linux-kernel - Re: [PATCH 3/4] tracing/profile: Add filter support

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Message-ID: <20091013100708.GD26846@elte.hu>
Date:	Tue, 13 Oct 2009 12:07:08 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] tracing/profile: Add filter support


* Li Zefan <lizf@...fujitsu.com> wrote:

> +#ifdef CONFIG_EVENT_PROFILE
> +struct perf_event;
> +extern int ftrace_profile_enable(int event_id);
> +extern void ftrace_profile_disable(int event_id);
> +extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
> +				     char *filter_str);
> +extern void ftrace_profile_free_filter(struct perf_event *event);
> +#endif

This reminds me - i think we should eliminate CONFIG_EVENT_PROFILE - 
it's an unnecessary Kconfig complication. If both PERF_EVENTS and 
EVENT_TRACING is enabled we should expose generic tracepoints.

Nor is it limited to event 'profiling', so it has become a misnomer as 
well.

	Ingo
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