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Date: Thu, 28 Oct 2010 11:20:27 -0400 From: Jason Baron <jbaron@...hat.com> To: masami.hiramatsu.pt@...achi.com Cc: mathieu.desnoyers@...ymtl.ca, hpa@...or.com, tglx@...utronix.de, andi@...stfloor.org, fweisbec@...il.com, rostedt@...dmis.org, mingo@...e.hu, linux-kernel@...r.kernel.org Subject: [PATCH] call stop_machine_text_poke() on all cpus Currently, text_poke_smp() passes a NULL as the third argument to __stop_machine(), which will only run stop_machine_text_poke() on 1 cpu. Change NULL -> cpu_online_mask, as stop_machine_text_poke() is intended to be run on all cpus. I actually didn't notice any problems with stop_machine_text_poke() only being called on 1 cpu, but found this via code inspection. Signed-off-by: Jason Baron <jbaron@...hat.com> --- arch/x86/kernel/alternative.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 9f39a1c..3c3f26f 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -705,6 +705,6 @@ void *__kprobes text_poke_smp(void *addr, const void *opcode, size_t len) atomic_set(&stop_machine_first, 1); wrote_text = 0; /* Use __stop_machine() because the caller already got online_cpus. */ - __stop_machine(stop_machine_text_poke, (void *)&tpp, NULL); + __stop_machine(stop_machine_text_poke, (void *)&tpp, cpu_online_mask); return addr; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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