Re: [PATCH 1/4] perf: Add memory load/store events generic code

[Lin Ming]

On Mon, 2011-07-04 at 19:16 +0800, Peter Zijlstra wrote:
> On Mon, 2011-07-04 at 08:02 +0000, Lin Ming wrote:
> > +#define MEM_STORE_DCU_HIT              (1ULL << 0)
> 
> I'm pretty sure that's not Dublin City University, but what is it?
> Data-Cache-Unit? what does that mean, L1/L2 or also L3? 
> 
> > +#define MEM_STORE_STLB_HIT             (1ULL << 1)
> 
> What's an sTLB? I know iTLB and dTLB's but sTLBs I've not heard of yet.
> 
> > +#define MEM_STORE_LOCKED_ACCESS                (1ULL << 2) 
> 
> Presumably that's about LOCK'ed ops?
> 
> So now you're just tacking bits on the end without even attempting to
> generalize/unify things, not charmed at all.

Any idea on the more useful store bits encoding?

Thanks,
Lin Ming


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