Re: [PATCH v5 09/18] perf: disable PERF_SAMPLE_BRANCH_* when notsupported

[Peter Zijlstra]

On Thu, 2012-02-02 at 13:54 +0100, Stephane Eranian wrote:
> @@ -539,6 +539,10 @@ static int armpmu_event_init(struct perf_event *event)
>         int err = 0;
>         atomic_t *active_events = &armpmu->active_events;
>  
> +       /* does not support taken branch sampling */
> +       if (has_branch_smpl(event))
> +               return -EOPNOTSUPP;
> +
>         if (armpmu->map_event(event) == -ENOENT) 

I'll make that has_branch_stack(), ok? :-)

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