xen: Use this_cpu_inc_return

__this_cpu_inc_return reduces code and simplifies code. Cc: Jeremy Fitzhardinge <[email protected]> Acked-by: H. Peter Anvin <[email protected]> Signed-off-by: Christoph Lameter <[email protected]>
chewitt · Dec 17, 2010 · b2e4ae6 · b2e4ae6
1 parent cd85fc5
commit b2e4ae6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
@@ -1109,7 +1109,7 @@ static void __xen_evtchn_do_upcall(void)
 
 		vcpu_info->evtchn_upcall_pending = 0;
 
-		if (__get_cpu_var(xed_nesting_count)++)
+		if (__this_cpu_inc_return(xed_nesting_count) - 1)
 			goto out;
 
 #ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */