diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 4138b21ae80afeb216da9cf6b7ab1e5ca8247a3a..b427a55ce2ab3a1b420171dcffa7c4d8365e1d12 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -115,6 +115,11 @@ #ifndef __ASSEMBLY__ #include +#ifdef CONFIG_PPC_FSL_BOOK3E +#include +DECLARE_PER_CPU(int, next_tlbcam_idx); +#endif + static inline int mmu_has_feature(unsigned long feature) { return (cur_cpu_spec->mmu_features & feature); diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 6c8e739a12da3f2d598032b65285204a1b19cf74..567a1746ed74225f9c842bf54c907a5ceb40bf3a 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) diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index a3841bb75cbb002d7d5068da1e382deadf1ea664..457dc84154ba7b0bcea693b7c883c90fbf0fd25c 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -353,6 +353,15 @@ void __init mem_init(void) } #endif /* CONFIG_HIGHMEM */ +#if defined(CONFIG_PPC_FSL_BOOK3E) && !defined(CONFIG_SMP) + /* + * If smp is enabled, next_tlbcam_idx is initialized in the cpu up + * functions.... do it here for the non-smp case. + */ + per_cpu(next_tlbcam_idx, smp_processor_id()) = + (mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) - 1; +#endif + printk(KERN_INFO "Memory: %luk/%luk available (%luk kernel code, " "%luk reserved, %luk data, %luk bss, %luk init)\n", nr_free_pages() << (PAGE_SHIFT-10), diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index 3722185d1865eac30a8f7c0ffd7edb624fa906a2..e80ed1093e2fb20ccdb22ced64c02460e08597e3 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -102,6 +102,12 @@ unsigned long linear_map_top; /* Top of linear mapping */ #endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_FSL_BOOK3E +/* next_tlbcam_idx is used to round-robin tlbcam entry assignment */ +DEFINE_PER_CPU(int, next_tlbcam_idx); +EXPORT_PER_CPU_SYMBOL(next_tlbcam_idx); +#endif + /* * Base TLB flushing operations: *