x86/jump_label: expect default_nop if static_key gets enabled on boot-up
authorHannes Frederic Sowa <hannes@stressinduktion.org>
Sat, 19 Oct 2013 19:48:54 +0000 (21:48 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sat, 19 Oct 2013 23:45:35 +0000 (19:45 -0400)
commita8fab0744585c1ab61009bfc1a1958f28e1c864f
treefee8d9ecb58cbcb46465cf2f97c542cd70a85687
parentc4b2c0c5f647aa1093e8f9097a30c17ce0f94d4d
x86/jump_label: expect default_nop if static_key gets enabled on boot-up

net_get_random_once(intrduced in the next patch) uses static_keys in
a way that they get enabled on boot-up instead of replaced with an
ideal_nop. So check for default_nop on initial enabling.

Other architectures don't check for this.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: x86@kernel.org
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/x86/kernel/jump_label.c