linux-kernel - Re: [PATCH v2 1/2] x86/mm: TLB_REMOTE_SEND

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Date:	Mon, 28 Mar 2016 20:44:07 +0000
From:	Nadav Amit <namit@...are.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"hpa@...or.com" <hpa@...or.com>, "x86@...nel.org" <x86@...nel.org>,
	"mgorman@...e.de" <mgorman@...e.de>,
	"sasha.levin@...cle.com" <sasha.levin@...cle.com>,
	"riel@...hat.com" <riel@...hat.com>,
	"dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
	"luto@...nel.org" <luto@...nel.org>,
	"kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
	"mhocko@...e.com" <mhocko@...e.com>,
	"jmarchan@...hat.com" <jmarchan@...hat.com>,
	"hughd@...gle.com" <hughd@...gle.com>,
	"vdavydov@...tuozzo.com" <vdavydov@...tuozzo.com>,
	"minchan@...nel.org" <minchan@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mel Gorman <mgorman@...hsingularity.net>
Subject: Re: [PATCH v2 1/2] x86/mm: TLB_REMOTE_SEND_IPI should count pages

On 3/28/16, 1:38 PM, "Andrew Morton" <akpm@...ux-foundation.org> wrote:


>On Sat, 26 Mar 2016 01:25:04 -0700 Nadav Amit <namit@...are.com> wrote:
>
>> TLB_REMOTE_SEND_IPI was recently introduced, but it counts bytes instead
>> of pages. In addition, it does not report correctly the case in which
>> flush_tlb_page flushes a page. Fix it to be consistent with other TLB
>> counters.
>> 
>> Fixes: 4595f9620cda8a1e973588e743cf5f8436dd20c6
>
>I think you mean 5b74283ab251b9 ("x86, mm: trace when an IPI is about
>to be sent")?

Indeed.