x86, UV: Update Boot messages for SGI UV2 platform

SGI UV systems print a message during boot:

	UV: Found <num> blades

Due to packaging changes, the blade count is not accurate for
on the next generation of the platform. This patch corrects the
count.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/20120106191900.GA19772@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 9d59bba..79b05b8 100644 (file)
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -769,7 +769,12 @@ void __init uv_system_init(void)
        for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
                uv_possible_blades +=
                  hweight64(uv_read_local_mmr( UVH_NODE_PRESENT_TABLE + i * 8));
-       printk(KERN_DEBUG "UV: Found %d blades\n", uv_num_possible_blades());
+
+       /* uv_num_possible_blades() is really the hub count */
+       printk(KERN_INFO "UV: Found %d blades, %d hubs\n",
+                       is_uv1_hub() ? uv_num_possible_blades() :
+                       (uv_num_possible_blades() + 1) / 2,
+                       uv_num_possible_blades());
 
        bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
        uv_blade_info = kzalloc(bytes, GFP_KERNEL);