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x86: Use __stop_machine() in text_poke_smp()

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Use __stop_machine() in text_poke_smp() because the caller
must get online_cpus before calling text_poke_smp(), but
stop_machine() do it again. We don't need it.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
LKML-Reference: <20101014031036.4100.83989.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu
2010-10-14 12:10:36 +09:00
committed by Ingo Molnar
parent 087a4eb559
commit 3caa37519c
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/alternative.c
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@ -637,7 +637,8 @@ void *__kprobes text_poke_smp(void *addr, const void *opcode, size_t len)
tpp.len = len; tpp.len = len;
atomic_set(&stop_machine_first, 1); atomic_set(&stop_machine_first, 1);
wrote_text = 0; wrote_text = 0;
stop_machine(stop_machine_text_poke, (void *)&tpp, NULL); /* Use __stop_machine() because the caller already got online_cpus. */
__stop_machine(stop_machine_text_poke, (void *)&tpp, NULL);
return addr; return addr;
} }