linux-kernel - Re: [PATCH 0/5] ipc/msg: Sender/receiver optimizations

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Message-ID: <20160804164409.GS6862@twins.programming.kicks-ass.net>
Date:	Thu, 4 Aug 2016 18:44:09 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Davidlohr Bueso <dave@...olabs.net>
Cc:	akpm@...ux-foundation.org, manfred@...orfullife.com,
	bigeasy@...utronix.de, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] ipc/msg: Sender/receiver optimizations

On Thu, Jul 28, 2016 at 04:33:34PM -0700, Davidlohr Bueso wrote:
> Hi,
> 
> I'm resending Sebastian's sysv msg queue use of wake_qs but updated
> to the last observations I need wrt the need of explicit barriers
> after removing the whole receiver busy-looping. After some irc exchange
> it seems we're both on the same page, and things now look like he had
> them earlier, in v2. This is all patch 1.
> 
> The rest of the patches are changes I noticed while reviewing patch 1,
> which are mainly sender-side rework/optimizations. Details are in each
> changelog.
> 
> The changes have survived ltp (which has some nasty corner cases for msgsnd
> changes), as well as pmsg-shared benchmark.

Not really my area, but over all the patches look good.

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>