linux-kernel - Re: [PATCH RFC V9 0/19] Paravirtualized ticket spinlocks

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Message-ID: <20130601201442.GP6123@two.firstfloor.org>
Date:	Sat, 1 Jun 2013 22:14:43 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Cc:	gleb@...hat.com, mingo@...hat.com, jeremy@...p.org, x86@...nel.org,
	konrad.wilk@...cle.com, hpa@...or.com, pbonzini@...hat.com,
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	srivatsa.vaddagiri@...il.com
Subject: Re: [PATCH RFC V9 0/19] Paravirtualized ticket spinlocks


FWIW I use the paravirt spinlock ops for adding lock elision
to the spinlocks.

This needs to be done at the top level (so the level you're removing)

However I don't like the pv mechanism very much and would 
be fine with using an static key hook in the main path
like I do for all the other lock types.

It also uses interrupt ops patching, for that it would 
be still needed though.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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