ;) OK, in v2.

Oleg.

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