path: root/kernel/smp.c
diff options
authorMichael Ellerman <mpe@ellerman.id.au>2016-10-26 16:37:55 +1100
committerThomas Gleixner <tglx@linutronix.de>2016-10-26 12:02:35 +0200
commit51111dce2509506d16efd321939895ff7ffe1dc2 (patch)
treec878364c670acfa7bae2e488f2a29e044987d159 /kernel/smp.c
parentkernel/smp: Make the SMP boot message common on all arches (diff)
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 <mpe@ellerman.id.au> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: akpm@osdl.org Cc: jgross@suse.com Cc: ak@linux.intel.com Cc: tim.c.chen@linux.intel.com Cc: len.brown@intel.com Cc: peterz@infradead.org Cc: richard@nod.at Cc: jolsa@redhat.com Cc: boris.ostrovsky@oracle.com Cc: mgorman@techsingularity.net Link: http://lkml.kernel.org/r/1477460275-8266-3-git-send-email-mpe@ellerman.id.au Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to '')
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/smp.c b/kernel/smp.c
index 4323c5db7d26..77fcdb9f2775 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -555,6 +555,8 @@ void __init smp_init(void)
+ 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)