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Diffstat (limited to 'arch/mips/kernel/irq.c')
-rw-r--r--arch/mips/kernel/irq.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 8eb5af805964..dc1180a8bfa1 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -25,6 +25,8 @@
#include <linux/atomic.h>
#include <asm/uaccess.h>
+void *irq_stack[NR_CPUS];
+
/*
* 'what should we do if we get a hw irq event on an illegal vector'.
* each architecture has to answer this themselves.
@@ -55,6 +57,15 @@ void __init init_IRQ(void)
irq_set_noprobe(i);
arch_init_irq();
+
+ for_each_possible_cpu(i) {
+ int irq_pages = IRQ_STACK_SIZE / PAGE_SIZE;
+ void *s = (void *)__get_free_pages(GFP_KERNEL, irq_pages);
+
+ irq_stack[i] = s;
+ pr_debug("CPU%d IRQ stack at 0x%p - 0x%p\n", i,
+ irq_stack[i], irq_stack[i] + IRQ_STACK_SIZE);
+ }
}
#ifdef CONFIG_DEBUG_STACKOVERFLOW