From: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Date: Thu, 22 Mar 2012 11:28:25 +0000 (+0530)
Subject: hexagon/CPU hotplug: Add missing call to notify_cpu_starting()
X-Git-Tag: Ubuntu-5.0.0-8.9~16238^2~1
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=57f27cca7ab59cec05adc85cef97e9b4f7d28d78;p=mirror_ubuntu-disco-kernel.git

hexagon/CPU hotplug: Add missing call to notify_cpu_starting()

The scheduler depends on receiving the CPU_STARTING notification, without
which we end up into a lot of trouble. So add the missing call to
notify_cpu_starting() in the bringup code.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
---

diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c
index 9b44a9e2d05a..0672463df20c 100644
--- a/arch/hexagon/kernel/smp.c
+++ b/arch/hexagon/kernel/smp.c
@@ -177,7 +177,12 @@ void __cpuinit start_secondary(void)
 
 	printk(KERN_INFO "%s cpu %d\n", __func__, current_thread_info()->cpu);
 
+	notify_cpu_starting(cpu);
+
+	ipi_call_lock();
 	set_cpu_online(cpu, true);
+	ipi_call_unlock();
+
 	local_irq_enable();
 
 	cpu_idle();