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powerpc: Fix irq distribution

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setting CONFIG_IRQ_ALL_CPUS distributes IRQs to CPUs only when
the number of online CPUs equals NR_CPUS.  See commit
280ff97494e0fef4124bee5c52e39b23a18dd283 "sparc64: fix and
optimize irq distribution" for more details.

Using the online mask fixes IRQ-to-CPU distribution on systems
that boot with less than NR_CPUS.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kim Phillips 2012-05-17 15:11:45 +00:00 committed by Benjamin Herrenschmidt
parent 6749ef0b8b
commit 2074b1d9d5
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kernel/irq.c
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@ -587,7 +587,7 @@ int irq_choose_cpu(const struct cpumask *mask)
{
int cpuid;
if (cpumask_equal(mask, cpu_all_mask)) {
if (cpumask_equal(mask, cpu_online_mask)) {
static int irq_rover;
static DEFINE_RAW_SPINLOCK(irq_rover_lock);
unsigned long flags;