linux-kernel - Re: [PATCH V2 1/2] Tick: Introduce tick_nohz

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

Date:	Fri, 15 Nov 2013 16:05:58 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Lan Tianyu <tianyu.lan@...el.com>
Cc:	dipankar@...ibm.com, Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Steven Rostedt <rostedt@...dmis.org>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 1/2] Tick: Introduce tick_nohz_check() to check nohz
 enable status

On 15 November 2013 14:05, Lan Tianyu <tianyu.lan@...el.com> wrote:
> In some cases, nohz enable status needs to be checked. E.G, in RCU and cpufreq
> ondemand governor. So add tick_nohz_check() to return tick_nohz_enabled value
> And use tick_nohz_check() instead of referencing tick_nohz_enabled in the rcutree_plugin.h.
>
> Signed-off-by: Lan Tianyu <tianyu.lan@...el.com>
> ---
>
> Change since V2:
>         Add ACCESS_ONCE to tick_nohz_check().
>
>  include/linux/tick.h     | 2 ++
>  kernel/rcutree_plugin.h  | 4 +---
>  kernel/time/tick-sched.c | 8 +++++++-
>  3 files changed, 10 insertions(+), 4 deletions(-)

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
--
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/