[RESEND PATCH 1/2] parisc/CPU hotplug: Add missing call tonotify_cpu_starting()

From: Srivatsa S. Bhat
Date: Tue May 15 2012 - 15:03:18 EST


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@xxxxxxxxxxxxxxxxxx>
Acked-and-Tested-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Acked-and-Tested-by: Tobias Ulmer <tobiasu@xxxxxxxx>
Tested-by: John David Anglin <dave.anglin@xxxxxxxx>
---

arch/parisc/kernel/smp.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 0bb1d63..4dc7b79 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -31,6 +31,7 @@
#include <linux/delay.h>
#include <linux/bitops.h>
#include <linux/ftrace.h>
+#include <linux/cpu.h>

#include <linux/atomic.h>
#include <asm/current.h>
@@ -295,8 +296,13 @@ smp_cpu_init(int cpunum)

printk(KERN_CRIT "CPU#%d already initialized!\n", cpunum);
machine_halt();
- }
+ }
+
+ notify_cpu_starting(cpunum);
+
+ ipi_call_lock();
set_cpu_online(cpunum, true);
+ ipi_call_unlock();

/* Initialise the idle task for this CPU */
atomic_inc(&init_mm.mm_count);

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