ARC: Mark secondary cpu online only after all HW setup is done
In SMP setup, master loops for each_present_cpu calling cpu_up().
For ARC it returns as soon as new cpu's status becomes online,
However secondary may still do HW initializing,
machine or platform hook level.
So turn secondary online only after all HW setup is done.
Signed-off-by: Noam Camus <noamc@ezchip.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index 6b18134..f183cc6 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -126,11 +126,6 @@
current->active_mm = mm;
cpumask_set_cpu(cpu, mm_cpumask(mm));
- notify_cpu_starting(cpu);
- set_cpu_online(cpu, true);
-
- pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
-
/* Some SMP H/w setup - for each cpu */
if (plat_smp_ops.init_per_cpu)
plat_smp_ops.init_per_cpu(cpu);
@@ -138,6 +133,11 @@
if (machine_desc->init_per_cpu)
machine_desc->init_per_cpu(cpu);
+ notify_cpu_starting(cpu);
+ set_cpu_online(cpu, true);
+
+ pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
+
local_irq_enable();
preempt_disable();
cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);