From ae1b3d51c89a96c641111e2c103557592577cf51 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 15 Jul 2005 15:44:02 +0000 Subject: [PATCH] Make sure that the processor is actually online or die spectacularly. Signed-off-by: Ralf Baechle --- arch/mips/kernel/smp.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 25762917e822..798fce509398 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -142,6 +142,11 @@ int smp_call_function (void (*func) (void *info), void *info, int retry, int i, cpus = num_online_cpus() - 1; int cpu = smp_processor_id(); + /* + * Can die spectacularly if this CPU isn't yet marked online + */ + BUG_ON(!cpu_online(cpu)); + if (!cpus) return 0; -- 2.20.1