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Message-ID: <1289558927.2084.212.camel@laptop> Date: Fri, 12 Nov 2010 11:48:47 +0100 From: Peter Zijlstra <a.p.zijlstra@...llo.nl> To: Stephane Eranian <eranian@...gle.com> Cc: Andi Kleen <andi@...stfloor.org>, Corey Ashford <cjashfor@...ux.vnet.ibm.com>, Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org, fweisbec@...il.com, mingo@...e.hu, acme@...hat.com Subject: Re: [PATCH 2/3] perf: Add support for extra parameters for raw events On Fri, 2010-11-12 at 11:41 +0100, Stephane Eranian wrote: > > Can't remember if the load-latency msr is per-core, but its an extra reg > > that needs to be set. > > Load latency is luckily per thread. Nothing special to do to handle this one. > We can restore its value from attr->config. Right, but in effect Andi adds two pieces of infrastructure, - extra_reg, which determines if a particular cntr value needs extra data, this is useful for both the offcore msr and the pebs-ll msr. - per-core constraints, which is useful for shared msrs like the offcore and lbr config things. So while his current patch set only uses either piece once -- to provide offcore support -- both pieces have in fact at least one more potential user (for future patches). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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