linux-kernel - Re: [PATCH 3/6] x86: mm: fix missed global TLB flush stat

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Message-ID: <5356A3B6.30006@redhat.com>
Date:	Tue, 22 Apr 2014 13:15:34 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Dave Hansen <dave@...1.net>, x86@...nel.org
CC:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org, kirill.shutemov@...ux.intel.com,
	mgorman@...e.de, ak@...ux.intel.com, alex.shi@...aro.org,
	dave.hansen@...ux.intel.com
Subject: Re: [PATCH 3/6] x86: mm: fix missed global TLB flush stat

On 04/21/2014 02:24 PM, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@...ux.intel.com>
> 
> If we take the
> 
> 	if (end == TLB_FLUSH_ALL || vmflag & VM_HUGETLB) {
> 		local_flush_tlb();
> 		goto out;
> 	}
> 
> path out of flush_tlb_mm_range(), we will have flushed the tlb,
> but not incremented NR_TLB_LOCAL_FLUSH_ALL.  This unifies the
> way out of the function so that we always take a single path when
> doing a full tlb flush.
> 
> Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>

Acked-by: Rik van Riel <riel@...hat.com>


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