From: Anton Blanchard <anton@samba.org>
Reduce stack overflow check to 4096 bytes free, we were tripping it
too much at 8192.
---
25-akpm/arch/ppc64/kernel/irq.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN arch/ppc64/kernel/irq.c~ppc64-irq_stackwarn_reduction arch/ppc64/kernel/irq.c
--- 25/arch/ppc64/kernel/irq.c~ppc64-irq_stackwarn_reduction 2004-03-14 15:32:31.998438240 -0800
+++ 25-akpm/arch/ppc64/kernel/irq.c 2004-03-14 15:32:32.001437784 -0800
@@ -577,13 +577,13 @@ int do_IRQ(struct pt_regs *regs)
irq_enter();
#ifdef CONFIG_DEBUG_STACKOVERFLOW
- /* Debugging check for stack overflow: is there less than 8KB free? */
+ /* Debugging check for stack overflow: is there less than 4KB free? */
{
long sp;
sp = __get_SP() & (THREAD_SIZE-1);
- if (unlikely(sp < (sizeof(struct thread_info) + 8192))) {
+ if (unlikely(sp < (sizeof(struct thread_info) + 4096))) {
printk("do_IRQ: stack overflow: %ld\n",
sp - sizeof(struct thread_info));
dump_stack();
_