[PATCH] Add irq flag to disable balancing for an interrupt

Add a flag so we can prevent the irq balancing of an interrupt.  Move the
bits, so we have room for more :)

Necessary for the ability to setup clocksources more flexible (e.g.  use the
different HPET channels per CPU)

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index e30ccedad0b9..c76be1110922 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -482,8 +482,8 @@ static void do_irq_balance(void)
                 package_index = CPU_TO_PACKAGEINDEX(i);
                 for (j = 0; j < NR_IRQS; j++) {
                         unsigned long value_now, delta;
-                        /* Is this an active IRQ? */
-                        if (!irq_desc[j].action)
+                        /* Is this an active IRQ or balancing disabled ? */
+                        if (!irq_desc[j].action || irq_balancing_disabled(j))
                                 continue;
                         if ( package_index == i )
                                 IRQ_DELTA(package_index,j) = 0;