Hi Vincent, > On Mon, Nov 29, 2010 at 3:19 PM, Vincent Guittot <vincent.guittot@xxxxxxxxxx> wrote: >> >> This patch extracts the common code of the cpu hotplug feature across >> arm platforms. The goal is to only keep the specific stuff of the >> platform in the sub-architecture. I have created a hotplug.c file in >> the arm/common directory after studying the cpu hotplug code of >> omap2, realview, s5pv310, ux500 and tegra. I have extracted 3 main >> platform dependent functions: >> -platform_enter_lowpower which prepares the platform for low power. >> -platform_do_lowpower on which the cpu will loop until it becomes >> really plugged (spurious wake up). This function must returned the cpu >> Id in order to leave the unplug state. >> -platform_leave_lowpower which restore the platform context. >> An ux500 patch is available which uses the common/hotplug.c code. >> This patch is quite short because the idle / power down functions are >> not yet upstreamed >> > I had posted a patch which does exactly the same thing sometime ago, but it got dropped off from the radar. The patch set can be referenced @ http://www.spinics.net/lists/arm-kernel/msg97600.html I remember getting it Acked by most of the platform maintainers, but Russell had some reservations on that. Cheers! -- --------- The views expressed in this email are my personal ones and do not necessarily echo my employers. -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
