linux-kernel - Re: [PATCH 0/3] coupled cpuidle state support

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]

Message-ID: <87sjjw70zs.fsf@ti.com>
Date:	Tue, 03 Jan 2012 16:41:27 -0800
From:	Kevin Hilman <khilman@...com>
To:	Colin Cross <ccross@...roid.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-pm@...ts.linux-foundation.org,
	Len Brown <len.brown@...el.com>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Amit Kucheria <amit.kucheria@...aro.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Trinabh Gupta <g.trinabh@...il.com>,
	Deepthi Dharwar <deepthi@...ux.vnet.ibm.com>,
	linux-omap@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH 0/3] coupled cpuidle state support

Colin Cross <ccross@...roid.com> writes:


> This patch series implements an alternative solution, where each
> cpu will wait in the WFI state until all cpus are ready to enter
> a coupled state, at which point the coupled state function will
> be called on all cpus at approximately the same time.

This looks great, and is certainly preferred to hotplug IMO.

[...]

> None of the platforms I work with have an SMP idle implementation
> upstream, so I can't easily show a patch that converts a platform
> from hotplug governor to coupled cpuidle states.  

Basic OMAP4 CPUidle support is in now queued for v3.3 (see omap4
branch Tony's tree[1].)  

Can you (or Santosh) send a patch that adds coupled support to that
driver so it can see some broader testing on OMAP4?

Thanks,

Kevin

[1] git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git
--
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/