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x86, alternative: Call stop_machine_text_poke() on all cpus

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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 <[email protected]>
LKML-Reference: <[email protected]>
Acked-by: Mathieu Desnoyers <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
This commit is contained in:
Jason Baron 2010-10-28 11:20:27 -04:00 • committed by H. Peter Anvin
commit 404ba5d7bb
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/alternative.c
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@ -638,7 +638,7 @@ 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;
}