parisc: implement irq stacks - part 2 (v2)

This patch fixes few build issues which were introduced with the last
irq stack patch, e.g. the combination of stack overflow check and irq
stack.

Furthermore we now do proper locking and change the irq bh handler
to use the irq stack as well.

In /proc/interrupts one now can monitor how huge the irq stack has grown
and how often it was preferred over the kernel stack.

IRQ stacks are now enabled by default just to make sure that we not
overflow the kernel stack by accident.

Signed-off-by: Helge Deller <deller@gmx.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index ce939ac8622b..1c965642068b 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -1069,7 +1069,7 @@ void flush_tlb_all(void)
 {
         int do_recycle;
 
-        inc_irq_stat(irq_tlb_count);
+        __inc_irq_stat(irq_tlb_count);
         do_recycle = 0;
         spin_lock(&sid_lock);
         if (dirty_space_ids > RECYCLE_THRESHOLD) {
@@ -1090,7 +1090,7 @@ void flush_tlb_all(void)
 #else
 void flush_tlb_all(void)
 {
-        inc_irq_stat(irq_tlb_count);
+        __inc_irq_stat(irq_tlb_count);
         spin_lock(&sid_lock);
         flush_tlb_all_local(NULL);
         recycle_sids();