linux-kernel - Re: [PATCH 2/3 -tip] perf_counter tools: Add support to set of multiple events in one shot

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Date:	Sat, 27 Jun 2009 18:38:21 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3 -tip] perf_counter tools: Add support to set of
	multiple events in one shot


* Jaswinder Singh Rajput <jaswinder@...nel.org> wrote:

> Add support for HARDWARE and SOFTWARE events :
>  perf stat -e all-sw-events
>  perf stat -e sw-events
>  perf stat -e all-hw-events
>  perf stat -e hw-events

> +static struct event_type_symbol event_type_symbols[] = {
> + [PERF_TYPE_HARDWARE]	= { "hw-events",	"all-hw-events",	},
> + [PERF_TYPE_SOFTWARE]	= { "sw-events",	"all-sw-events",	},

Hm, this really just special-cases and open-codes these. The better 
solution is what i suggested in my review of your prior patches: 
regex pattern matching.

	Ingo
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