linux-kernel - Re: [LKP] [mm] 721c21c17ab: +11.7% will-it-scale.per_thread

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Message-ID: <1423114910.5968.9.camel@linux.intel.com>
Date:	Thu, 05 Feb 2015 13:41:50 +0800
From:	Huang Ying <ying.huang@...ux.intel.com>
To:	Will Deacon <will.deacon@....com>
Cc:	LKP ML <lkp@...org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [LKP] [mm] 721c21c17ab: +11.7% will-it-scale.per_thread_ops

On Tue, 2015-02-03 at 10:27 +0000, Will Deacon wrote:
> On Tue, Feb 03, 2015 at 07:45:04AM +0000, Huang Ying wrote:
> > FYI, we noticed the below changes on
> > 
> > commit 721c21c17ab958abf19a8fc611c3bd4743680e38 ("mm: mmu_gather: use
> > tlb->end != 0 only for TLB invalidation")
> 
> Is this delta relative to the previous commit, or something else? The
> commit in question restored some 3.18 behaviour on task exit (namely
> doing a fullmm TLB flush), so it would be interesting to know if you
> see the same change against 3.18.

Sorry for late.  The delta is relative to the previous commit.  I will
queue some test for 3.18 to check.

Best Regards,
Huang, Ying


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