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path: root/arch/arm/mach-ux500/hotplug.c
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2012-09-14ARM: consolidate pen_release instead of having per platform definitionsMarc Zyngier
Almost each SMP platform defines pen_release to manage booting secondary CPUs. This of course clashes with the single zImage effort. Add the pen_release definition to the ARM SMP code, and remove all others. This should only be used by platforms which lack any kind of CPU power management... Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-09-14ARM: SoC: convert ux500 to SMP operationsMarc Zyngier
Convert ux500 platforms to use struct smp_operations to provide their SMP and CPU hotplug operations. Cc: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-01-23ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMPWill Deacon
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP for manipulation of devices like interrupt and power controllers when running a UP kernel on a CPU other than 0. This can happen when kexecing a UP image from an SMP kernel. In the future, multi-cluster systems running AMP configurations will require something similar for mapping cluster IDs, so it makes sense to decouple this logic in preparation for this support. Acked-by: Yang Bai <hamo.by@gmail.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reported-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-17ARM: ux500: convert logical CPU numbers to physical numbersWill Deacon
This patch uses the new cpu_logical_map() macro for converting logical CPU numbers into physical numbers when dealing with the pen_release variable in the SMP boot and CPU hotplug paths. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-12-20ARM: CPU hotplug: remove bug checks in platform_cpu_die()Russell King
platform_cpu_die() is entered from the CPU's own idle thread, which can not be migrated to other CPUs. Moreover, the 'cpu' argument comes from the thread info, which will always be the 'current' CPU. So remove this useless bug check. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20ARM: CPU hotplug: move cpu_killed completion to core codeRussell King
We always need to wait for the dying CPU to reach a safe state before taking it down, irrespective of the requirements of the platform. Move the completion code into the ARM SMP hotplug code rather than having each platform re-implement this. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-19ARM: 6391/1: ux500: add CPU hotplug supportSundar Iyer
Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>