[PATCH] x86: hot plug CPU to support physical add of new processors

The patch allows physical bring-up of new processors (not initially present
in the configuration) from facilities such as driver/utility implemented on
a platform.  The actual method of making processors available is up to the
platform implementation.

Signed-off-by: Natalie Protasevich <Natalie.Protasevich@unisys.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Zwane Mwaikambo <zwane@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index ce66dcc26d90..1a201a932865 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -218,7 +218,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
         if (i == 0) {
                 seq_printf(p, "           ");
-                for_each_cpu(j)
+                for_each_online_cpu(j)
                         seq_printf(p, "CPU%d       ",j);
                 seq_putc(p, '\n');
         }
@@ -232,7 +232,7 @@ int show_interrupts(struct seq_file *p, void *v)
 #ifndef CONFIG_SMP
                 seq_printf(p, "%10u ", kstat_irqs(i));
 #else
-                for_each_cpu(j)
+                for_each_online_cpu(j)
                         seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
                 seq_printf(p, " %14s", irq_desc[i].handler->typename);
@@ -246,12 +246,12 @@ skip:
                 spin_unlock_irqrestore(&irq_desc[i].lock, flags);
         } else if (i == NR_IRQS) {
                 seq_printf(p, "NMI: ");
-                for_each_cpu(j)
+                for_each_online_cpu(j)
                         seq_printf(p, "%10u ", nmi_count(j));
                 seq_putc(p, '\n');
 #ifdef CONFIG_X86_LOCAL_APIC
                 seq_printf(p, "LOC: ");
-                for_each_cpu(j)
+                for_each_online_cpu(j)
                         seq_printf(p, "%10u ",
                                 per_cpu(irq_stat,j).apic_timer_irqs);
                 seq_putc(p, '\n');