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authorKim Phillips <kim.phillips@freescale.com>2012-05-17 19:11:45 +0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-05-22 08:38:26 +0400
commit2074b1d9d53ae696dd3f49482bad43254f40f01d (patch)
tree8e1ac0d5264e0d5cbdadcec5989dd4c258ea90b0
parent6749ef0b8b1f8aa72cc93c874edef39f4c0533ba (diff)
downloadlinux-2074b1d9d53ae696dd3f49482bad43254f40f01d.tar.xz
powerpc: Fix irq distribution
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>
-rw-r--r--arch/powerpc/kernel/irq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 641da9e868ce..7835a5e1ea5f 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -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;