x86: enable cpus display of kernel_max and offlined cpus
Mike Travis [Thu, 1 Jan 2009 02:08:45 +0000 (18:08 -0800)]
Impact: enables /sys/devices/system/cpu/{kernel_max,offline} user interface

By setting total_cpus, the drivers/base/cpu.c will display the
values of kernel_max (NR_CPUS-1) and the offlined cpu map.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/smpboot.c

index 9e177a4..f49c26b 100644 (file)
@@ -1298,6 +1298,8 @@ __init void prefill_possible_map(void)
        else
                possible = setup_possible_cpus;
 
+       total_cpus = max_t(int, possible, num_processors + disabled_cpus);
+
        if (possible > CONFIG_NR_CPUS) {
                printk(KERN_WARNING
                        "%d Processors exceeds NR_CPUS limit of %d\n",