arm64: hibernate: Don't hibernate on systems with stuck CPUs

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Hibernate relies on cpu hotplug to prevent secondary cores executing
the kernel text while it is being restored.

Add a call to cpus_are_stuck_in_kernel() to determine if there are
CPUs not counted by 'num_online_cpus()', and prevent hibernate in this
case.

Fixes: 82869ac57b ("arm64: kernel: Add support for hibernate/suspend-to-disk")
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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James Morse 2016-06-22 10:06:13 +01:00 • committed by Will Deacon

parent 5c492c3f52

commit d74b4e4f1a

1 changed files with 6 additions and 0 deletions

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arch/arm64/kernel/hibernate.c

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