| bca7a5a04933700a8bde4ea5798119607a8b0436 |
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18-Apr-2013 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: cpu hotplug: remove majority of cache flushing from platforms
Remove the majority of cache flushing calls from the individual platform
files. This is now handled by the core code.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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| 28e8e29c616f947348cc66bea684d0035c76021a |
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12-Jun-2012 |
Marc Zyngier <marc.zyngier@arm.com> |
ARM: consolidate pen_release instead of having per platform definitions
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>
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| 3695adc2fdaf3ad1881e0dd3e3422e5e141abd7d |
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08-Sep-2011 |
Marc Zyngier <marc.zyngier@arm.com> |
ARM: SoC: convert VExpress/RealView to SMP operations
Convert both Realview and VExpress to use struct smp_operations to
provide their SMP and CPU hotplug operation.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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| 15d07dc9c59eae51219c40253bdf920f62bb10f2 |
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28-Mar-2012 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: move CP15 definitions to separate header file
Avoid namespace conflicts with drivers over the CP15 definitions by
moving CP15 related prototypes and definitions to a private header
file.
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com> [Tegra]
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> [EP93xx]
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
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| 195864cf3d6f5b6b743793bda3aaa2ff65d322ae |
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19-Jan-2012 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: move CP15 definitions to separate header file
Avoid namespace conflicts with drivers over the CP15 definitions by
moving CP15 related prototypes and definitions to a private header
file.
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com> [Tegra]
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> [EP93xx]
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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| eb50439b92b6298bf209a982f295ba9c0f7cb30b |
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20-Jan-2012 |
Will Deacon <will.deacon@arm.com> |
ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
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>
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| 4a139b64703115e41e1a4e16ebf7eb93d0a0e349 |
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09-Aug-2011 |
Will Deacon <will.deacon@arm.com> |
ARM: versatile: convert logical CPU numbers to physical numbers
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.
Signed-off-by: Will Deacon <will.deacon@arm.com>
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| e3d9c625f5e4158014e041f492b46e38ad10987e |
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19-Dec-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: CPU hotplug: fix hard-coded control register constants
Use the definition we've provided in asm/system.h rather than
numeric constants.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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| d4450261e546953c4a1ce8b48e29164a57c6ed33 |
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19-Dec-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: CPU hotplug: fix reporting of spurious wakeups
The original scheme for reporting spurious wakeups was broken - it
tried to use printk() from a context which wasn't coherent with the
other CPUs, which risks corrupting the printk() data.
Fix this by noting the number spurious wakeups, and only report them
when we are properly woken - when we will be coherent with the rest
of the system.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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| bbc81fd4327f9ed4480b05981e38acd48b1d184a |
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30-Nov-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: CPU hotplug: remove bug checks in platform_cpu_die()
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>
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| 3c030beabf937b1d3b4ecaedfd1fb2f1e2aa0c70 |
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30-Nov-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: CPU hotplug: move cpu_killed completion to core code
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>
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| 8e2a43f5f5e1255879064924917fb1a6e5be7cb3 |
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15-May-2010 |
Russell King <rmk+kernel@arm.linux.org.uk> |
ARM: rename mach_cpu_disable() to platform_cpu_disable()
Consistently name all SMP platform related functions.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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| 8aa2da872a492a2196397603ed756a4c48677122 |
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01-Dec-2008 |
Harry Fearnhamm <Harry.Fearnhamm@arm.com> |
RealView: Use flush_cache_all() rather than MCR in cpu_enter_lowpower()
The MCR for flushing the whole D cache is undefined on ARMv7 CPUs.
Signed-off-by: Harry Fearnhamm <Harry.Fearnhamm@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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| 97a63ecff4bd06da5d8feb8c0394a4d020f2d34d |
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09-Nov-2005 |
Russell King <rmk@dyn-67.arm.linux.org.uk> |
[ARM SMP] Add CPU hotplug support for Realview MPcore
Add platform specific parts for hotplug CPU support for the
Realview board.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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