Re: [PATCH 18/30] x86, kaiser: map virtually-addressed performance monitoring buffers

[Peter Zijlstra]

On Fri, Nov 10, 2017 at 11:31:39AM -0800, Dave Hansen wrote:
>  static int alloc_ds_buffer(int cpu)
>  {
> +	struct debug_store *ds = per_cpu_ptr(&cpu_debug_store, cpu);
>  
> +	memset(ds, 0, sizeof(*ds));

Still wondering about that memset...

>  	per_cpu(cpu_hw_events, cpu).ds = ds;
>  
>  	return 0;