linux-kernel - Re: [PATCH] clocksource: dw_apb_timer: add dynamic irq flag to the timer

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, 03 Jul 2015 16:58:44 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Jisheng Zhang <jszhang@...vell.com>, tglx@...utronix.de
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] clocksource: dw_apb_timer: add dynamic irq flag to the
 timer

On 07/03/2015 04:30 PM, Jisheng Zhang wrote:
> Commit d2348fb6fdc6 ("tick: Dynamically set broadcast irq affinity")
> adds one excelent feature CLOCK_EVT_FEAT_DYNIRQ to let the core set the
> interrupt affinity of the broadcast interrupt to the cpu which has the
> earliest expiry time. This patch adds CLOCK_EVT_FEAT_DYNIRQ flag to
> avoid unnecessary wakeups and IPIs when the dw_apb_timer is used as
> broadcast timer.
>
> Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
> ---

I am glad this flag helps. Were you able to do some measurements ?

-- 
  <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog

--
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/