linux-kernel - Re: [PATCH 0/6] perf trace: Add filter support

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Message-ID: <20090908021224.GD6312@nowhere>
Date:	Tue, 8 Sep 2009 04:12:25 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tzanussi@...il.com>,
	Jason Baron <jbaron@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/6] perf trace: Add filter support

On Tue, Sep 08, 2009 at 09:06:49AM +0800, Li Zefan wrote:
> >> An example:
> >>
> >>  #./perf record -f -e irq:irq_handler_entry:irq==18:record
> >>  or
> >>  #./perf record -f -e irq:irq_handler_entry:irq==18 -R
> >>  ^C
> > 
> > We may want to write complex filters. While looking at this patchset,
> > that seems possible this way, but the raw line may become unreadable:
> > 
> > perf record -f -e irq:irq_handler_entry:"irq==18 && (name == 'foo' || bar == 'blah')":record
> > 
> > May be we should add an option to let one also set the filters seperately then
> > we could do:
> > 
> > perf record -f -e -R irq:irq_handler_entry --filter "irq==18 && (name == 'foo' || bar == 'blah')"
> > 
> 
> I had the same idea. ;)
> 
> But using this option, is it possible to specify different filters
> for different events? like this:
> 
> perf record -f -e -R irq:irq_handler_entry --filter "irq==18"
> -e irq:softirq_entry --filter "vec==1"
> 


Exactly how I was imagining it :)

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