The commit 5dfc54e087c15f823ee9b6541d2f0f314e69cbed
("ARM: GIC: avoid routing interrupts to offline CPUs")
prevents routing interrupts to offline CPUs. But in
case of timer on EXYNOS4, the irq_set_affinity() method
is called in percpu_timer_setup() before CPU1 becomes
online. So this patch fixes routing timer interrupt to
offline CPU.
Reported-by: Changhwan Youn <chaos.youn@xxxxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
Hi Russell and all,
I'm not sure it's safe to call set_cpu_online() here...
arch/arm/mach-exynos4/platsmp.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos4/platsmp.c b/arch/arm/mach-exynos4/platsmp.c
index 96cc651..a3346e3 100644
--- a/arch/arm/mach-exynos4/platsmp.c
+++ b/arch/arm/mach-exynos4/platsmp.c
@@ -109,6 +109,8 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
*/
spin_lock(&boot_lock);
spin_unlock(&boot_lock);
+
+ set_cpu_online(cpu, true);
}
int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
--
1.7.1
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