OVS_GREP_IFELSE([$KSRC/include/linux/percpu.h], [this_cpu_ptr])
+ OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
+
OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h], [openvswitch_handle_frame_hook],
[OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])