From 6c3ff8b11a16ec69199ab85b74a5fae6d9c59db7 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 30 Oct 2013 18:21:09 -0700 Subject: [PATCH] ARM: Introduce CPU_METHOD_OF_DECLARE() for cpu hotplug/smp The goal of multi-platform kernels is to remove the need for mach directories and machine descriptors. To further that goal, introduce CPU_METHOD_OF_DECLARE() to allow cpu hotplug/smp support to be separated from the machine descriptors. Implementers should specify an enable-method property in their cpus node and then implement a matching set of smp_ops in their hotplug/smp code, wiring it up with the CPU_METHOD_OF_DECLARE() macro. When the kernel is compiled we'll collect all the enable-method smp_ops into one section for use at boot. At boot time we'll look for an enable-method in each cpu node and try to match that against all known CPU enable methods in the kernel. If there are no enable-methods in the cpu nodes we fallback to the cpus node and try to use any enable-method found there. If that doesn't work we fall back to the old way of using the machine descriptor. Acked-by: Mark Rutland Cc: Russell King Cc: Signed-off-by: Stephen Boyd Signed-off-by: Kumar Gala --- Reading git-format-patch failed