Re: [PATCH 11/11] perf/x86/intel: Perform rotation on Intel CQM RMIDs

From: Peter Zijlstra
Date: Wed Oct 08 2014 - 14:10:49 EST

On Wed, Sep 24, 2014 at 03:04:15PM +0100, Matt Fleming wrote:
> + limbo_bitmap = kmalloc(sizeof(long) * BITS_TO_LONGS(nr_bits) *
> + nr_cpumask_bits, GFP_KERNEL);

That's going to be a _huge_ amount of memory on SGI class systems. Do we
really need per-cpu storage for this?
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