Commit-ID: 51111dce2509506d16efd321939895ff7ffe1dc2 Gitweb: http://git.kernel.org/tip/51111dce2509506d16efd321939895ff7ffe1dc2 Author: Michael Ellerman <[email protected]> AuthorDate: Wed, 26 Oct 2016 16:37:55 +1100 Committer: Thomas Gleixner <[email protected]> CommitDate: Wed, 26 Oct 2016 12:02:35 +0200
kernel/smp: Tell the user we're bringing up secondary CPUs Currently we don't print anything before starting to bring up secondary CPUs. This can be confusing if it takes a long time to bring up the secondaries, or if the kernel crashes while doing so and produces no further output. On x86 they work around this by detecting when the first secondary CPU comes up and printing a message (see announce_cpu()). But doing it in smp_init() is simpler and works for all arches. Signed-off-by: Michael Ellerman <[email protected]> Reviewed-by: Borislav Petkov <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> --- kernel/smp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/smp.c b/kernel/smp.c index 4323c5d..77fcdb9 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -555,6 +555,8 @@ void __init smp_init(void) idle_threads_init(); cpuhp_threads_init(); + pr_info("Bringing up secondary CPUs ...\n"); + /* FIXME: This should be done in userspace --RR */ for_each_present_cpu(cpu) { if (num_online_cpus() >= setup_max_cpus)
