powerpc/numa: Do not update sysfs cpu registration from invalid context
The topology update code that updates the cpu node registration in sysfs should not be called while in stop_machine(). The register/unregister calls take a lock and may sleep. This patch moves these calls outside of the call to stop_machine(). Signed-off-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> CC: <stable@vger.kernel.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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