From: Peter Zijlstra Date: Wed, 16 Dec 2009 17:04:31 +0000 (+0100) Subject: sched: Mark boot-cpu active before smp_init() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=933b0618d8b2a59c7a0742e43836544e02f1e9bd;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git sched: Mark boot-cpu active before smp_init() A UP machine has 1 active cpu, not having the boot-cpu in the active map when starting the scheduler confuses things. Signed-off-by: Peter Zijlstra Cc: Mike Galbraith LKML-Reference: <20091216170517.423469527@chello.nl> Signed-off-by: Ingo Molnar --- diff --git a/init/main.c b/init/main.c index c3db4a98b369..dac44a9356a5 100644 --- a/init/main.c +++ b/init/main.c @@ -369,12 +369,6 @@ static void __init smp_init(void) { unsigned int cpu; - /* - * Set up the current CPU as possible to migrate to. - * The other ones will be done by cpu_up/cpu_down() - */ - set_cpu_active(smp_processor_id(), true); - /* FIXME: This should be done in userspace --RR */ for_each_present_cpu(cpu) { if (num_online_cpus() >= setup_max_cpus) @@ -486,6 +480,7 @@ static void __init boot_cpu_init(void) int cpu = smp_processor_id(); /* Mark the boot cpu "present", "online" etc for SMP and UP case */ set_cpu_online(cpu, true); + set_cpu_active(cpu, true); set_cpu_present(cpu, true); set_cpu_possible(cpu, true); }