ia64/xen-unstable

changeset 18365:5bb2700e773a

[IA64] fix stack unwinder.

The stack unwinder can be called in interrupt context. On the other
hand xmalloc() can't be called in interrupt context.
Don't call xmalloc() if in the interrupt context.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Aug 25 19:04:37 2008 +0900 (2008-08-25)
parents 5a61dba2cf0a
children efee1e0f2e08
files xen/arch/ia64/linux-xen/unwind.c
line diff
     1.1 --- a/xen/arch/ia64/linux-xen/unwind.c	Mon Aug 25 19:04:37 2008 +0900
     1.2 +++ b/xen/arch/ia64/linux-xen/unwind.c	Mon Aug 25 19:04:37 2008 +0900
     1.3 @@ -91,9 +91,9 @@
     1.4  #endif
     1.5  
     1.6  #ifdef XEN
     1.7 -#define alloc_reg_state()	xmalloc(struct unw_reg_state)
     1.8 +#define alloc_reg_state()	({in_irq()? NULL: xmalloc(struct unw_reg_state);})
     1.9  #define free_reg_state(usr)	xfree(usr)
    1.10 -#define alloc_labeled_state()	xmalloc(struct unw_labeled_state)
    1.11 +#define alloc_labeled_state()	({in_irq()? NULL: xmalloc(struct unw_labeled_state);})
    1.12  #define free_labeled_state(usr)	xfree(usr)
    1.13  #else
    1.14  #define alloc_reg_state()	kmalloc(sizeof(struct unw_reg_state), GFP_ATOMIC)