Re: [PATCH net-next 2/2] net: initialize hashrnd in flow_dissector with net_get_random_once

On Wed, 2013-10-23 at 13:12 +0200, Hannes Frederic Sowa wrote:

We also can defer the initialization of hashrnd in flow_dissector
to its first use. Since net_get_random_once is irqsave now we don't
have to audit the call paths if one of this functions get called by an
interrupt handler.

Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <redacted>
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This really works well if CONFIG_JUMP_LABEL=y

I am afraid some arches do not really have this.