ia64/xen-unstable

changeset 19637:97f2e7c576ab

PV-on-HVM: Define atomic_cmpxchg() for old Linux kernels.

Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue May 26 09:52:59 2009 +0100 (2009-05-26)
parents 0f752c773497
children 9535ef2be909
files unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h
line diff
     1.1 --- a/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h	Tue May 26 09:50:35 2009 +0100
     1.2 +++ b/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h	Tue May 26 09:52:59 2009 +0100
     1.3 @@ -157,4 +157,8 @@ typedef irqreturn_t (*irq_handler_t)(int
     1.4  #define setup_xen_features xen_setup_features
     1.5  #endif
     1.6  
     1.7 +#ifndef atomic_cmpxchg
     1.8 +#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
     1.9  #endif
    1.10 +
    1.11 +#endif