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this_cpu_inc() is IRQ safe and faster than local_bh_disable()/__this_cpu_inc()/local_bh_enable(), at least on x86. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Christoph Lameter <cl@linux.com> Cc: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>