diff options
authorBruno Premont <>2009-07-22 22:22:32 +0200
committerThomas Gleixner <>2009-07-22 23:18:46 +0200
commit61f3826133dc07142935fb5712fc738e19eb5575 (patch)
parent3c3301083e3bea4d14c597106c7b20b4b85fc03d (diff)
genirq: Fix UP compile failure caused by irq_thread_check_affinity
Since genirq: Delegate irq affinity setting to the irq thread (591d2fb02ea80472d846c0b8507007806bdd69cc) compilation with CONFIG_SMP=n fails with following error: /usr/src/linux-2.6/kernel/irq/manage.c: In function 'irq_thread_check_affinity': /usr/src/linux-2.6/kernel/irq/manage.c:475: error: 'struct irq_desc' has no member named 'affinity' make[4]: *** [kernel/irq/manage.o] Error 1 That commit adds a new function irq_thread_check_affinity() which uses struct irq_desc.affinity which is only available for CONFIG_SMP=y. Move that function under #ifdef CONFIG_SMP. [ tglx@brownpaperbag: compile and boot tested on UP and SMP ] Signed-off-by: Bruno Premont <> LKML-Reference: <20090722222232.2eb3e1c4@neptune.home> Signed-off-by: Thomas Gleixner <>
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index f0de36f13a44..61c679db4687 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -451,6 +451,7 @@ static int irq_wait_for_interrupt(struct irqaction *action)
return -1;
+#ifdef CONFIG_SMP
* Check whether we need to change the affinity of the interrupt thread.
@@ -478,6 +479,10 @@ irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action)
set_cpus_allowed_ptr(current, mask);
+static inline void
+irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action) { }
* Interrupt handler thread