x86: Introduce text_poke_smp_batch() for batch-code modifying
authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Fri, 3 Dec 2010 09:54:22 +0000 (18:54 +0900)
committerIngo Molnar <mingo@elte.hu>
Mon, 6 Dec 2010 16:59:31 +0000 (17:59 +0100)
commit7deb18dcf0478940ac979de002db1ed8ba6531dc
tree6fb52200daf5d02cb5aa59c46b856d25c44ea037
parent0490cd1f9d99569d3bd64e17adc88db06a5007be
x86: Introduce text_poke_smp_batch() for batch-code modifying

Introduce text_poke_smp_batch(). This function modifies several
text areas with one stop_machine() on SMP. Because calling
stop_machine() is heavy task, it is better to aggregate
text_poke requests.

( Note: I've talked with Rusty about this interface, and
  he would not like to expand stop_machine() interface, since
  it is not for generic use. )

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: 2nddept-manager@sdl.hitachi.co.jp
LKML-Reference: <20101203095422.2961.51217.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/include/asm/alternative.h
arch/x86/kernel/alternative.c