[PATCH v2 4/5] powerpc: use lazy mm refcount helper functions

From: Nicholas Piggin
Date: Mon Dec 14 2020 - 02:03:52 EST


Use _lazy_tlb functions for lazy mm refcounting in powerpc, to prepare
to move to MMU_LAZY_TLB_SHOOTDOWN.

Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>
---
arch/powerpc/kernel/smp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 8c2857cbd960..93c0eaa6f4bf 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1395,7 +1395,7 @@ void start_secondary(void *unused)
{
unsigned int cpu = raw_smp_processor_id();

- mmgrab(&init_mm);
+ mmgrab_lazy_tlb(&init_mm);
current->active_mm = &init_mm;

smp_store_cpu_info(cpu);
--
2.23.0