Hello.
Adam Jiang wrote:
Add stackoverflow detection to mips arch
[...]
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index c6345f5..75c584d 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -151,6 +151,25 @@ void __init init_IRQ(void)
#endif
}
+#ifdef CONFIG_DEBUG_STACKOVERFLOW
+static inline void check_stack_overflow(void)
+{
+ long sp;
+
+ asm volatile("move %0, $sp" : "=r" (sp));
+ sp = sp & (THREAD_SIZE-1);
+
+ /* check for stack overflow: is there less than 2KB free? */
+ if (unlikely(sp < (sizeof(struct thread_info) + 2048))) {
+ printk("do_IRQ: stack overflow: %ld\n",
+ sp - sizeof(struct thread_info));
+ dump_stack();
+ }
+}
+#else
+static inline void check_stack_overflow(void)
You didn't even try to compile with the option disabled -- you've missed {}.
+#endif
+
/*
* do_IRQ handles all normal device IRQ's (the special
* SMP cross-CPU interrupts have their own specific
WBR, Sergei
