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

Frederic Weisbecker
2009-09-08T02:12:27Z

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 :)