linux-kernel - Re: [PATCH] ACPI/osl: speedup grace period in acpi_os_map

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Message-ID: <CABtfrpDryV5XEzBOttTuGZ7Tvyy4QUo1pajvO07=6tpozjVLzQ@mail.gmail.com>
Date:	Sun, 9 Nov 2014 03:24:34 +0400
From:	Alexander Monakov <amonakov@...il.com>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Konstantin Khlebnikov <koct9i@...il.com>,
	linux-acpi@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	linux-kernel@...r.kernel.org, Len Brown <lenb@...nel.org>,
	Tom Boshoven <tomboshoven@...il.com>, x86@...nel.org,
	Josh Triplett <josh@...htriplett.org>
Subject: Re: [PATCH] ACPI/osl: speedup grace period in acpi_os_map_cleanup

On Sun, Nov 9, 2014 at 1:13 AM, Paul E. McKenney
<paulmck@...ux.vnet.ibm.com> wrote:
>
> Did anyone try replacing the synchronize_rcu() with
> synchronize_rcu_expedited()?  That should provide substantial speedups
> over synchronize_rcu().

I've just briefly tested it on my laptop, and it also helps to avoid the issue.

Alexander
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