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

[Peter Zijlstra]

On Tue, 2009-10-13 at 10:19 +0800, Li Zefan wrote:
> +#ifdef CONFIG_EVENT_PROFILE
> +       struct event_filter             *filter;
> +       int                             filter_active;
>  #endif

Why do you need filter_active, isn't !filter equivalent?
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