arm64: add PSCI CPU_OFF-based hotplug support

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This patch adds support for using PSCI CPU_OFF calls for CPU hotplug.
With this code it is possible to hot unplug CPUs with "psci" as their
boot-method, as long as there's an appropriate cpu_off function id
specified in the psci node.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Mark Rutland 2013-10-24 20:30:19 +01:00 • committed by Catalin Marinas

parent 9327e2c6bb

commit 831ccf79b4

1 changed files with 30 additions and 0 deletions

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arch/arm64/kernel/psci.c

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