linux-kernel - Re: [PATCH V2] X86: Fix x86_cache

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Message-ID: <25944.1250273356@turing-police.cc.vt.edu>
Date:	Fri, 14 Aug 2009 14:09:16 -0400
From:	Valdis.Kletnieks@...edu
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] X86: Fix x86_cache_size value

On Fri, 14 Aug 2009 16:03:56 +0530, Jaswinder Singh Rajput said:
> Currently x86_cache_size is showing partial value: L1 or L2 or L3.
> It should add all caches like L1 + L2 + L3 + Trace.

*Why* should it?  Adding the L1 cache probably makes little or no difference
when the L2/L3 caches are usually so much larger (on my laptop, there's a
whole whopping 32K of L1, but 4M of L2 and no L3). It *might* make sense
to report L2+L3.  It would depend on who uses that number, and for what.

But adding the trace cache is just batshit crazy.

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