From: Linus Torvalds <torvalds@linux-foundation.org>
To: Bob Peterson <rpeterso@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
Andreas Gruenbacher <agruenba@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Steven Whitehouse <swhiteho@redhat.com>,
Mel Gorman <mgorman@techsingularity.net>,
linux-mm <linux-mm@kvack.org>
Subject: Re: CONFIG_VMAP_STACK, on-stack struct, and wake_up_bit
Date: Wed, 26 Oct 2016 11:10:53 -0700 [thread overview]
Message-ID: <CA+55aFzVmppmua4U0pesp2moz7vVPbH1NP264EKeW3YqOzFc3A@mail.gmail.com> (raw)
In-Reply-To: <996124132.13035408.1477505043741.JavaMail.zimbra@redhat.com>
On Wed, Oct 26, 2016 at 11:04 AM, Bob Peterson <rpeterso@redhat.com> wrote:
>
> I can test it for you, if you give me about an hour.
I can definitely wait an hour, it would be lovely to see more testing.
Especially if you have a NUMA machine and an interesting workload.
And if you actually have that NUMA machine and a load that shows the
page_waietutu effects, it would also be lovely if you can then
_additionally_ test the patch that PeterZ wrote a few weeks ago, it
was on the mm list about a month ago:
Date: Thu, 29 Sep 2016 15:08:27 +0200
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: page_waitqueue() considered harmful
Message-ID: <20160929130827.GX5016@twins.programming.kicks-ass.net>
and if you don't find it I can forward it to you (Peter had a few
versions, that latest one is the one that looked best).
Linus
next prev parent reply other threads:[~2016-10-26 18:11 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-26 12:51 CONFIG_VMAP_STACK, on-stack struct, and wake_up_bit Andreas Gruenbacher
2016-10-26 15:51 ` Andy Lutomirski
2016-10-26 16:32 ` Linus Torvalds
2016-10-26 17:15 ` Linus Torvalds
2016-10-26 17:58 ` Linus Torvalds
2016-10-26 18:04 ` Bob Peterson
2016-10-26 18:10 ` Linus Torvalds [this message]
2016-10-26 19:11 ` Bob Peterson
2016-10-26 21:01 ` Bob Peterson
2016-10-26 21:30 ` Linus Torvalds
2016-10-26 22:45 ` Borislav Petkov
2016-10-26 23:13 ` Borislav Petkov
2016-10-27 0:37 ` Bob Peterson
2016-10-27 12:36 ` Borislav Petkov
2016-10-27 18:51 ` Bob Peterson
2016-10-27 19:19 ` Borislav Petkov
2016-10-27 21:03 ` Bob Peterson
2016-10-27 21:19 ` Borislav Petkov
2016-10-28 8:37 ` [tip:x86/urgent] x86/microcode/AMD: Fix more fallout from CONFIG_RANDOMIZE_MEMORY=y tip-bot for Borislav Petkov
2016-10-26 20:31 ` CONFIG_VMAP_STACK, on-stack struct, and wake_up_bit Mel Gorman
2016-10-26 21:26 ` Linus Torvalds
2016-10-26 22:03 ` Mel Gorman
2016-10-26 22:09 ` Linus Torvalds
2016-10-26 23:07 ` Mel Gorman
2016-10-27 8:08 ` Peter Zijlstra
2016-10-27 9:07 ` Mel Gorman
2016-10-27 9:44 ` Peter Zijlstra
2016-10-27 9:59 ` Mel Gorman
2016-10-27 11:56 ` Nicholas Piggin
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