ARC: make plat_smp_ops weak to allow over-rides
authorVineet Gupta <vgupta@synopsys.com>
Thu, 4 Jun 2015 12:07:23 +0000 (17:37 +0530)
committerVineet Gupta <vgupta@synopsys.com>
Mon, 22 Jun 2015 08:36:56 +0000 (14:06 +0530)
This allows platforms to provide their own cpu wakeup routines
as well as IPI send / clear backends, while allowing a SMP kernel w/o
any such backend to build/boot

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
arch/arc/kernel/smp.c

index ee2982d..d07cb53 100644 (file)
@@ -31,7 +31,7 @@ arch_spinlock_t smp_atomic_ops_lock = __ARCH_SPIN_LOCK_UNLOCKED;
 arch_spinlock_t smp_bitops_lock = __ARCH_SPIN_LOCK_UNLOCKED;
 #endif
 
-struct plat_smp_ops  plat_smp_ops;
+struct plat_smp_ops  __weak plat_smp_ops;
 
 /* XXX: per cpu ? Only needed once in early seconday boot */
 struct task_struct *secondary_idle_tsk;