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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-12-16 18:04:31 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-04-01 15:58:15 -0700 |
| commit | 8c2b12e12010928b6c5dd06447eccb99b0629515 (patch) | |
| tree | c3e9a9ab07a9f472684c433489a35e85593becb3 | |
| parent | 81aa42727eba53401948ec04b4825b8ef30d6fdc (diff) | |
| download | lwn-8c2b12e12010928b6c5dd06447eccb99b0629515.tar.gz lwn-8c2b12e12010928b6c5dd06447eccb99b0629515.zip | |
sched: Mark boot-cpu active before smp_init()
commit 933b0618d8b2a59c7a0742e43836544e02f1e9bd upstream.
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 <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20091216170517.423469527@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | init/main.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/init/main.c b/init/main.c index 4051d75dd2d6..4be7de2a78b6 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); } |