MIPS: Netlogic: Add macro for node present

Add macro nlm_node_present() that can be used to check if a node is present
in a multi-chip configuration. This can be used even when NUMA is not enabled.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6272/

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-netlogic/multi-node.h b/arch/mips/include/asm/mach-netlogic/multi-node.h
index b3d91e0c10dd..beeb36b9f9f8 100644
--- a/arch/mips/include/asm/mach-netlogic/multi-node.h
+++ b/arch/mips/include/asm/mach-netlogic/multi-node.h
@@ -63,6 +63,8 @@ struct nlm_soc_info {
 
 extern struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
 #define nlm_get_node(i)         (&nlm_nodes[i])
+#define nlm_node_present(n)     ((n) >= 0 && (n) < NLM_NR_NODES && \
+                                        nlm_get_node(n)->coremask != 0)
 #ifdef CONFIG_CPU_XLR
 #define nlm_current_node()      (&nlm_nodes[0])
 #else