linux-toradex.git/arch/arm/mach-msm/hotplug.c, branch v3.4-rc2 Linux kernel for Apalis and Colibri modules ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP 2012-01-23T10:20:05+00:00 Will Deacon will.deacon@arm.com 2012-01-20T11:01:12+00:00 eb50439b92b6298bf209a982f295ba9c0f7cb30b 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> 
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>
ARM: msm: convert logical CPU numbers to physical numbers 2011-10-17T09:01:11+00:00 Will Deacon will.deacon@arm.com 2011-08-09T11:02:27+00:00 1d3cfb34f9605578b4f733acba4affa751b2e4a2 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. Tested-and-acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com> 
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.

Tested-and-acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
msm: hotplug: support cpu hotplug on msm 2011-01-07T23:54:44+00:00 Jeff Ohlstein johlstei@codeaurora.org 2010-12-02T20:11:27+00:00 9f1890a5de2a5fcf4fd9ffa3115047eed834349c Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> 
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>