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

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Message-ID: <4AA5AE29.6020107@cn.fujitsu.com>
Date:	Tue, 08 Sep 2009 09:06:49 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Frederic Weisbecker <fweisbec@...il.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

>> 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"

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