powerpc: Create next_tlbcam_idx percpu variable for FSL_BOOKE

This is used to round-robin TLBCAM entries.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 6c8e739a12da..567a1746ed74 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -305,6 +305,10 @@ struct thread_info *current_set[NR_CPUS];
 static void __devinit smp_store_cpu_info(int id)
 {
         per_cpu(cpu_pvr, id) = mfspr(SPRN_PVR);
+#ifdef CONFIG_PPC_FSL_BOOK3E
+        per_cpu(next_tlbcam_idx, id)
+                = (mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) - 1;
+#endif
 }
 
 void __init smp_prepare_cpus(unsigned int max_cpus)