linux-kernel - Re: [PATCH v2 0/4] timer: Improve itimers scalability

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Message-ID: <20151015123018.GA12822@lerouge>
Date:	Thu, 15 Oct 2015 14:30:21 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	George Spelvin <linux@...izon.com>
Cc:	jason.low2@...com, mingo@...nel.org, peterz@...radead.org,
	tglx@...utronix.de, akpm@...ux-foundation.org, dave@...olabs.net,
	hideaki.kimura@....com, linux-kernel@...r.kernel.org,
	oleg@...hat.com, paulmck@...ux.vnet.ibm.com, rostedt@...dmis.org,
	scott.norton@....com, terry.rudd@....com
Subject: Re: [PATCH v2 0/4] timer: Improve itimers scalability

On Wed, Oct 14, 2015 at 05:18:27PM -0400, George Spelvin wrote:
> I'm going to give 4/4 a closer look to see if the races with timer
> expiration make more sense to me than last time around.
> (E.g. do CPU time signals even work in CONFIG_NO_HZ_FULL?)

Those enqueued with timer_settime() do work. But itimers,
and rlimits (RLIMIT_RTTIME, RLIMIT_CPU) aren't supported well. I
need to rework that.

> 
> But although I haven't yet convinced myself the current code is right,
> the changes don't seem to make it any worse.  So consider all four
> 
> Reviewed-by: George Spelvin <linux@...izon.com>
> 
> Thank you!
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