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xen: Use this_cpu_inc_return 

__this_cpu_inc_return reduces code and simplifies code.

Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
hifive-unleashed-5.1
Christoph Lameter 2010-12-06 11:40:07 -06:00 committed by Tejun Heo
parent cd85fc58cd
commit b2e4ae6975
1 changed files with 1 additions and 1 deletions
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2
drivers/xen/events.c
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@ -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. */