From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
Received: from mail-io0-f197.google.com (mail-io0-f197.google.com [209.85.223.197])
	by kanga.kvack.org (Postfix) with ESMTP id 1461C6B025F
	for <linux-mm@kvack.org>; Tue, 29 Aug 2017 12:24:26 -0400 (EDT)
Received: by mail-io0-f197.google.com with SMTP id c18so30000057ioj.3
        for <linux-mm@kvack.org>; Tue, 29 Aug 2017 09:24:26 -0700 (PDT)
Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41])
        by mx.google.com with SMTPS id n12sor1007715ita.18.2017.08.29.09.24.24
        for <linux-mm@kvack.org>
        (Google Transport Security);
        Tue, 29 Aug 2017 09:24:24 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <bd2d09ea-47d1-c0a7-8d4d-604bb4bc28bc@linux.intel.com>
References: <83f675ad385d67760da4b99cd95ee912ca7c0b44.1503677178.git.tim.c.chen@linux.intel.com>
 <cd8ce7fbca9c126f7f928b8fa48d7a9197955b45.1503677178.git.tim.c.chen@linux.intel.com>
 <CA+55aFyErsNw8bqTOCzcrarDZBdj+Ev=1N3sV-gxtLTH03bBFQ@mail.gmail.com>
 <f10f4c25-49c0-7ef5-55c2-769c8fd9bf90@linux.intel.com> <CA+55aFzNikMsuPAaExxT1Z8MfOeU6EhSn6UPDkkz-MRqamcemg@mail.gmail.com>
 <CA+55aFx67j0u=GNRKoCWpsLRDcHdrjfVvWRS067wLUSfzstgoQ@mail.gmail.com>
 <CA+55aFzy981a8Ab+89APi6Qnb9U9xap=0A6XNc+wZsAWngWPzA@mail.gmail.com>
 <CA+55aFwyCSh1RbJ3d5AXURa4_r5OA_=ZZKQrFX0=Z1J3ZgVJ5g@mail.gmail.com>
 <CA+55aFy18WCqZGwkxH6dTZR9LD9M5nXWqEN8DBeZ4LvNo4Y0BQ@mail.gmail.com>
 <37D7C6CF3E00A74B8858931C1DB2F077537A07E9@SHSMSX103.ccr.corp.intel.com>
 <CA+55aFzotfXc07UoVtxvDpQOP8tEt8pgxeYe+cGs=BDUC_A4pA@mail.gmail.com>
 <37D7C6CF3E00A74B8858931C1DB2F077537A1C19@SHSMSX103.ccr.corp.intel.com>
 <CA+55aFwECeY-x=_du67qAxkta_0LeUw_BQA1kP337SBV3znN2Q@mail.gmail.com> <bd2d09ea-47d1-c0a7-8d4d-604bb4bc28bc@linux.intel.com>
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 29 Aug 2017 09:24:23 -0700
Message-ID: <CA+55aFx3WY00yvEDBg7TagX4h_-QO71=HAq5GAT8awtewRXONQ@mail.gmail.com>
Subject: Re: [PATCH 2/2 v2] sched/wait: Introduce lock breaker in wake_up_page_bit
Content-Type: text/plain; charset="UTF-8"
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "Liang, Kan" <kan.liang@intel.com>, Mel Gorman <mgorman@techsingularity.net>, Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@elte.hu>, Andi Kleen <ak@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, Jan Kara <jack@suse.cz>, Christopher Lameter <cl@linux.com>, "Eric W . Biederman" <ebiederm@xmission.com>, Davidlohr Bueso <dave@stgolabs.net>, linux-mm <linux-mm@kvack.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>

On Tue, Aug 29, 2017 at 9:13 AM, Tim Chen <tim.c.chen@linux.intel.com> wrote:
>
> It is affecting not a production use, but the customer's acceptance
> test for their systems.  So I suspect it is a stress test.

Can you gently poke them and ask if they might make theie stress test
code available?

Tell them that we have a fix, but right now it's delayed into 4.14
because we have no visibility into what it is that it actually fixes,
and whether it's all that critical or just some microbenchmark.

Thanks,

           Linus

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>