diff -r 2d65c2f76d7b -r 947f0dc9f7a8 kernel/eka/include/nkern/nk_cpu.h
--- a/kernel/eka/include/nkern/nk_cpu.h	Tue Feb 02 01:24:03 2010 +0200
+++ b/kernel/eka/include/nkern/nk_cpu.h	Fri Apr 16 16:24:37 2010 +0300
@@ -669,6 +669,18 @@
 
 #define	__chill()
 
+#ifdef 	__CPU_ARM_HAS_WFE_SEV
+
+extern "C" void __arm_wfe();
+extern "C" void __arm_sev();
+
+#define	__snooze()	__arm_wfe()
+#define	__holler()	__arm_sev()
+#else
+#define	__snooze()
+#define	__holler()
+#endif
+
 #if defined(__SMP__) && !defined(__CPU_ARM_HAS_LDREX_STREX_V6K)
 #error SMP not allowed without v6K
 #endif
@@ -696,6 +708,9 @@
 #error Unknown x86 compiler
 #endif
 
+#define	__snooze()	__chill()
+#define	__holler()
+
 #if defined(__cplusplus)
 extern "C" {
 #endif