linux-kernel - Re: [GIT PULL v2] nohz: Posix cpu timers handling on full dynticks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sun, 21 Apr 2013 11:26:52 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Chris Metcalf <cmetcalf@...era.com>,
	Christoph Lameter <cl@...ux.com>,
	Geoff Levand <geoff@...radead.org>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Hakan Akkan <hakanakkan@...il.com>,
	Kevin Hilman <khilman@...aro.org>,
	Li Zhong <zhong@...ux.vnet.ibm.com>,
	Oleg Nesterov <oleg@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [GIT PULL v2] nohz: Posix cpu timers handling on full dynticks


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> Ingo,
> 
> Please pull this second version of the dynticks handling of posix cpu
> timers from:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
> 	timers/nohz-posix-timers-v2
> 
> This fixes an issue with a race between run_posix_cpu_timers() and full
> dynticks CPUs that we found while discussing a patch with Olivier Langlois.
> 
> As a bonus, it also provides the other side of posix cpu timers handling
> in dynticks with the new helper to check before stopping the tick.
> 
> Thanks.
> 
> Frederic Weisbecker (3):
>   nohz: New APIs to re-evaluate the tick on full dynticks CPUs
>   posix_timers: Kick full dynticks CPUs when a posix cpu timer is armed
>   posix_timers: New API to prevent from stopping the tick when timers
>     are running
> 
>  include/linux/posix-timers.h |    2 +
>  include/linux/tick.h         |    4 ++
>  kernel/posix-cpu-timers.c    |   76 +++++++++++++++++++++++++++++++++---------
>  kernel/time/Kconfig          |    1 +
>  kernel/time/tick-sched.c     |   51 ++++++++++++++++++++++++++++
>  5 files changed, 118 insertions(+), 16 deletions(-)

Pulled, thanks Frederic!

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/