From: Li Zhong Date: Thu, 24 Jan 2013 21:51:13 +0000 (+0000) Subject: powerpc: Avoid debug_smp_processor_id() check in SHARED_PROCESSOR X-Git-Tag: v3.9-rc1~100^2~38 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=94c95cfbfe784eca5f4b96955e41bda1318605bc;p=profile%2Fivi%2Fkernel-x86-ivi.git powerpc: Avoid debug_smp_processor_id() check in SHARED_PROCESSOR Use local_paca directly in macro SHARED_PROCESSOR, as all processors have the same value for the field shared_proc, so we don't need care racy here. Reported-by: Paul E. McKenney Signed-off-by: Li Zhong Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index 7124fc0..5b23f91 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -96,7 +96,7 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock) #if defined(CONFIG_PPC_SPLPAR) /* We only yield to the hypervisor if we are in shared processor mode */ -#define SHARED_PROCESSOR (get_lppaca()->shared_proc) +#define SHARED_PROCESSOR (local_paca->lppaca_ptr->shared_proc) extern void __spin_yield(arch_spinlock_t *lock); extern void __rw_yield(arch_rwlock_t *lock); #else /* SPLPAR */